/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:32:49,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:32:49,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:32:49,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:32:49,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:32:49,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:32:49,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:32:49,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:32:50,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:32:50,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:32:50,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:32:50,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:32:50,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:32:50,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:32:50,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:32:50,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:32:50,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:32:50,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:32:50,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:32:50,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:32:50,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:32:50,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:32:50,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:32:50,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:32:50,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:32:50,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:32:50,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:32:50,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:32:50,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:32:50,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:32:50,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:32:50,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:32:50,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:32:50,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:32:50,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:32:50,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:32:50,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-26 17:32:50,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:32:50,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:32:50,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:32:50,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:32:50,135 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:32:50,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:32:50,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:32:50,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:32:50,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:32:50,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:32:50,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:32:50,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:32:50,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:32:50,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:32:50,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:32:50,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:32:50,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:32:50,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:32:50,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:32:50,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:32:50,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:32:50,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:32:50,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:32:50,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:32:50,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:32:50,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:32:50,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:32:50,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:32:50,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:32:50,141 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:32:50,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:32:50,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:32:50,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:32:50,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:32:50,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:32:50,550 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:32:50,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-01-26 17:32:50,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f466ccd/361f71df095849bebdcde95e56c70357/FLAGe6f7115e4 [2021-01-26 17:32:51,307 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:32:51,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-01-26 17:32:51,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f466ccd/361f71df095849bebdcde95e56c70357/FLAGe6f7115e4 [2021-01-26 17:32:51,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f466ccd/361f71df095849bebdcde95e56c70357 [2021-01-26 17:32:51,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:32:51,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:32:51,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:32:51,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:32:51,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:32:51,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:32:51" (1/1) ... [2021-01-26 17:32:51,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fa4269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:51, skipping insertion in model container [2021-01-26 17:32:51,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:32:51" (1/1) ... [2021-01-26 17:32:51,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:32:51,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:32:52,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:32:52,027 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:32:52,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:32:52,177 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:32:52,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52 WrapperNode [2021-01-26 17:32:52,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:32:52,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:32:52,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:32:52,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:32:52,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:32:52,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:32:52,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:32:52,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:32:52,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... [2021-01-26 17:32:52,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:32:52,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:32:52,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:32:52,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:32:52,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:32:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:32:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:32:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:32:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:32:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:32:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:32:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:32:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:32:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:32:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:32:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:32:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:32:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:32:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:32:52,412 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:32:52,966 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:32:52,967 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:32:52,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:32:52 BoogieIcfgContainer [2021-01-26 17:32:52,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:32:52,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:32:52,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:32:52,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:32:52,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:32:51" (1/3) ... [2021-01-26 17:32:52,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14230092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:32:52, skipping insertion in model container [2021-01-26 17:32:52,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:32:52" (2/3) ... [2021-01-26 17:32:52,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14230092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:32:52, skipping insertion in model container [2021-01-26 17:32:52,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:32:52" (3/3) ... [2021-01-26 17:32:52,979 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-01-26 17:32:52,996 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:32:52,996 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:32:53,000 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:32:53,001 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:32:53,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,043 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,049 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,049 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,052 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,052 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,059 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,064 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,064 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:32:53,068 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:32:53,081 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:32:53,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:32:53,107 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:32:53,107 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:32:53,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:32:53,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:32:53,108 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:32:53,108 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:32:53,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:32:53,120 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-26 17:32:53,815 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 17:32:53,908 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:53,910 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:53,910 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:53,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1677715490, now seen corresponding path program 1 times [2021-01-26 17:32:53,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:53,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106427403] [2021-01-26 17:32:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:54,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106427403] [2021-01-26 17:32:54,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:54,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:32:54,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45394607] [2021-01-26 17:32:54,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:32:54,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:32:54,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:32:54,449 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:54,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:54,947 INFO L93 Difference]: Finished difference Result 11219 states and 38781 transitions. [2021-01-26 17:32:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:32:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-26 17:32:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:55,009 INFO L225 Difference]: With dead ends: 11219 [2021-01-26 17:32:55,009 INFO L226 Difference]: Without dead ends: 4289 [2021-01-26 17:32:55,011 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:32:55,011 INFO L78 Accepts]: Start accepts. Automaton has 4289 states. Word has length 41 [2021-01-26 17:32:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:55,013 INFO L481 AbstractCegarLoop]: Abstraction has 4289 states. [2021-01-26 17:32:55,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states. [2021-01-26 17:32:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-26 17:32:55,031 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:55,031 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:55,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:32:55,032 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1358789335, now seen corresponding path program 1 times [2021-01-26 17:32:55,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:55,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929417692] [2021-01-26 17:32:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:55,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929417692] [2021-01-26 17:32:55,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:55,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:32:55,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071729450] [2021-01-26 17:32:55,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:32:55,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:55,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:32:55,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:32:55,207 INFO L87 Difference]: Start difference. First operand 4289 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:55,395 INFO L93 Difference]: Finished difference Result 4721 states and 15826 transitions. [2021-01-26 17:32:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:32:55,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-26 17:32:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:55,429 INFO L225 Difference]: With dead ends: 4721 [2021-01-26 17:32:55,429 INFO L226 Difference]: Without dead ends: 3713 [2021-01-26 17:32:55,430 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:32:55,430 INFO L78 Accepts]: Start accepts. Automaton has 3713 states. Word has length 43 [2021-01-26 17:32:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:55,431 INFO L481 AbstractCegarLoop]: Abstraction has 3713 states. [2021-01-26 17:32:55,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states. [2021-01-26 17:32:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:32:55,443 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:55,443 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:55,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:32:55,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash -76177078, now seen corresponding path program 1 times [2021-01-26 17:32:55,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:55,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326791673] [2021-01-26 17:32:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:55,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326791673] [2021-01-26 17:32:55,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:55,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:32:55,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131683717] [2021-01-26 17:32:55,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:32:55,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:32:55,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:32:55,638 INFO L87 Difference]: Start difference. First operand 3713 states. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:55,957 INFO L93 Difference]: Finished difference Result 4553 states and 15064 transitions. [2021-01-26 17:32:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:32:55,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-26 17:32:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:55,990 INFO L225 Difference]: With dead ends: 4553 [2021-01-26 17:32:55,990 INFO L226 Difference]: Without dead ends: 3377 [2021-01-26 17:32:55,992 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:32:55,992 INFO L78 Accepts]: Start accepts. Automaton has 3377 states. Word has length 45 [2021-01-26 17:32:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:55,993 INFO L481 AbstractCegarLoop]: Abstraction has 3377 states. [2021-01-26 17:32:55,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states. [2021-01-26 17:32:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 17:32:56,004 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:56,004 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:56,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:32:56,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1683529846, now seen corresponding path program 1 times [2021-01-26 17:32:56,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:56,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470875056] [2021-01-26 17:32:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:56,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470875056] [2021-01-26 17:32:56,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:56,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:32:56,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785927134] [2021-01-26 17:32:56,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:32:56,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:56,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:32:56,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:32:56,284 INFO L87 Difference]: Start difference. First operand 3377 states. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:56,482 INFO L93 Difference]: Finished difference Result 3281 states and 10456 transitions. [2021-01-26 17:32:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:32:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-26 17:32:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:56,503 INFO L225 Difference]: With dead ends: 3281 [2021-01-26 17:32:56,503 INFO L226 Difference]: Without dead ends: 2297 [2021-01-26 17:32:56,504 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 17:32:56,504 INFO L78 Accepts]: Start accepts. Automaton has 2297 states. Word has length 46 [2021-01-26 17:32:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:56,505 INFO L481 AbstractCegarLoop]: Abstraction has 2297 states. [2021-01-26 17:32:56,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states. [2021-01-26 17:32:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-26 17:32:56,512 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:56,512 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:56,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:32:56,513 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 563011175, now seen corresponding path program 1 times [2021-01-26 17:32:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:56,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478834408] [2021-01-26 17:32:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:56,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478834408] [2021-01-26 17:32:56,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:56,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:32:56,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628194561] [2021-01-26 17:32:56,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:32:56,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:56,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:32:56,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:32:56,644 INFO L87 Difference]: Start difference. First operand 2297 states. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:56,877 INFO L93 Difference]: Finished difference Result 1658 states and 4985 transitions. [2021-01-26 17:32:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:32:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-26 17:32:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:56,887 INFO L225 Difference]: With dead ends: 1658 [2021-01-26 17:32:56,887 INFO L226 Difference]: Without dead ends: 1154 [2021-01-26 17:32:56,888 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-26 17:32:56,888 INFO L78 Accepts]: Start accepts. Automaton has 1154 states. Word has length 48 [2021-01-26 17:32:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:56,889 INFO L481 AbstractCegarLoop]: Abstraction has 1154 states. [2021-01-26 17:32:56,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states. [2021-01-26 17:32:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:32:56,893 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:56,894 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:56,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:32:56,894 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1443652201, now seen corresponding path program 1 times [2021-01-26 17:32:56,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:56,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300211716] [2021-01-26 17:32:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:57,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300211716] [2021-01-26 17:32:57,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:57,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:32:57,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576192466] [2021-01-26 17:32:57,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:32:57,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:57,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:32:57,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:32:57,019 INFO L87 Difference]: Start difference. First operand 1154 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:57,119 INFO L93 Difference]: Finished difference Result 1637 states and 4789 transitions. [2021-01-26 17:32:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:32:57,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 17:32:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:57,125 INFO L225 Difference]: With dead ends: 1637 [2021-01-26 17:32:57,125 INFO L226 Difference]: Without dead ends: 834 [2021-01-26 17:32:57,126 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:32:57,126 INFO L78 Accepts]: Start accepts. Automaton has 834 states. Word has length 52 [2021-01-26 17:32:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:57,126 INFO L481 AbstractCegarLoop]: Abstraction has 834 states. [2021-01-26 17:32:57,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states. [2021-01-26 17:32:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:32:57,130 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:57,131 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:57,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:32:57,131 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1808649785, now seen corresponding path program 2 times [2021-01-26 17:32:57,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:57,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110767053] [2021-01-26 17:32:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:57,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110767053] [2021-01-26 17:32:57,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:57,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:32:57,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739608183] [2021-01-26 17:32:57,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:32:57,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:57,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:32:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:32:57,293 INFO L87 Difference]: Start difference. First operand 834 states. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:57,373 INFO L93 Difference]: Finished difference Result 1205 states and 3469 transitions. [2021-01-26 17:32:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-26 17:32:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 17:32:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:57,383 INFO L225 Difference]: With dead ends: 1205 [2021-01-26 17:32:57,384 INFO L226 Difference]: Without dead ends: 658 [2021-01-26 17:32:57,384 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-26 17:32:57,384 INFO L78 Accepts]: Start accepts. Automaton has 658 states. Word has length 52 [2021-01-26 17:32:57,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:57,385 INFO L481 AbstractCegarLoop]: Abstraction has 658 states. [2021-01-26 17:32:57,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states. [2021-01-26 17:32:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:32:57,389 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:32:57,390 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:32:57,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:32:57,390 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:32:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:32:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash 976887845, now seen corresponding path program 3 times [2021-01-26 17:32:57,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:32:57,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118463339] [2021-01-26 17:32:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:32:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:32:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:32:57,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118463339] [2021-01-26 17:32:57,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:32:57,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:32:57,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030435197] [2021-01-26 17:32:57,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:32:57,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:32:57,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:32:57,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:32:57,560 INFO L87 Difference]: Start difference. First operand 658 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:32:57,649 INFO L93 Difference]: Finished difference Result 550 states and 1528 transitions. [2021-01-26 17:32:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:32:57,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 17:32:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:32:57,650 INFO L225 Difference]: With dead ends: 550 [2021-01-26 17:32:57,651 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:32:57,651 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:32:57,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 52 [2021-01-26 17:32:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:32:57,652 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:32:57,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:32:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:32:57,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:32:57,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:32:57,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:32:57 BasicIcfg [2021-01-26 17:32:57,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:32:57,661 INFO L168 Benchmark]: Toolchain (without parser) took 6072.94 ms. Allocated memory was 302.0 MB in the beginning and 637.5 MB in the end (delta: 335.5 MB). Free memory was 276.7 MB in the beginning and 540.5 MB in the end (delta: -263.8 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:32:57,661 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.1 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:32:57,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.59 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 245.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-26 17:32:57,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.03 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 243.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:32:57,664 INFO L168 Benchmark]: Boogie Preprocessor took 78.05 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 284.2 MB in the end (delta: -41.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.0 GB. [2021-01-26 17:32:57,665 INFO L168 Benchmark]: RCFGBuilder took 653.09 ms. Allocated memory is still 302.0 MB. Free memory was 283.2 MB in the beginning and 261.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-01-26 17:32:57,666 INFO L168 Benchmark]: TraceAbstraction took 4686.73 ms. Allocated memory was 302.0 MB in the beginning and 637.5 MB in the end (delta: 335.5 MB). Free memory was 260.5 MB in the beginning and 540.5 MB in the end (delta: -280.0 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.0 GB. [2021-01-26 17:32:57,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.1 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 579.59 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 245.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.03 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 243.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 78.05 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 284.2 MB in the end (delta: -41.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 653.09 ms. Allocated memory is still 302.0 MB. Free memory was 283.2 MB in the beginning and 261.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4686.73 ms. Allocated memory was 302.0 MB in the beginning and 637.5 MB in the end (delta: 335.5 MB). Free memory was 260.5 MB in the beginning and 540.5 MB in the end (delta: -280.0 MB). Peak memory consumption was 56.6 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 710 SDtfs, 959 SDslu, 2322 SDs, 0 SdLazy, 287 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8447occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 46105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...