/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:41:36,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:41:36,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:41:36,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:41:36,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:41:36,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:41:36,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:41:36,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:41:36,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:41:36,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:41:36,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:41:36,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:41:36,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:41:36,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:41:36,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:41:36,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:41:36,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:41:36,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:41:36,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:41:36,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:41:36,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:41:36,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:41:36,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:41:36,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:41:36,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:41:36,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:41:36,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:41:36,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:41:36,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:41:36,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:41:36,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:41:36,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:41:36,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:41:36,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:41:36,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:41:36,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:41:36,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 14:41:36,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:41:36,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:41:36,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:41:36,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:41:36,398 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:41:36,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:41:36,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:41:36,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:41:36,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:41:36,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:41:36,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:41:36,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:41:36,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:41:36,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:41:36,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:41:36,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:41:36,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:41:36,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:41:36,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:41:36,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:41:36,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:41:36,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:41:36,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:41:36,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:41:36,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:41:36,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:41:36,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:41:36,405 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:41:36,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:41:36,405 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:41:36,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:41:36,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:41:36,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:41:36,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:41:36,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:41:36,925 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:41:36,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-01-20 14:41:37,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834713c59/1ebcbdedb2994ff4af3a06eb6a9447dd/FLAGc7602025e [2021-01-20 14:41:37,744 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:41:37,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-01-20 14:41:37,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834713c59/1ebcbdedb2994ff4af3a06eb6a9447dd/FLAGc7602025e [2021-01-20 14:41:38,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834713c59/1ebcbdedb2994ff4af3a06eb6a9447dd [2021-01-20 14:41:38,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:41:38,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:41:38,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:41:38,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:41:38,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:41:38,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c0f17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38, skipping insertion in model container [2021-01-20 14:41:38,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:41:38,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:41:38,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:41:38,478 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:41:38,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:41:38,692 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:41:38,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38 WrapperNode [2021-01-20 14:41:38,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:41:38,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:41:38,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:41:38,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:41:38,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:41:38,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:41:38,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:41:38,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:41:38,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... [2021-01-20 14:41:38,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:41:38,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:41:38,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:41:38,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:41:38,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:41:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:41:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:41:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:41:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:41:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:41:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:41:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:41:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:41:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:41:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:41:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:41:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:41:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:41:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:41:38,939 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:41:39,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:41:39,407 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:41:39,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:41:39 BoogieIcfgContainer [2021-01-20 14:41:39,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:41:39,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:41:39,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:41:39,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:41:39,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:41:38" (1/3) ... [2021-01-20 14:41:39,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491bd5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:41:39, skipping insertion in model container [2021-01-20 14:41:39,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:41:38" (2/3) ... [2021-01-20 14:41:39,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491bd5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:41:39, skipping insertion in model container [2021-01-20 14:41:39,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:41:39" (3/3) ... [2021-01-20 14:41:39,418 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-01-20 14:41:39,434 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:41:39,434 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:41:39,438 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:41:39,439 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:41:39,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,477 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,477 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,477 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,488 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,488 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,488 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,497 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:41:39,509 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:41:39,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:41:39,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:41:39,546 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:41:39,546 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:41:39,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:41:39,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:41:39,547 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:41:39,547 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:41:39,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:41:39,560 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-20 14:41:40,347 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8475 states, 8473 states have (on average 3.5872772335654433) internal successors, (30395), 8474 states have internal predecessors, (30395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 8475 states, 8473 states have (on average 3.5872772335654433) internal successors, (30395), 8474 states have internal predecessors, (30395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:41:40,434 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:40,435 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:40,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:40,443 INFO L82 PathProgramCache]: Analyzing trace with hash 161629245, now seen corresponding path program 1 times [2021-01-20 14:41:40,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:40,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918739968] [2021-01-20 14:41:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:40,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918739968] [2021-01-20 14:41:40,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:40,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:40,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514033427] [2021-01-20 14:41:40,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:40,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:41,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:41,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:41,046 INFO L87 Difference]: Start difference. First operand has 8475 states, 8473 states have (on average 3.5872772335654433) internal successors, (30395), 8474 states have internal predecessors, (30395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:41,666 INFO L93 Difference]: Finished difference Result 11247 states and 38861 transitions. [2021-01-20 14:41:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-20 14:41:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:41,741 INFO L225 Difference]: With dead ends: 11247 [2021-01-20 14:41:41,742 INFO L226 Difference]: Without dead ends: 4317 [2021-01-20 14:41:41,745 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:41,745 INFO L78 Accepts]: Start accepts. Automaton has 4317 states. Word has length 41 [2021-01-20 14:41:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:41,747 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states. [2021-01-20 14:41:41,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states. [2021-01-20 14:41:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:41:41,769 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:41,770 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:41,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:41:41,772 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:41,780 INFO L82 PathProgramCache]: Analyzing trace with hash -211897154, now seen corresponding path program 1 times [2021-01-20 14:41:41,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:41,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762682309] [2021-01-20 14:41:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:41,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762682309] [2021-01-20 14:41:41,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:41,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:41,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517399926] [2021-01-20 14:41:41,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:41,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:41,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:41,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:41,992 INFO L87 Difference]: Start difference. First operand 4317 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) [2021-01-20 14:41:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:42,172 INFO L93 Difference]: Finished difference Result 4749 states and 15906 transitions. [2021-01-20 14:41:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:42,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:41:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:42,205 INFO L225 Difference]: With dead ends: 4749 [2021-01-20 14:41:42,205 INFO L226 Difference]: Without dead ends: 3741 [2021-01-20 14:41:42,206 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:42,206 INFO L78 Accepts]: Start accepts. Automaton has 3741 states. Word has length 43 [2021-01-20 14:41:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:42,207 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states. [2021-01-20 14:41:42,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states. [2021-01-20 14:41:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:41:42,219 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:42,220 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:42,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:41:42,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:42,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1129606237, now seen corresponding path program 1 times [2021-01-20 14:41:42,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:42,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740953799] [2021-01-20 14:41:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:42,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740953799] [2021-01-20 14:41:42,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:42,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:42,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440931542] [2021-01-20 14:41:42,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:42,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:42,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:42,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:42,365 INFO L87 Difference]: Start difference. First operand 3741 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) [2021-01-20 14:41:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:42,622 INFO L93 Difference]: Finished difference Result 3981 states and 13234 transitions. [2021-01-20 14:41:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:42,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:41:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:42,655 INFO L225 Difference]: With dead ends: 3981 [2021-01-20 14:41:42,656 INFO L226 Difference]: Without dead ends: 3421 [2021-01-20 14:41:42,656 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:42,656 INFO L78 Accepts]: Start accepts. Automaton has 3421 states. Word has length 45 [2021-01-20 14:41:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:42,657 INFO L481 AbstractCegarLoop]: Abstraction has 3421 states. [2021-01-20 14:41:42,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states. [2021-01-20 14:41:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 14:41:42,670 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:42,670 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:42,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:41:42,670 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1685758671, now seen corresponding path program 1 times [2021-01-20 14:41:42,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:42,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065898464] [2021-01-20 14:41:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:42,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065898464] [2021-01-20 14:41:42,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:42,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:42,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868476611] [2021-01-20 14:41:42,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:42,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:42,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:42,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:42,794 INFO L87 Difference]: Start difference. First operand 3421 states. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:43,031 INFO L93 Difference]: Finished difference Result 5325 states and 17442 transitions. [2021-01-20 14:41:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-20 14:41:43,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:43,062 INFO L225 Difference]: With dead ends: 5325 [2021-01-20 14:41:43,062 INFO L226 Difference]: Without dead ends: 3741 [2021-01-20 14:41:43,063 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 [2021-01-20 14:41:43,063 INFO L78 Accepts]: Start accepts. Automaton has 3741 states. Word has length 46 [2021-01-20 14:41:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:43,063 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states. [2021-01-20 14:41:43,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states. [2021-01-20 14:41:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:41:43,074 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:43,074 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:43,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:41:43,075 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1976118498, now seen corresponding path program 1 times [2021-01-20 14:41:43,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:43,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896708048] [2021-01-20 14:41:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:43,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896708048] [2021-01-20 14:41:43,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:43,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:41:43,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393841588] [2021-01-20 14:41:43,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:41:43,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:43,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:41:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:41:43,215 INFO L87 Difference]: Start difference. First operand 3741 states. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:43,415 INFO L93 Difference]: Finished difference Result 5093 states and 16256 transitions. [2021-01-20 14:41:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:41:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:41:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:43,461 INFO L225 Difference]: With dead ends: 5093 [2021-01-20 14:41:43,461 INFO L226 Difference]: Without dead ends: 2763 [2021-01-20 14:41:43,462 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:41:43,462 INFO L78 Accepts]: Start accepts. Automaton has 2763 states. Word has length 47 [2021-01-20 14:41:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:43,462 INFO L481 AbstractCegarLoop]: Abstraction has 2763 states. [2021-01-20 14:41:43,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states. [2021-01-20 14:41:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:41:43,470 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:43,471 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 14:41:43,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:41:43,471 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1323121340, now seen corresponding path program 1 times [2021-01-20 14:41:43,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:43,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576397728] [2021-01-20 14:41:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:43,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576397728] [2021-01-20 14:41:43,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:43,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:41:43,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017789636] [2021-01-20 14:41:43,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:41:43,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:41:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:41:43,667 INFO L87 Difference]: Start difference. First operand 2763 states. 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 14:41:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:43,796 INFO L93 Difference]: Finished difference Result 3219 states and 10055 transitions. [2021-01-20 14:41:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:41:43,796 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 14:41:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:43,803 INFO L225 Difference]: With dead ends: 3219 [2021-01-20 14:41:43,803 INFO L226 Difference]: Without dead ends: 1243 [2021-01-20 14:41:43,804 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:43,804 INFO L78 Accepts]: Start accepts. Automaton has 1243 states. Word has length 48 [2021-01-20 14:41:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:43,804 INFO L481 AbstractCegarLoop]: Abstraction has 1243 states. [2021-01-20 14:41:43,804 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 14:41:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states. [2021-01-20 14:41:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:41:43,808 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:43,808 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 14:41:43,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:41:43,808 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1461125196, now seen corresponding path program 2 times [2021-01-20 14:41:43,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:43,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983535503] [2021-01-20 14:41:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:43,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983535503] [2021-01-20 14:41:43,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:43,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:41:43,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056041894] [2021-01-20 14:41:43,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:41:43,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:41:43,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:41:43,989 INFO L87 Difference]: Start difference. First operand 1243 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:44,128 INFO L93 Difference]: Finished difference Result 1438 states and 4334 transitions. [2021-01-20 14:41:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:41:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:41:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:44,133 INFO L225 Difference]: With dead ends: 1438 [2021-01-20 14:41:44,134 INFO L226 Difference]: Without dead ends: 1118 [2021-01-20 14:41:44,134 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:41:44,134 INFO L78 Accepts]: Start accepts. Automaton has 1118 states. Word has length 48 [2021-01-20 14:41:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:44,135 INFO L481 AbstractCegarLoop]: Abstraction has 1118 states. [2021-01-20 14:41:44,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states. [2021-01-20 14:41:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:41:44,139 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:44,139 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:44,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:41:44,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash 978213438, now seen corresponding path program 1 times [2021-01-20 14:41:44,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:44,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792098999] [2021-01-20 14:41:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:44,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792098999] [2021-01-20 14:41:44,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:44,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:41:44,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876253900] [2021-01-20 14:41:44,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:41:44,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:44,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:41:44,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:41:44,356 INFO L87 Difference]: Start difference. First operand 1118 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:44,548 INFO L93 Difference]: Finished difference Result 950 states and 2753 transitions. [2021-01-20 14:41:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:41:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:41:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:44,552 INFO L225 Difference]: With dead ends: 950 [2021-01-20 14:41:44,552 INFO L226 Difference]: Without dead ends: 698 [2021-01-20 14:41:44,553 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:41:44,553 INFO L78 Accepts]: Start accepts. Automaton has 698 states. Word has length 49 [2021-01-20 14:41:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:44,554 INFO L481 AbstractCegarLoop]: Abstraction has 698 states. [2021-01-20 14:41:44,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:41:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states. [2021-01-20 14:41:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:41:44,557 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:41:44,557 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:41:44,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:41:44,558 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:41:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:41:44,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2037269753, now seen corresponding path program 1 times [2021-01-20 14:41:44,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:41:44,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127305160] [2021-01-20 14:41:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:41:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:41:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:41:44,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127305160] [2021-01-20 14:41:44,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:41:44,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:41:44,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16389443] [2021-01-20 14:41:44,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:41:44,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:41:44,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:41:44,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:41:44,732 INFO L87 Difference]: Start difference. First operand 698 states. 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 14:41:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:41:44,858 INFO L93 Difference]: Finished difference Result 311 states and 815 transitions. [2021-01-20 14:41:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 14:41:44,859 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 14:41:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:41:44,859 INFO L225 Difference]: With dead ends: 311 [2021-01-20 14:41:44,859 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:41:44,860 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:41:44,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 50 [2021-01-20 14:41:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:41:44,865 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:41:44,866 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 14:41:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:41:44,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:41:44,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:41:44,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:41:44 BasicIcfg [2021-01-20 14:41:44,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:41:44,876 INFO L168 Benchmark]: Toolchain (without parser) took 6836.91 ms. Allocated memory was 302.0 MB in the beginning and 648.0 MB in the end (delta: 346.0 MB). Free memory was 277.1 MB in the beginning and 492.8 MB in the end (delta: -215.8 MB). Peak memory consumption was 132.9 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:44,877 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:41:44,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.93 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 245.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:44,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.26 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 283.5 MB in the end (delta: -37.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:44,880 INFO L168 Benchmark]: Boogie Preprocessor took 58.46 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:41:44,886 INFO L168 Benchmark]: RCFGBuilder took 562.46 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 260.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:44,887 INFO L168 Benchmark]: TraceAbstraction took 5462.26 ms. Allocated memory was 302.0 MB in the beginning and 648.0 MB in the end (delta: 346.0 MB). Free memory was 259.4 MB in the beginning and 492.8 MB in the end (delta: -233.5 MB). Peak memory consumption was 113.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:41:44,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 652.93 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 245.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 92.26 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 283.5 MB in the end (delta: -37.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 58.46 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 562.46 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 260.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5462.26 ms. Allocated memory was 302.0 MB in the beginning and 648.0 MB in the end (delta: 346.0 MB). Free memory was 259.4 MB in the beginning and 492.8 MB in the end (delta: -233.5 MB). Peak memory consumption was 113.6 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: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 796 SDtfs, 979 SDslu, 2482 SDs, 0 SdLazy, 277 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8475occurred 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, 1.2s InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 52356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...