/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/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:48:45,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:48:45,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:48:45,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:48:45,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:48:45,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:48:45,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:48:45,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:48:45,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:48:45,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:48:45,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:48:45,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:48:45,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:48:45,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:48:45,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:48:45,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:48:45,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:48:45,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:48:45,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:48:45,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:48:45,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:48:45,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:48:45,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:48:45,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:48:45,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:48:45,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:48:45,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:48:45,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:48:45,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:48:45,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:48:45,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:48:45,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:48:45,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:48:45,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:48:45,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:48:45,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:48:45,967 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 [2020-12-17 23:48:46,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:48:46,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:48:46,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:48:46,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:48:46,018 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:48:46,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:48:46,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:48:46,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:48:46,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:48:46,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:48:46,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:48:46,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:48:46,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:48:46,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:48:46,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:48:46,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:48:46,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:48:46,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:48:46,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:48:46,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:48:46,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:48:46,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:48:46,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:48:46,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:48:46,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:48:46,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:48:46,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:48:46,024 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:48:46,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:48:46,024 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:48:46,024 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:48:46,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:48:46,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:48:46,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:48:46,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:48:46,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:48:46,429 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:48:46,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-12-17 23:48:46,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f1063aa/bb1f15cef1a64a3c99d8d6363475e0ba/FLAGc62646bde [2020-12-17 23:48:47,360 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:48:47,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-12-17 23:48:47,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f1063aa/bb1f15cef1a64a3c99d8d6363475e0ba/FLAGc62646bde [2020-12-17 23:48:47,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f1063aa/bb1f15cef1a64a3c99d8d6363475e0ba [2020-12-17 23:48:47,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:48:47,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:48:47,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:48:47,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:48:47,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:48:47,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:48:47" (1/1) ... [2020-12-17 23:48:47,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631f1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:47, skipping insertion in model container [2020-12-17 23:48:47,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:48:47" (1/1) ... [2020-12-17 23:48:47,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:48:47,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:48:48,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:48:48,083 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:48:48,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:48:48,254 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:48:48,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48 WrapperNode [2020-12-17 23:48:48,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:48:48,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:48:48,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:48:48,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:48:48,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:48:48,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:48:48,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:48:48,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:48:48,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... [2020-12-17 23:48:48,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:48:48,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:48:48,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:48:48,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:48:48,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:48:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:48:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:48:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:48:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:48:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:48:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:48:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:48:48,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:48:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:48:48,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:48:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:48:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:48:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:48:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:48:48,451 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:48:48,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:48:48,912 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:48:48,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:48:48 BoogieIcfgContainer [2020-12-17 23:48:48,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:48:48,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:48:48,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:48:48,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:48:48,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:48:47" (1/3) ... [2020-12-17 23:48:48,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa8056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:48:48, skipping insertion in model container [2020-12-17 23:48:48,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:48:48" (2/3) ... [2020-12-17 23:48:48,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa8056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:48:48, skipping insertion in model container [2020-12-17 23:48:48,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:48:48" (3/3) ... [2020-12-17 23:48:48,929 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-12-17 23:48:48,946 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:48:48,946 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:48:48,950 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:48:48,951 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:48:49,003 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,004 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,004 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,004 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,006 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,006 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,009 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,009 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,009 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,010 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,017 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,017 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,029 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,030 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:48:49,052 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:48:49,067 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:48:49,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:48:49,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:48:49,105 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:48:49,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:48:49,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:48:49,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:48:49,106 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:48:49,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:48:49,122 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-12-17 23:48:50,203 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-12-17 23:48:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-12-17 23:48:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-17 23:48:50,301 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:50,302 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] [2020-12-17 23:48:50,302 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:50,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2020-12-17 23:48:50,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:50,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213416058] [2020-12-17 23:48:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:50,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213416058] [2020-12-17 23:48:50,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:50,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:50,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741006749] [2020-12-17 23:48:50,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:50,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:50,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:50,848 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-12-17 23:48:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:51,292 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2020-12-17 23:48:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:51,294 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 [2020-12-17 23:48:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:51,296 INFO L763 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 [2020-12-17 23:48:51,297 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 42463 transitions. Word has length 41 [2020-12-17 23:48:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:51,299 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 42463 transitions. [2020-12-17 23:48:51,299 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) [2020-12-17 23:48:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 42463 transitions. [2020-12-17 23:48:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 23:48:51,318 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:51,318 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] [2020-12-17 23:48:51,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:48:51,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1918466709, now seen corresponding path program 1 times [2020-12-17 23:48:51,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:51,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527639360] [2020-12-17 23:48:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:51,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527639360] [2020-12-17 23:48:51,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:51,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:51,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236780582] [2020-12-17 23:48:51,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:51,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:51,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:51,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:51,490 INFO L87 Difference]: Start difference. First operand 12199 states and 42463 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) [2020-12-17 23:48:51,705 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-12-17 23:48:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:52,029 INFO L93 Difference]: Finished difference Result 14747 states and 51045 transitions. [2020-12-17 23:48:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:52,030 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 [2020-12-17 23:48:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:52,031 INFO L763 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 [2020-12-17 23:48:52,032 INFO L78 Accepts]: Start accepts. Automaton has 14747 states and 51045 transitions. Word has length 43 [2020-12-17 23:48:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:52,032 INFO L481 AbstractCegarLoop]: Abstraction has 14747 states and 51045 transitions. [2020-12-17 23:48:52,033 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) [2020-12-17 23:48:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 14747 states and 51045 transitions. [2020-12-17 23:48:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-17 23:48:52,056 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:52,056 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] [2020-12-17 23:48:52,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:48:52,056 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:52,057 INFO L82 PathProgramCache]: Analyzing trace with hash -795070177, now seen corresponding path program 1 times [2020-12-17 23:48:52,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:52,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559322346] [2020-12-17 23:48:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:52,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559322346] [2020-12-17 23:48:52,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:52,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:52,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991870069] [2020-12-17 23:48:52,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:52,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:52,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:52,283 INFO L87 Difference]: Start difference. First operand 14747 states and 51045 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2020-12-17 23:48:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:52,722 INFO L93 Difference]: Finished difference Result 22363 states and 76879 transitions. [2020-12-17 23:48:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:52,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 [2020-12-17 23:48:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:52,725 INFO L763 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 [2020-12-17 23:48:52,725 INFO L78 Accepts]: Start accepts. Automaton has 22363 states and 76879 transitions. Word has length 44 [2020-12-17 23:48:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:52,726 INFO L481 AbstractCegarLoop]: Abstraction has 22363 states and 76879 transitions. [2020-12-17 23:48:52,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2020-12-17 23:48:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 22363 states and 76879 transitions. [2020-12-17 23:48:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 23:48:52,835 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:52,835 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] [2020-12-17 23:48:52,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:48:52,835 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2081473022, now seen corresponding path program 1 times [2020-12-17 23:48:52,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:52,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429804497] [2020-12-17 23:48:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:53,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429804497] [2020-12-17 23:48:53,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:53,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:53,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225338711] [2020-12-17 23:48:53,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:53,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:53,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:53,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:53,005 INFO L87 Difference]: Start difference. First operand 22363 states and 76879 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) [2020-12-17 23:48:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:53,487 INFO L93 Difference]: Finished difference Result 37563 states and 128367 transitions. [2020-12-17 23:48:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:53,488 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 [2020-12-17 23:48:53,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:53,489 INFO L763 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 [2020-12-17 23:48:53,489 INFO L78 Accepts]: Start accepts. Automaton has 37563 states and 128367 transitions. Word has length 46 [2020-12-17 23:48:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:53,490 INFO L481 AbstractCegarLoop]: Abstraction has 37563 states and 128367 transitions. [2020-12-17 23:48:53,490 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) [2020-12-17 23:48:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37563 states and 128367 transitions. [2020-12-17 23:48:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:48:53,620 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:53,621 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] [2020-12-17 23:48:53,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:48:53,621 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash -306051688, now seen corresponding path program 1 times [2020-12-17 23:48:53,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:53,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049471902] [2020-12-17 23:48:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:53,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049471902] [2020-12-17 23:48:53,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:53,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:53,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056682905] [2020-12-17 23:48:53,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:53,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:53,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:53,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:53,749 INFO L87 Difference]: Start difference. First operand 37563 states and 128367 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) [2020-12-17 23:48:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:54,472 INFO L93 Difference]: Finished difference Result 61275 states and 206511 transitions. [2020-12-17 23:48:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:48:54,473 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 [2020-12-17 23:48:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:54,474 INFO L763 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 [2020-12-17 23:48:54,474 INFO L78 Accepts]: Start accepts. Automaton has 61275 states and 206511 transitions. Word has length 47 [2020-12-17 23:48:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:54,474 INFO L481 AbstractCegarLoop]: Abstraction has 61275 states and 206511 transitions. [2020-12-17 23:48:54,475 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) [2020-12-17 23:48:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 61275 states and 206511 transitions. [2020-12-17 23:48:54,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 23:48:54,565 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:54,571 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] [2020-12-17 23:48:54,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:48:54,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:54,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1816760195, now seen corresponding path program 1 times [2020-12-17 23:48:54,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:54,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478232698] [2020-12-17 23:48:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:54,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478232698] [2020-12-17 23:48:54,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:54,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:48:54,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261737655] [2020-12-17 23:48:54,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:48:54,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:54,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:48:54,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:48:54,961 INFO L87 Difference]: Start difference. First operand 61275 states and 206511 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2020-12-17 23:48:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:55,333 INFO L93 Difference]: Finished difference Result 34272 states and 112311 transitions. [2020-12-17 23:48:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:48:55,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2020-12-17 23:48:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:55,335 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:55,335 INFO L78 Accepts]: Start accepts. Automaton has 34272 states and 112311 transitions. Word has length 48 [2020-12-17 23:48:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:55,335 INFO L481 AbstractCegarLoop]: Abstraction has 34272 states and 112311 transitions. [2020-12-17 23:48:55,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2020-12-17 23:48:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 34272 states and 112311 transitions. [2020-12-17 23:48:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-17 23:48:55,375 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:55,375 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] [2020-12-17 23:48:55,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:48:55,376 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1635595998, now seen corresponding path program 1 times [2020-12-17 23:48:55,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:55,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177064930] [2020-12-17 23:48:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177064930] [2020-12-17 23:48:55,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:55,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:55,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597118323] [2020-12-17 23:48:55,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:55,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:55,575 INFO L87 Difference]: Start difference. First operand 34272 states and 112311 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2020-12-17 23:48:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:55,894 INFO L93 Difference]: Finished difference Result 14643 states and 46746 transitions. [2020-12-17 23:48:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:48:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2020-12-17 23:48:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:55,896 INFO L763 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 [2020-12-17 23:48:55,896 INFO L78 Accepts]: Start accepts. Automaton has 14643 states and 46746 transitions. Word has length 49 [2020-12-17 23:48:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:55,897 INFO L481 AbstractCegarLoop]: Abstraction has 14643 states and 46746 transitions. [2020-12-17 23:48:55,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2020-12-17 23:48:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 14643 states and 46746 transitions. [2020-12-17 23:48:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 23:48:55,922 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:55,923 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] [2020-12-17 23:48:55,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:48:55,923 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:55,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:55,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1738964541, now seen corresponding path program 1 times [2020-12-17 23:48:55,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:55,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809008259] [2020-12-17 23:48:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:56,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809008259] [2020-12-17 23:48:56,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:56,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:48:56,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889092905] [2020-12-17 23:48:56,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:48:56,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:56,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:48:56,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:48:56,105 INFO L87 Difference]: Start difference. First operand 14643 states and 46746 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2020-12-17 23:48:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:56,605 INFO L93 Difference]: Finished difference Result 7992 states and 25638 transitions. [2020-12-17 23:48:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:48:56,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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 [2020-12-17 23:48:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:56,607 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:48:56,607 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 25638 transitions. Word has length 51 [2020-12-17 23:48:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:56,607 INFO L481 AbstractCegarLoop]: Abstraction has 7992 states and 25638 transitions. [2020-12-17 23:48:56,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2020-12-17 23:48:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 25638 transitions. [2020-12-17 23:48:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 23:48:56,619 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:56,619 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] [2020-12-17 23:48:56,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:48:56,619 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:56,620 INFO L82 PathProgramCache]: Analyzing trace with hash -889143118, now seen corresponding path program 1 times [2020-12-17 23:48:56,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:56,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060871234] [2020-12-17 23:48:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:56,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060871234] [2020-12-17 23:48:56,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:56,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:56,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138130729] [2020-12-17 23:48:56,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:56,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:56,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:56,713 INFO L87 Difference]: Start difference. First operand 7992 states and 25638 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-12-17 23:48:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:56,865 INFO L93 Difference]: Finished difference Result 11898 states and 37570 transitions. [2020-12-17 23:48:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:48:56,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-12-17 23:48:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:56,866 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:56,866 INFO L78 Accepts]: Start accepts. Automaton has 11898 states and 37570 transitions. Word has length 53 [2020-12-17 23:48:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:56,867 INFO L481 AbstractCegarLoop]: Abstraction has 11898 states and 37570 transitions. [2020-12-17 23:48:56,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-12-17 23:48:56,867 INFO L276 IsEmpty]: Start isEmpty. Operand 11898 states and 37570 transitions. [2020-12-17 23:48:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 23:48:56,882 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:56,882 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] [2020-12-17 23:48:56,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-17 23:48:56,882 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:56,883 INFO L82 PathProgramCache]: Analyzing trace with hash 388446026, now seen corresponding path program 2 times [2020-12-17 23:48:56,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:56,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589088858] [2020-12-17 23:48:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:56,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589088858] [2020-12-17 23:48:56,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:56,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:56,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38626637] [2020-12-17 23:48:56,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:56,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:56,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:56,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:56,985 INFO L87 Difference]: Start difference. First operand 11898 states and 37570 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-12-17 23:48:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:57,276 INFO L93 Difference]: Finished difference Result 16413 states and 51529 transitions. [2020-12-17 23:48:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-17 23:48:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-12-17 23:48:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:57,278 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:48:57,278 INFO L78 Accepts]: Start accepts. Automaton has 16413 states and 51529 transitions. Word has length 53 [2020-12-17 23:48:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:57,278 INFO L481 AbstractCegarLoop]: Abstraction has 16413 states and 51529 transitions. [2020-12-17 23:48:57,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-12-17 23:48:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 16413 states and 51529 transitions. [2020-12-17 23:48:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 23:48:57,304 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:48:57,304 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] [2020-12-17 23:48:57,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-17 23:48:57,304 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:48:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:48:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1880557810, now seen corresponding path program 3 times [2020-12-17 23:48:57,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:48:57,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027254536] [2020-12-17 23:48:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:48:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:48:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:48:57,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027254536] [2020-12-17 23:48:57,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:48:57,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:48:57,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725489572] [2020-12-17 23:48:57,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:48:57,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:48:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:48:57,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:48:57,473 INFO L87 Difference]: Start difference. First operand 16413 states and 51529 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-12-17 23:48:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:48:57,672 INFO L93 Difference]: Finished difference Result 26898 states and 83998 transitions. [2020-12-17 23:48:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:48:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-12-17 23:48:57,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:48:57,673 INFO L763 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 [2020-12-17 23:48:57,673 INFO L78 Accepts]: Start accepts. Automaton has 26898 states and 83998 transitions. Word has length 53 [2020-12-17 23:48:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:48:57,673 INFO L481 AbstractCegarLoop]: Abstraction has 26898 states and 83998 transitions. [2020-12-17 23:48:57,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-12-17 23:48:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 26898 states and 83998 transitions. [2020-12-17 23:48:57,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:48:57,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-17 23:48:57,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:48:57 BasicIcfg [2020-12-17 23:48:57,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:48:57,725 INFO L168 Benchmark]: Toolchain (without parser) took 10149.96 ms. Allocated memory was 302.0 MB in the beginning and 3.8 GB in the end (delta: 3.5 GB). Free memory was 277.4 MB in the beginning and 3.2 GB in the end (delta: -3.0 GB). Peak memory consumption was 535.7 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:57,726 INFO L168 Benchmark]: CDTParser took 0.21 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. [2020-12-17 23:48:57,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.99 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 246.6 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:57,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 302.0 MB. Free memory was 246.6 MB in the beginning and 244.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:57,728 INFO L168 Benchmark]: Boogie Preprocessor took 29.75 ms. Allocated memory is still 302.0 MB. Free memory was 244.6 MB in the beginning and 243.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:48:57,729 INFO L168 Benchmark]: RCFGBuilder took 578.09 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 261.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:57,730 INFO L168 Benchmark]: TraceAbstraction took 8803.47 ms. Allocated memory was 302.0 MB in the beginning and 3.8 GB in the end (delta: 3.5 GB). Free memory was 261.6 MB in the beginning and 3.2 GB in the end (delta: -3.0 GB). Peak memory consumption was 520.6 MB. Max. memory is 16.0 GB. [2020-12-17 23:48:57,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 676.99 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 246.6 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 302.0 MB. Free memory was 246.6 MB in the beginning and 244.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.75 ms. Allocated memory is still 302.0 MB. Free memory was 244.6 MB in the beginning and 243.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 578.09 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 261.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8803.47 ms. Allocated memory was 302.0 MB in the beginning and 3.8 GB in the end (delta: 3.5 GB). Free memory was 261.6 MB in the beginning and 3.2 GB in the end (delta: -3.0 GB). Peak memory consumption was 520.6 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 1295 SDtfs, 2011 SDslu, 4373 SDs, 0 SdLazy, 493 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61275occurred in iteration=5, 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, 1.5s InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 63591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...