/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/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:28:02,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:28:02,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:28:02,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:28:02,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:28:02,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:28:02,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:28:02,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:28:02,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:28:02,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:28:02,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:28:02,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:28:02,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:28:02,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:28:02,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:28:02,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:28:02,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:28:02,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:28:02,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:28:02,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:28:02,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:28:02,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:28:02,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:28:02,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:28:02,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:28:02,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:28:02,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:28:02,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:28:02,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:28:02,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:28:02,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:28:02,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:28:02,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:28:02,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:28:02,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:28:02,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:28:02,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 21:28:02,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:28:02,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:28:02,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:28:02,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:28:02,326 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:28:02,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:28:02,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:28:02,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:28:02,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:28:02,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:28:02,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:28:02,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:28:02,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:28:02,328 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:28:02,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:28:02,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:28:02,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:28:02,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:28:02,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:28:02,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:28:02,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:28:02,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:28:02,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:28:02,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:28:02,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:28:02,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:28:02,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:28:02,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:28:02,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:28:02,332 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:28:02,332 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:28:02,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:28:02,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:28:02,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:28:02,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:28:02,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:28:02,732 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:28:02,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2021-01-20 21:28:02,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6bacf3d/8fffed256bc94c7b91c1380dc9be7d65/FLAG361cfca2c [2021-01-20 21:28:03,497 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:28:03,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2021-01-20 21:28:03,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6bacf3d/8fffed256bc94c7b91c1380dc9be7d65/FLAG361cfca2c [2021-01-20 21:28:03,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6bacf3d/8fffed256bc94c7b91c1380dc9be7d65 [2021-01-20 21:28:03,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:28:03,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:28:03,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:28:03,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:28:03,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:28:03,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:28:03" (1/1) ... [2021-01-20 21:28:03,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb9cc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:03, skipping insertion in model container [2021-01-20 21:28:03,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:28:03" (1/1) ... [2021-01-20 21:28:03,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:28:03,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:28:04,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:28:04,276 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:28:04,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:28:04,469 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:28:04,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04 WrapperNode [2021-01-20 21:28:04,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:28:04,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:28:04,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:28:04,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:28:04,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:28:04,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:28:04,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:28:04,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:28:04,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... [2021-01-20 21:28:04,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:28:04,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:28:04,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:28:04,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:28:04,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:28:04,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:28:04,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:28:04,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:28:04,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:28:04,631 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 21:28:05,126 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:28:05,127 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:28:05,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:28:05 BoogieIcfgContainer [2021-01-20 21:28:05,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:28:05,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:28:05,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:28:05,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:28:05,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:28:03" (1/3) ... [2021-01-20 21:28:05,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dd70d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:28:05, skipping insertion in model container [2021-01-20 21:28:05,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:28:04" (2/3) ... [2021-01-20 21:28:05,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dd70d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:28:05, skipping insertion in model container [2021-01-20 21:28:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:28:05" (3/3) ... [2021-01-20 21:28:05,141 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2021-01-20 21:28:05,159 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:28:05,159 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:28:05,164 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:28:05,165 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:28:05,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,210 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,210 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,211 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,211 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,213 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,213 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,214 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,214 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,214 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,214 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,219 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,219 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,219 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,221 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,221 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,221 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,232 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,233 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,248 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:28:05,255 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:28:05,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:28:05,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:28:05,295 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:28:05,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:28:05,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:28:05,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:28:05,296 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:28:05,296 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:28:05,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:28:05,309 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 21:28:06,253 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 21:28:06,364 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:06,365 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] [2021-01-20 21:28:06,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1266406659, now seen corresponding path program 1 times [2021-01-20 21:28:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:06,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473898739] [2021-01-20 21:28:06,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:06,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473898739] [2021-01-20 21:28:06,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:06,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:28:06,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289677124] [2021-01-20 21:28:06,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:28:06,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:06,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:28:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:28:06,996 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:07,436 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2021-01-20 21:28:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:28:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2021-01-20 21:28:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:07,443 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:28:07,443 INFO L78 Accepts]: Start accepts. Automaton has 11318 states and 39237 transitions. Word has length 42 [2021-01-20 21:28:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:07,446 INFO L481 AbstractCegarLoop]: Abstraction has 11318 states and 39237 transitions. [2021-01-20 21:28:07,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 11318 states and 39237 transitions. [2021-01-20 21:28:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:28:07,474 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:07,474 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:07,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:28:07,476 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:07,480 INFO L82 PathProgramCache]: Analyzing trace with hash 429548758, now seen corresponding path program 1 times [2021-01-20 21:28:07,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:07,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923226099] [2021-01-20 21:28:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:07,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923226099] [2021-01-20 21:28:07,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:07,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:28:07,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3057436] [2021-01-20 21:28:07,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:28:07,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:28:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:28:07,771 INFO L87 Difference]: Start difference. First operand 11318 states and 39237 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:08,275 INFO L93 Difference]: Finished difference Result 24744 states and 84744 transitions. [2021-01-20 21:28:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:28:08,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 21:28:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:08,277 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:28:08,277 INFO L78 Accepts]: Start accepts. Automaton has 24744 states and 84744 transitions. Word has length 45 [2021-01-20 21:28:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:08,278 INFO L481 AbstractCegarLoop]: Abstraction has 24744 states and 84744 transitions. [2021-01-20 21:28:08,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 24744 states and 84744 transitions. [2021-01-20 21:28:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:28:08,389 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:08,389 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:08,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:28:08,390 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:08,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1422766975, now seen corresponding path program 1 times [2021-01-20 21:28:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:08,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630743577] [2021-01-20 21:28:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:08,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630743577] [2021-01-20 21:28:08,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:08,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:28:08,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994937575] [2021-01-20 21:28:08,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:28:08,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:08,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:28:08,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:28:08,566 INFO L87 Difference]: Start difference. First operand 24744 states and 84744 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:08,980 INFO L93 Difference]: Finished difference Result 21558 states and 71824 transitions. [2021-01-20 21:28:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:28:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 21:28:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:08,982 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:28:08,982 INFO L78 Accepts]: Start accepts. Automaton has 21558 states and 71824 transitions. Word has length 47 [2021-01-20 21:28:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:08,982 INFO L481 AbstractCegarLoop]: Abstraction has 21558 states and 71824 transitions. [2021-01-20 21:28:08,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 21558 states and 71824 transitions. [2021-01-20 21:28:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:28:09,112 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:09,119 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:09,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:28:09,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1775856222, now seen corresponding path program 1 times [2021-01-20 21:28:09,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:09,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851647739] [2021-01-20 21:28:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:09,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851647739] [2021-01-20 21:28:09,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:09,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:28:09,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227862864] [2021-01-20 21:28:09,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:28:09,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:28:09,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:28:09,285 INFO L87 Difference]: Start difference. First operand 21558 states and 71824 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:09,667 INFO L93 Difference]: Finished difference Result 13368 states and 43072 transitions. [2021-01-20 21:28:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:28:09,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 21:28:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:09,672 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:28:09,673 INFO L78 Accepts]: Start accepts. Automaton has 13368 states and 43072 transitions. Word has length 48 [2021-01-20 21:28:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:09,673 INFO L481 AbstractCegarLoop]: Abstraction has 13368 states and 43072 transitions. [2021-01-20 21:28:09,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 13368 states and 43072 transitions. [2021-01-20 21:28:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:28:09,702 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:09,702 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:09,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:28:09,703 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:09,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2020113217, now seen corresponding path program 1 times [2021-01-20 21:28:09,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:09,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913578093] [2021-01-20 21:28:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:09,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913578093] [2021-01-20 21:28:09,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:09,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:28:09,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217562848] [2021-01-20 21:28:09,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:28:09,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:28:09,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:28:09,964 INFO L87 Difference]: Start difference. First operand 13368 states and 43072 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:10,292 INFO L93 Difference]: Finished difference Result 8418 states and 27094 transitions. [2021-01-20 21:28:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:28:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-20 21:28:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:10,294 INFO L769 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 [2021-01-20 21:28:10,294 INFO L78 Accepts]: Start accepts. Automaton has 8418 states and 27094 transitions. Word has length 50 [2021-01-20 21:28:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:10,295 INFO L481 AbstractCegarLoop]: Abstraction has 8418 states and 27094 transitions. [2021-01-20 21:28:10,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8418 states and 27094 transitions. [2021-01-20 21:28:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:28:10,333 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:10,334 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:10,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:28:10,334 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -54775455, now seen corresponding path program 1 times [2021-01-20 21:28:10,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:10,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767830072] [2021-01-20 21:28:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:10,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767830072] [2021-01-20 21:28:10,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:10,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:28:10,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818450588] [2021-01-20 21:28:10,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:28:10,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:28:10,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:28:10,501 INFO L87 Difference]: Start difference. First operand 8418 states and 27094 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:10,788 INFO L93 Difference]: Finished difference Result 13208 states and 41968 transitions. [2021-01-20 21:28:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 21:28:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 21:28:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:10,791 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 21:28:10,791 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 41968 transitions. Word has length 54 [2021-01-20 21:28:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:10,792 INFO L481 AbstractCegarLoop]: Abstraction has 13208 states and 41968 transitions. [2021-01-20 21:28:10,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 41968 transitions. [2021-01-20 21:28:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:28:10,855 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:10,855 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:10,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:28:10,856 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1436109045, now seen corresponding path program 2 times [2021-01-20 21:28:10,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:10,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899583599] [2021-01-20 21:28:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:11,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899583599] [2021-01-20 21:28:11,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:11,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:28:11,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685961008] [2021-01-20 21:28:11,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:28:11,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:28:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:28:11,044 INFO L87 Difference]: Start difference. First operand 13208 states and 41968 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:11,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:11,449 INFO L93 Difference]: Finished difference Result 17918 states and 56638 transitions. [2021-01-20 21:28:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-20 21:28:11,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 21:28:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:11,451 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-01-20 21:28:11,451 INFO L78 Accepts]: Start accepts. Automaton has 17918 states and 56638 transitions. Word has length 54 [2021-01-20 21:28:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:11,451 INFO L481 AbstractCegarLoop]: Abstraction has 17918 states and 56638 transitions. [2021-01-20 21:28:11,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 17918 states and 56638 transitions. [2021-01-20 21:28:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:28:11,488 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:28:11,488 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:28:11,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:28:11,489 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:28:11,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:28:11,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1423150337, now seen corresponding path program 3 times [2021-01-20 21:28:11,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:28:11,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528292542] [2021-01-20 21:28:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:28:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:28:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:28:11,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528292542] [2021-01-20 21:28:11,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:28:11,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:28:11,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062924817] [2021-01-20 21:28:11,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:28:11,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:28:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:28:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:28:11,620 INFO L87 Difference]: Start difference. First operand 17918 states and 56638 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:11,911 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-01-20 21:28:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:28:11,968 INFO L93 Difference]: Finished difference Result 24405 states and 76693 transitions. [2021-01-20 21:28:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:28:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 21:28:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:28:11,970 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:28:11,970 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 76693 transitions. Word has length 54 [2021-01-20 21:28:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:28:11,971 INFO L481 AbstractCegarLoop]: Abstraction has 24405 states and 76693 transitions. [2021-01-20 21:28:11,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:28:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 76693 transitions. [2021-01-20 21:28:12,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:28:12,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:28:12,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:28:12 BasicIcfg [2021-01-20 21:28:12,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:28:12,029 INFO L168 Benchmark]: Toolchain (without parser) took 8251.02 ms. Allocated memory was 310.4 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 284.3 MB in the beginning and 1.2 GB in the end (delta: -894.3 MB). Peak memory consumption was 252.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:28:12,029 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 310.4 MB. Free memory was 281.4 MB in the beginning and 281.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:28:12,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.94 ms. Allocated memory is still 310.4 MB. Free memory was 284.2 MB in the beginning and 284.8 MB in the end (delta: -690.9 kB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:28:12,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.99 ms. Allocated memory is still 310.4 MB. Free memory was 284.8 MB in the beginning and 282.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-01-20 21:28:12,033 INFO L168 Benchmark]: Boogie Preprocessor took 28.74 ms. Allocated memory is still 310.4 MB. Free memory was 282.4 MB in the beginning and 281.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:28:12,033 INFO L168 Benchmark]: RCFGBuilder took 580.74 ms. Allocated memory is still 310.4 MB. Free memory was 281.4 MB in the beginning and 257.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:28:12,038 INFO L168 Benchmark]: TraceAbstraction took 6886.91 ms. Allocated memory was 310.4 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 257.6 MB in the beginning and 1.2 GB in the end (delta: -921.0 MB). Peak memory consumption was 224.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:28:12,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 310.4 MB. Free memory was 281.4 MB in the beginning and 281.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 696.94 ms. Allocated memory is still 310.4 MB. Free memory was 284.2 MB in the beginning and 284.8 MB in the end (delta: -690.9 kB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.99 ms. Allocated memory is still 310.4 MB. Free memory was 284.8 MB in the beginning and 282.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.74 ms. Allocated memory is still 310.4 MB. Free memory was 282.4 MB in the beginning and 281.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 580.74 ms. Allocated memory is still 310.4 MB. Free memory was 281.4 MB in the beginning and 257.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6886.91 ms. Allocated memory was 310.4 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 257.6 MB in the beginning and 1.2 GB in the end (delta: -921.0 MB). Peak memory consumption was 224.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 975 SDtfs, 1678 SDslu, 3447 SDs, 0 SdLazy, 390 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24744occurred in iteration=2, 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, 1.2s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 45628 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...