/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:57:43,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:57:43,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:57:43,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:57:43,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:57:43,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:57:43,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:57:43,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:57:43,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:57:43,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:57:43,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:57:43,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:57:43,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:57:43,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:57:43,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:57:43,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:57:43,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:57:43,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:57:43,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:57:43,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:57:43,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:57:43,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:57:43,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:57:43,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:57:43,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 23:57:43,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:57:43,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:57:43,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:57:43,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:57:43,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:57:43,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:57:43,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:57:43,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:57:43,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:57:43,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:57:43,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:57:43,917 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-SemanticLbe.epf [2020-11-11 23:57:43,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:57:43,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:57:43,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:57:43,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:57:43,974 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:57:43,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:57:43,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:57:43,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:57:43,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:57:43,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:57:43,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:57:43,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:57:43,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:57:43,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:57:43,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:57:43,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:57:43,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:57:43,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:57:43,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:57:43,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:57:43,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:57:43,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:57:43,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:57:43,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:57:43,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:57:43,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:57:43,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:57:43,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:57:43,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:57:44,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:57:44,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:57:44,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:57:44,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:57:44,442 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:57:44,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-11 23:57:44,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f6eb3d1/fa8dad876f7a456b8f46bd49573a4545/FLAG4ca982f74 [2020-11-11 23:57:45,205 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:57:45,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-11 23:57:45,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f6eb3d1/fa8dad876f7a456b8f46bd49573a4545/FLAG4ca982f74 [2020-11-11 23:57:45,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f6eb3d1/fa8dad876f7a456b8f46bd49573a4545 [2020-11-11 23:57:45,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:57:45,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:57:45,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:57:45,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:57:45,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:57:45,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:57:45" (1/1) ... [2020-11-11 23:57:45,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a30fcb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:45, skipping insertion in model container [2020-11-11 23:57:45,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:57:45" (1/1) ... [2020-11-11 23:57:45,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:57:45,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:57:46,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:57:46,076 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:57:46,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:57:46,249 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:57:46,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46 WrapperNode [2020-11-11 23:57:46,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:57:46,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:57:46,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:57:46,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:57:46,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:57:46,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:57:46,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:57:46,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:57:46,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... [2020-11-11 23:57:46,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:57:46,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:57:46,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:57:46,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:57:46,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:57:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:57:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:57:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:57:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:57:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:57:46,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:57:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:57:46,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:57:46,417 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:57:46,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:57:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:57:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:57:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:57:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:57:46,422 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:57:46,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:57:46,933 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:57:46,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:46 BoogieIcfgContainer [2020-11-11 23:57:46,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:57:46,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:57:46,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:57:46,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:57:46,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:57:45" (1/3) ... [2020-11-11 23:57:46,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cfe923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:57:46, skipping insertion in model container [2020-11-11 23:57:46,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:46" (2/3) ... [2020-11-11 23:57:46,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cfe923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:57:46, skipping insertion in model container [2020-11-11 23:57:46,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:46" (3/3) ... [2020-11-11 23:57:46,944 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-11-11 23:57:46,960 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:57:46,961 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:57:46,965 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:57:46,966 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:57:46,999 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,000 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,000 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,000 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,000 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,004 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,004 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,004 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,006 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,006 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,007 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,007 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,012 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,012 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,019 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,019 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,020 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,020 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:57:47,030 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:57:47,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:57:47,066 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:57:47,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:57:47,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:57:47,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:57:47,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:57:47,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:57:47,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:57:47,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:57:47,079 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:57:47,081 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-11 23:57:47,084 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-11 23:57:47,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-11-11 23:57:47,130 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-11-11 23:57:47,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:57:47,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-11 23:57:47,144 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-11 23:57:50,734 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-11 23:57:50,938 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-11 23:57:51,329 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-11 23:57:51,435 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-11 23:57:51,660 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-11 23:57:51,778 INFO L131 LiptonReduction]: Checked pairs total: 2279 [2020-11-11 23:57:51,779 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-11-11 23:57:51,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-11 23:57:51,813 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 274 states, 272 states have (on average 3.0661764705882355) internal successors, (834), 273 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 272 states have (on average 3.0661764705882355) internal successors, (834), 273 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:57:51,825 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:51,826 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:51,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash -861297365, now seen corresponding path program 1 times [2020-11-11 23:57:51,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:51,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996837071] [2020-11-11 23:57:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:52,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996837071] [2020-11-11 23:57:52,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:52,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:57:52,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021961941] [2020-11-11 23:57:52,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 23:57:52,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:52,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 23:57:52,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:57:52,057 INFO L87 Difference]: Start difference. First operand has 274 states, 272 states have (on average 3.0661764705882355) internal successors, (834), 273 states have internal predecessors, (834), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:52,088 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-11 23:57:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 23:57:52,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2020-11-11 23:57:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:52,106 INFO L225 Difference]: With dead ends: 274 [2020-11-11 23:57:52,106 INFO L226 Difference]: Without dead ends: 226 [2020-11-11 23:57:52,108 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:57:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-11 23:57:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-11 23:57:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8177777777777777) internal successors, (634), 225 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-11 23:57:52,178 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-11 23:57:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:52,179 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-11 23:57:52,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-11 23:57:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:57:52,181 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:52,181 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:52,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:57:52,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -930432044, now seen corresponding path program 1 times [2020-11-11 23:57:52,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:52,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242836956] [2020-11-11 23:57:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:52,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242836956] [2020-11-11 23:57:52,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:52,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:57:52,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696512589] [2020-11-11 23:57:52,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:57:52,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:52,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:57:52,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:57:52,321 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:52,391 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-11-11 23:57:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:52,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-11 23:57:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:52,401 INFO L225 Difference]: With dead ends: 262 [2020-11-11 23:57:52,401 INFO L226 Difference]: Without dead ends: 214 [2020-11-11 23:57:52,404 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-11 23:57:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-11-11 23:57:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.7699530516431925) internal successors, (590), 213 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-11-11 23:57:52,445 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-11-11 23:57:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:52,448 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-11-11 23:57:52,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,449 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-11-11 23:57:52,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:57:52,450 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:52,451 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:52,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:57:52,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:52,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1221326568, now seen corresponding path program 1 times [2020-11-11 23:57:52,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:52,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486760468] [2020-11-11 23:57:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:52,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486760468] [2020-11-11 23:57:52,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:52,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:57:52,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549986726] [2020-11-11 23:57:52,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:57:52,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:57:52,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:57:52,567 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:52,605 INFO L93 Difference]: Finished difference Result 244 states and 640 transitions. [2020-11-11 23:57:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2020-11-11 23:57:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:52,611 INFO L225 Difference]: With dead ends: 244 [2020-11-11 23:57:52,611 INFO L226 Difference]: Without dead ends: 202 [2020-11-11 23:57:52,612 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-11 23:57:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-11 23:57:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.716417910447761) internal successors, (546), 201 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 546 transitions. [2020-11-11 23:57:52,650 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 546 transitions. Word has length 10 [2020-11-11 23:57:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:52,651 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 546 transitions. [2020-11-11 23:57:52,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 546 transitions. [2020-11-11 23:57:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:57:52,654 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:52,654 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:52,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:57:52,654 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash -433221678, now seen corresponding path program 1 times [2020-11-11 23:57:52,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:52,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383785261] [2020-11-11 23:57:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:52,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383785261] [2020-11-11 23:57:52,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:52,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:57:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125794907] [2020-11-11 23:57:52,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:57:52,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:52,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:57:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:57:52,789 INFO L87 Difference]: Start difference. First operand 202 states and 546 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:52,832 INFO L93 Difference]: Finished difference Result 218 states and 566 transitions. [2020-11-11 23:57:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2020-11-11 23:57:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:52,836 INFO L225 Difference]: With dead ends: 218 [2020-11-11 23:57:52,841 INFO L226 Difference]: Without dead ends: 186 [2020-11-11 23:57:52,841 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-11 23:57:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-11-11 23:57:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.67027027027027) internal successors, (494), 185 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 494 transitions. [2020-11-11 23:57:52,864 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 494 transitions. Word has length 11 [2020-11-11 23:57:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:52,865 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 494 transitions. [2020-11-11 23:57:52,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 494 transitions. [2020-11-11 23:57:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:57:52,867 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:52,867 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:52,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:57:52,870 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:52,871 INFO L82 PathProgramCache]: Analyzing trace with hash -578029698, now seen corresponding path program 1 times [2020-11-11 23:57:52,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:52,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938710045] [2020-11-11 23:57:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:53,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938710045] [2020-11-11 23:57:53,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:53,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:57:53,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754763803] [2020-11-11 23:57:53,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:57:53,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:57:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:57:53,036 INFO L87 Difference]: Start difference. First operand 186 states and 494 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:53,078 INFO L93 Difference]: Finished difference Result 202 states and 488 transitions. [2020-11-11 23:57:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:53,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2020-11-11 23:57:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:53,081 INFO L225 Difference]: With dead ends: 202 [2020-11-11 23:57:53,081 INFO L226 Difference]: Without dead ends: 154 [2020-11-11 23:57:53,081 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-11 23:57:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-11 23:57:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.392156862745098) internal successors, (366), 153 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 366 transitions. [2020-11-11 23:57:53,090 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 366 transitions. Word has length 12 [2020-11-11 23:57:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:53,091 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 366 transitions. [2020-11-11 23:57:53,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 366 transitions. [2020-11-11 23:57:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:57:53,097 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:53,097 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:53,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:57:53,097 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:53,098 INFO L82 PathProgramCache]: Analyzing trace with hash -734246661, now seen corresponding path program 1 times [2020-11-11 23:57:53,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:53,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111653035] [2020-11-11 23:57:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:53,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111653035] [2020-11-11 23:57:53,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:53,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:57:53,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51467241] [2020-11-11 23:57:53,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:57:53,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:53,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:57:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:53,244 INFO L87 Difference]: Start difference. First operand 154 states and 366 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:53,301 INFO L93 Difference]: Finished difference Result 137 states and 296 transitions. [2020-11-11 23:57:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:57:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2020-11-11 23:57:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:53,307 INFO L225 Difference]: With dead ends: 137 [2020-11-11 23:57:53,307 INFO L226 Difference]: Without dead ends: 107 [2020-11-11 23:57:53,308 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:57:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-11 23:57:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-11 23:57:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.1226415094339623) internal successors, (225), 106 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 225 transitions. [2020-11-11 23:57:53,315 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 225 transitions. Word has length 13 [2020-11-11 23:57:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:53,315 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 225 transitions. [2020-11-11 23:57:53,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,315 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 225 transitions. [2020-11-11 23:57:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:57:53,320 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:53,320 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:53,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:57:53,320 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1335502166, now seen corresponding path program 1 times [2020-11-11 23:57:53,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:53,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233271909] [2020-11-11 23:57:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:53,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233271909] [2020-11-11 23:57:53,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:53,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:57:53,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048823490] [2020-11-11 23:57:53,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:57:53,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:57:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:57:53,382 INFO L87 Difference]: Start difference. First operand 107 states and 225 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:53,409 INFO L93 Difference]: Finished difference Result 143 states and 284 transitions. [2020-11-11 23:57:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:53,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2020-11-11 23:57:53,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:53,411 INFO L225 Difference]: With dead ends: 143 [2020-11-11 23:57:53,411 INFO L226 Difference]: Without dead ends: 109 [2020-11-11 23:57:53,412 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-11 23:57:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-11-11 23:57:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 104 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 211 transitions. [2020-11-11 23:57:53,417 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 211 transitions. Word has length 14 [2020-11-11 23:57:53,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:53,417 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 211 transitions. [2020-11-11 23:57:53,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,418 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 211 transitions. [2020-11-11 23:57:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:57:53,418 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:53,419 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:53,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:57:53,419 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:53,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1917666405, now seen corresponding path program 1 times [2020-11-11 23:57:53,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:53,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216083302] [2020-11-11 23:57:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:53,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216083302] [2020-11-11 23:57:53,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:53,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:57:53,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342507784] [2020-11-11 23:57:53,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:57:53,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:53,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:57:53,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:57:53,465 INFO L87 Difference]: Start difference. First operand 105 states and 211 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:53,513 INFO L93 Difference]: Finished difference Result 145 states and 273 transitions. [2020-11-11 23:57:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2020-11-11 23:57:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:53,514 INFO L225 Difference]: With dead ends: 145 [2020-11-11 23:57:53,514 INFO L226 Difference]: Without dead ends: 99 [2020-11-11 23:57:53,515 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-11 23:57:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-11-11 23:57:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.8297872340425532) internal successors, (172), 94 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 172 transitions. [2020-11-11 23:57:53,519 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 172 transitions. Word has length 15 [2020-11-11 23:57:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:53,520 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 172 transitions. [2020-11-11 23:57:53,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 172 transitions. [2020-11-11 23:57:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:57:53,521 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:53,521 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:53,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:57:53,521 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:53,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1549054674, now seen corresponding path program 1 times [2020-11-11 23:57:53,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:53,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647800441] [2020-11-11 23:57:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:53,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647800441] [2020-11-11 23:57:53,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:53,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-11 23:57:53,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519130201] [2020-11-11 23:57:53,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:57:53,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:53,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:57:53,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:57:53,620 INFO L87 Difference]: Start difference. First operand 95 states and 172 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:53,690 INFO L93 Difference]: Finished difference Result 86 states and 152 transitions. [2020-11-11 23:57:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:57:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2020-11-11 23:57:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:53,691 INFO L225 Difference]: With dead ends: 86 [2020-11-11 23:57:53,691 INFO L226 Difference]: Without dead ends: 27 [2020-11-11 23:57:53,692 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:57:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-11 23:57:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-11 23:57:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-11 23:57:53,695 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15 [2020-11-11 23:57:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:53,695 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-11 23:57:53,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-11 23:57:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-11 23:57:53,696 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:57:53,696 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:57:53,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:57:53,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:57:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:57:53,697 INFO L82 PathProgramCache]: Analyzing trace with hash 535765290, now seen corresponding path program 1 times [2020-11-11 23:57:53,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:57:53,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566539396] [2020-11-11 23:57:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:57:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:57:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:57:53,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566539396] [2020-11-11 23:57:53,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:57:53,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:57:53,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839445848] [2020-11-11 23:57:53,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:57:53,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:57:53,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:57:53,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:57:53,793 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:57:53,823 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2020-11-11 23:57:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:57:53,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2020-11-11 23:57:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:57:53,824 INFO L225 Difference]: With dead ends: 26 [2020-11-11 23:57:53,824 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:57:53,825 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:57:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:57:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:57:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:57:53,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-11 23:57:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:57:53,826 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:57:53,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:57:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:57:53,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:57:53,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 23:57:53,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:57:53 BasicIcfg [2020-11-11 23:57:53,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:57:53,836 INFO L168 Benchmark]: Toolchain (without parser) took 8363.84 ms. Allocated memory was 302.0 MB in the beginning and 388.0 MB in the end (delta: 86.0 MB). Free memory was 274.9 MB in the beginning and 331.5 MB in the end (delta: -56.5 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.0 GB. [2020-11-11 23:57:53,837 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:57:53,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.38 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 274.2 MB in the end (delta: 10.4 kB). Peak memory consumption was 28.8 MB. Max. memory is 16.0 GB. [2020-11-11 23:57:53,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.50 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 272.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:57:53,844 INFO L168 Benchmark]: Boogie Preprocessor took 30.64 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 271.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:57:53,845 INFO L168 Benchmark]: RCFGBuilder took 599.18 ms. Allocated memory is still 302.0 MB. Free memory was 271.1 MB in the beginning and 249.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:57:53,846 INFO L168 Benchmark]: TraceAbstraction took 6896.59 ms. Allocated memory was 302.0 MB in the beginning and 388.0 MB in the end (delta: 86.0 MB). Free memory was 248.0 MB in the beginning and 331.5 MB in the end (delta: -83.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:57:53,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 770.38 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 274.2 MB in the end (delta: 10.4 kB). Peak memory consumption was 28.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.50 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 272.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.64 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 271.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 599.18 ms. Allocated memory is still 302.0 MB. Free memory was 271.1 MB in the beginning and 249.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6896.59 ms. Allocated memory was 302.0 MB in the beginning and 388.0 MB in the end (delta: 86.0 MB). Free memory was 248.0 MB in the beginning and 331.5 MB in the end (delta: -83.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 897 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 50 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 2279 MoverChecksTotal - 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 211 SDtfs, 162 SDslu, 290 SDs, 0 SdLazy, 132 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...