/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:52:52,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:52:52,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:52:52,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:52:52,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:52:52,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:52:52,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:52:52,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:52:52,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:52:52,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:52:52,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:52:52,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:52:52,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:52:52,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:52:52,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:52:52,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:52:52,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:52:52,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:52:52,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:52:52,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:52:52,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:52:52,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:52:52,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:52:52,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:52:52,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:52:52,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:52:52,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:52:52,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:52:52,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:52:52,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:52:52,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:52:52,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:52:52,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:52:52,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:52:52,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:52:52,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:52:52,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:52:52,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:52:52,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:52:52,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:52:52,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:52:52,205 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 23:52:52,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:52:52,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:52:52,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:52:52,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:52:52,262 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:52:52,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:52:52,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:52:52,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:52:52,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:52:52,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:52:52,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:52:52,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:52:52,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:52:52,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:52:52,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:52:52,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:52:52,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:52:52,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:52:52,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:52:52,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:52:52,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:52:52,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:52:52,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:52:52,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:52:52,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:52:52,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:52:52,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:52:52,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:52:52,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:52:52,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:52:52,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:52:52,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:52:52,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:52:52,699 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:52:52,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-11-11 23:52:52,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1424a6a7f/4ad20be6188e41028f838128c42ca7a3/FLAGc115e213a [2020-11-11 23:52:53,597 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:52:53,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-11-11 23:52:53,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1424a6a7f/4ad20be6188e41028f838128c42ca7a3/FLAGc115e213a [2020-11-11 23:52:53,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1424a6a7f/4ad20be6188e41028f838128c42ca7a3 [2020-11-11 23:52:53,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:52:53,877 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:52:53,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:52:53,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:52:53,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:52:53,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:52:53" (1/1) ... [2020-11-11 23:52:53,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c3f723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:53, skipping insertion in model container [2020-11-11 23:52:53,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:52:53" (1/1) ... [2020-11-11 23:52:53,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:52:53,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:52:54,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:52:54,370 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:52:54,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:52:54,573 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:52:54,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54 WrapperNode [2020-11-11 23:52:54,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:52:54,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:52:54,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:52:54,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:52:54,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:52:54,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:52:54,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:52:54,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:52:54,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (1/1) ... [2020-11-11 23:52:54,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:52:54,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:52:54,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:52:54,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:52:54,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (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 23:52:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:52:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:52:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:52:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:52:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:52:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:52:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:52:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:52:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:52:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:52:54,723 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 23:52:55,210 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:52:55,210 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:52:55,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:52:55 BoogieIcfgContainer [2020-11-11 23:52:55,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:52:55,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:52:55,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:52:55,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:52:55,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:52:53" (1/3) ... [2020-11-11 23:52:55,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f681df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:52:55, skipping insertion in model container [2020-11-11 23:52:55,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:52:54" (2/3) ... [2020-11-11 23:52:55,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f681df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:52:55, skipping insertion in model container [2020-11-11 23:52:55,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:52:55" (3/3) ... [2020-11-11 23:52:55,222 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-11-11 23:52:55,238 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:52:55,238 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:52:55,242 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:52:55,243 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:52:55,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,280 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,285 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,285 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,301 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:52:55,305 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:52:55,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:52:55,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:52:55,344 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:52:55,344 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:52:55,344 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:52:55,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:52:55,345 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:52:55,345 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:52:55,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:52:55,357 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:52:55,360 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:52:55,363 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:52:55,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 23:52:55,410 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-11 23:52:55,410 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:52:55,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:52:55,418 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:52:58,154 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:52:58,352 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:52:58,928 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:52:59,042 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:52:59,280 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:52:59,410 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:52:59,558 INFO L131 LiptonReduction]: Checked pairs total: 2870 [2020-11-11 23:52:59,559 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-11 23:52:59,565 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-11 23:52:59,601 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 23:52:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 23:52:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:52:59,612 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:52:59,613 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:52:59,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:52:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:52:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2120671033, now seen corresponding path program 1 times [2020-11-11 23:52:59,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:52:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456229467] [2020-11-11 23:52:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:52:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:52:59,822 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 23:52:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456229467] [2020-11-11 23:52:59,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:52:59,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:52:59,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035244079] [2020-11-11 23:52:59,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 23:52:59,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:52:59,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 23:52:59,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:52:59,855 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 23:52:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:52:59,904 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-11 23:52:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 23:52:59,906 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 23:52:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:52:59,935 INFO L225 Difference]: With dead ends: 362 [2020-11-11 23:52:59,936 INFO L226 Difference]: Without dead ends: 298 [2020-11-11 23:52:59,937 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 23:52:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-11 23:53:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-11 23:53:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 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 23:53:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-11 23:53:00,069 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-11 23:53:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:00,071 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-11 23:53:00,071 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 23:53:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-11 23:53:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:53:00,074 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:00,074 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:00,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:53:00,075 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:00,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:00,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1316261025, now seen corresponding path program 1 times [2020-11-11 23:53:00,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:00,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784626048] [2020-11-11 23:53:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:00,291 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 23:53:00,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784626048] [2020-11-11 23:53:00,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:00,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:53:00,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179852684] [2020-11-11 23:53:00,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:00,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:00,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:00,298 INFO L87 Difference]: Start difference. First operand 298 states and 864 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 23:53:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:00,354 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-11 23:53:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:00,357 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 23:53:00,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:00,360 INFO L225 Difference]: With dead ends: 330 [2020-11-11 23:53:00,360 INFO L226 Difference]: Without dead ends: 266 [2020-11-11 23:53:00,361 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 23:53:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-11 23:53:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-11 23:53:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 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 23:53:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-11 23:53:00,378 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-11 23:53:00,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:00,379 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-11 23:53:00,379 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 23:53:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-11 23:53:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:53:00,381 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:00,381 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:00,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:53:00,381 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:00,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:00,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1018022108, now seen corresponding path program 1 times [2020-11-11 23:53:00,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:00,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744396627] [2020-11-11 23:53:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:00,449 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 23:53:00,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744396627] [2020-11-11 23:53:00,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:00,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:00,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923685441] [2020-11-11 23:53:00,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:00,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:00,452 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 23:53:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:00,521 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-11 23:53:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:53:00,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 23:53:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:00,526 INFO L225 Difference]: With dead ends: 290 [2020-11-11 23:53:00,526 INFO L226 Difference]: Without dead ends: 242 [2020-11-11 23:53:00,527 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:53:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-11 23:53:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-11 23:53:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.780082987551867) internal successors, (670), 241 states have internal predecessors, (670), 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 23:53:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-11 23:53:00,551 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-11 23:53:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:00,552 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-11 23:53:00,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 23:53:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-11 23:53:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:53:00,554 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:00,554 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:00,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:53:00,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1615070613, now seen corresponding path program 1 times [2020-11-11 23:53:00,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:00,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405230059] [2020-11-11 23:53:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:00,677 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 23:53:00,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405230059] [2020-11-11 23:53:00,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:00,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:53:00,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604516479] [2020-11-11 23:53:00,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:00,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:00,680 INFO L87 Difference]: Start difference. First operand 242 states and 670 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 23:53:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:00,707 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-11 23:53:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:00,707 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 23:53:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:00,709 INFO L225 Difference]: With dead ends: 260 [2020-11-11 23:53:00,709 INFO L226 Difference]: Without dead ends: 224 [2020-11-11 23:53:00,710 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 23:53:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-11 23:53:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-11 23:53:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.7354260089686098) internal successors, (610), 223 states have internal predecessors, (610), 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 23:53:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-11 23:53:00,720 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-11 23:53:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:00,720 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-11 23:53:00,720 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 23:53:00,720 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-11 23:53:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:53:00,722 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:00,722 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:00,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:53:00,722 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1472189025, now seen corresponding path program 1 times [2020-11-11 23:53:00,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:00,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987278890] [2020-11-11 23:53:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:00,800 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 23:53:00,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987278890] [2020-11-11 23:53:00,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:00,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:00,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598649818] [2020-11-11 23:53:00,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:00,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:00,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:00,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:00,802 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 23:53:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:00,862 INFO L93 Difference]: Finished difference Result 332 states and 880 transitions. [2020-11-11 23:53:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 23:53:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 23:53:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:00,865 INFO L225 Difference]: With dead ends: 332 [2020-11-11 23:53:00,865 INFO L226 Difference]: Without dead ends: 206 [2020-11-11 23:53:00,865 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:53:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-11 23:53:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-11-11 23:53:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.6439024390243904) internal successors, (542), 205 states have internal predecessors, (542), 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 23:53:00,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 542 transitions. [2020-11-11 23:53:00,874 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 542 transitions. Word has length 12 [2020-11-11 23:53:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:00,874 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 542 transitions. [2020-11-11 23:53:00,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 23:53:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 542 transitions. [2020-11-11 23:53:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:53:00,876 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:00,876 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:00,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:53:00,877 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash 524818693, now seen corresponding path program 1 times [2020-11-11 23:53:00,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:00,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361928109] [2020-11-11 23:53:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:00,968 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 23:53:00,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361928109] [2020-11-11 23:53:00,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:00,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:00,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189084385] [2020-11-11 23:53:00,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:00,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:00,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:00,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:00,970 INFO L87 Difference]: Start difference. First operand 206 states and 542 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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 23:53:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,009 INFO L93 Difference]: Finished difference Result 260 states and 671 transitions. [2020-11-11 23:53:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:53:01,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 23:53:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,011 INFO L225 Difference]: With dead ends: 260 [2020-11-11 23:53:01,011 INFO L226 Difference]: Without dead ends: 116 [2020-11-11 23:53:01,011 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 23:53:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-11 23:53:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-11 23:53:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.4) internal successors, (276), 115 states have internal predecessors, (276), 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 23:53:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 276 transitions. [2020-11-11 23:53:01,017 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 276 transitions. Word has length 13 [2020-11-11 23:53:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,017 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 276 transitions. [2020-11-11 23:53:01,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) 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 23:53:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 276 transitions. [2020-11-11 23:53:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:53:01,018 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:01,018 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:01,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:53:01,018 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:01,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2065671095, now seen corresponding path program 1 times [2020-11-11 23:53:01,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:01,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753703712] [2020-11-11 23:53:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:01,083 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 23:53:01,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753703712] [2020-11-11 23:53:01,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:01,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:01,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778198175] [2020-11-11 23:53:01,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:01,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:01,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:01,086 INFO L87 Difference]: Start difference. First operand 116 states and 276 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 23:53:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,137 INFO L93 Difference]: Finished difference Result 137 states and 299 transitions. [2020-11-11 23:53:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 23:53:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,140 INFO L225 Difference]: With dead ends: 137 [2020-11-11 23:53:01,140 INFO L226 Difference]: Without dead ends: 97 [2020-11-11 23:53:01,140 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 23:53:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-11 23:53:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-11 23:53:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.15625) internal successors, (207), 96 states have internal predecessors, (207), 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 23:53:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 207 transitions. [2020-11-11 23:53:01,145 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 207 transitions. Word has length 14 [2020-11-11 23:53:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,146 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 207 transitions. [2020-11-11 23:53:01,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 23:53:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 207 transitions. [2020-11-11 23:53:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:53:01,147 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:01,147 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:01,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:53:01,147 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:01,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1543325536, now seen corresponding path program 1 times [2020-11-11 23:53:01,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:01,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466823711] [2020-11-11 23:53:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:01,270 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 23:53:01,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466823711] [2020-11-11 23:53:01,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:01,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:01,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154308426] [2020-11-11 23:53:01,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:01,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:01,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:01,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:01,272 INFO L87 Difference]: Start difference. First operand 97 states and 207 transitions. Second operand has 5 states, 5 states have (on average 3.0) 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 23:53:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,331 INFO L93 Difference]: Finished difference Result 95 states and 184 transitions. [2020-11-11 23:53:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:53:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) 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 23:53:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,336 INFO L225 Difference]: With dead ends: 95 [2020-11-11 23:53:01,336 INFO L226 Difference]: Without dead ends: 70 [2020-11-11 23:53:01,336 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 23:53:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-11 23:53:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-11 23:53:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 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 23:53:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2020-11-11 23:53:01,340 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 15 [2020-11-11 23:53:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,341 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2020-11-11 23:53:01,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) 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 23:53:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2020-11-11 23:53:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-11 23:53:01,342 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:01,342 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:01,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:53:01,342 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:01,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -598174437, now seen corresponding path program 1 times [2020-11-11 23:53:01,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:01,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649551293] [2020-11-11 23:53:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:01,454 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 23:53:01,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649551293] [2020-11-11 23:53:01,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:01,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-11 23:53:01,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226519768] [2020-11-11 23:53:01,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:53:01,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:01,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:53:01,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:53:01,457 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 23:53:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,503 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-11 23:53:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:53:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2020-11-11 23:53:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,504 INFO L225 Difference]: With dead ends: 63 [2020-11-11 23:53:01,504 INFO L226 Difference]: Without dead ends: 55 [2020-11-11 23:53:01,505 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 23:53:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-11 23:53:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-11 23:53:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 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 23:53:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-11-11 23:53:01,508 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 16 [2020-11-11 23:53:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,509 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-11-11 23:53:01,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 23:53:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-11-11 23:53:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-11 23:53:01,509 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:01,510 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:01,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:53:01,510 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:01,510 INFO L82 PathProgramCache]: Analyzing trace with hash 630901748, now seen corresponding path program 1 times [2020-11-11 23:53:01,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:01,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000500030] [2020-11-11 23:53:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:01,552 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 23:53:01,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000500030] [2020-11-11 23:53:01,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:01,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:01,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778770070] [2020-11-11 23:53:01,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:01,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:01,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:01,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:01,555 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 23:53:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,589 INFO L93 Difference]: Finished difference Result 65 states and 112 transitions. [2020-11-11 23:53:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:01,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2020-11-11 23:53:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,590 INFO L225 Difference]: With dead ends: 65 [2020-11-11 23:53:01,590 INFO L226 Difference]: Without dead ends: 36 [2020-11-11 23:53:01,591 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:53:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-11 23:53:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-11 23:53:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 23:53:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2020-11-11 23:53:01,593 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 18 [2020-11-11 23:53:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,593 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2020-11-11 23:53:01,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 23:53:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2020-11-11 23:53:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-11 23:53:01,594 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:01,594 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:01,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 23:53:01,594 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash 996855826, now seen corresponding path program 2 times [2020-11-11 23:53:01,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:01,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698053774] [2020-11-11 23:53:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:01,639 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 23:53:01,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698053774] [2020-11-11 23:53:01,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:01,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:01,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835503156] [2020-11-11 23:53:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:01,641 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 23:53:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,671 INFO L93 Difference]: Finished difference Result 50 states and 79 transitions. [2020-11-11 23:53:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:53:01,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2020-11-11 23:53:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,673 INFO L225 Difference]: With dead ends: 50 [2020-11-11 23:53:01,673 INFO L226 Difference]: Without dead ends: 31 [2020-11-11 23:53:01,674 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 23:53:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-11 23:53:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-11 23:53:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-11 23:53:01,676 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-11 23:53:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,677 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-11 23:53:01,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 23:53:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-11 23:53:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-11 23:53:01,677 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:01,678 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:01,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-11 23:53:01,678 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:01,678 INFO L82 PathProgramCache]: Analyzing trace with hash 664387820, now seen corresponding path program 3 times [2020-11-11 23:53:01,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:01,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997902680] [2020-11-11 23:53:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:01,731 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 23:53:01,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997902680] [2020-11-11 23:53:01,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:01,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:01,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014402363] [2020-11-11 23:53:01,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:01,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:01,733 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 23:53:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:01,755 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-11 23:53:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2020-11-11 23:53:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:01,756 INFO L225 Difference]: With dead ends: 30 [2020-11-11 23:53:01,756 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:53:01,757 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 23:53:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:53:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:53:01,757 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 23:53:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:53:01,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-11 23:53:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:01,758 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:53:01,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 23:53:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:53:01,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:53:01,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-11 23:53:01,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:53:01 BasicIcfg [2020-11-11 23:53:01,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:53:01,764 INFO L168 Benchmark]: Toolchain (without parser) took 7891.75 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 276.8 MB in the beginning and 205.1 MB in the end (delta: 71.6 MB). Peak memory consumption was 138.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:01,764 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:53:01,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.40 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 277.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:01,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 302.0 MB. Free memory was 277.4 MB in the beginning and 275.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:01,766 INFO L168 Benchmark]: Boogie Preprocessor took 26.49 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 274.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:01,767 INFO L168 Benchmark]: RCFGBuilder took 562.75 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 251.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:01,768 INFO L168 Benchmark]: TraceAbstraction took 6547.89 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 250.1 MB in the beginning and 205.1 MB in the end (delta: 45.0 MB). Peak memory consumption was 111.0 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:01,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 695.40 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 277.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 302.0 MB. Free memory was 277.4 MB in the beginning and 275.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.49 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 274.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 562.75 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 251.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6547.89 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 250.1 MB in the beginning and 205.1 MB in the end (delta: 45.0 MB). Peak memory consumption was 111.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 995 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2870 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 259 SDtfs, 248 SDslu, 462 SDs, 0 SdLazy, 200 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 5878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...