/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:11:18,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:11:18,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:11:18,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 22:11:18,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 22:11:18,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 22:11:18,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 22:11:18,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 22:11:18,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 22:11:18,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 22:11:18,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 22:11:18,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 22:11:18,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:11:18,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:11:18,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:11:18,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:11:18,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:11:18,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:11:18,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:11:18,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:11:18,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:11:18,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:11:18,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:11:18,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:11:18,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 22:11:18,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 22:11:18,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 22:11:18,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 22:11:18,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 22:11:18,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 22:11:18,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 22:11:18,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 22:11:18,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 22:11:18,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 22:11:18,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 22:11:18,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 22:11:18,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 22:11:18,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 22:11:18,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 22:11:18,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 22:11:18,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 22:11:18,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-09 22:11:18,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:11:18,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:11:18,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:11:18,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:11:18,352 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:11:18,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:11:18,353 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:11:18,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:11:18,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:11:18,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:11:18,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:11:18,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:11:18,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:11:18,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:11:18,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:11:18,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:11:18,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:11:18,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:11:18,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:11:18,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:11:18,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:11:18,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:11:18,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:11:18,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:11:18,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:11:18,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:11:18,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:11:18,357 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:11:18,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:11:18,357 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:11:18,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:11:18,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:11:18,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:11:18,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:11:18,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 22:11:18,652 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 22:11:18,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-07-09 22:11:18,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff944e5e/e409cff9c9374c0b9e030e4b37ad7a92/FLAGcdb46f9ee [2021-07-09 22:11:19,242 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 22:11:19,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-07-09 22:11:19,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff944e5e/e409cff9c9374c0b9e030e4b37ad7a92/FLAGcdb46f9ee [2021-07-09 22:11:19,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff944e5e/e409cff9c9374c0b9e030e4b37ad7a92 [2021-07-09 22:11:19,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:11:19,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 22:11:19,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 22:11:19,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 22:11:19,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 22:11:19,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:11:19" (1/1) ... [2021-07-09 22:11:19,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d74b378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:19, skipping insertion in model container [2021-07-09 22:11:19,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:11:19" (1/1) ... [2021-07-09 22:11:19,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 22:11:19,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 22:11:19,932 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i[949,962] [2021-07-09 22:11:20,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:11:20,101 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 22:11:20,112 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i[949,962] [2021-07-09 22:11:20,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:11:20,175 INFO L208 MainTranslator]: Completed translation [2021-07-09 22:11:20,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20 WrapperNode [2021-07-09 22:11:20,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 22:11:20,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:11:20,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:11:20,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:11:20,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:11:20,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:11:20,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:11:20,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:11:20,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... [2021-07-09 22:11:20,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:11:20,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:11:20,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:11:20,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:11:20,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:11:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 22:11:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 22:11:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 22:11:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 22:11:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 22:11:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 22:11:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 22:11:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 22:11:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 22:11:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 22:11:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 22:11:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 22:11:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:11:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:11:20,332 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 22:11:20,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:11:20,752 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 22:11:20,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:11:20 BoogieIcfgContainer [2021-07-09 22:11:20,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:11:20,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:11:20,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:11:20,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:11:20,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 10:11:19" (1/3) ... [2021-07-09 22:11:20,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6b7b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:11:20, skipping insertion in model container [2021-07-09 22:11:20,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:11:20" (2/3) ... [2021-07-09 22:11:20,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6b7b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:11:20, skipping insertion in model container [2021-07-09 22:11:20,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:11:20" (3/3) ... [2021-07-09 22:11:20,760 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2021-07-09 22:11:20,766 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:11:20,766 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:11:20,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:11:20,767 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:11:20,803 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,803 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,803 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,803 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,803 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,815 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,815 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,817 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,820 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:11:20,833 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 22:11:20,854 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 22:11:20,881 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:11:20,881 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:11:20,881 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:11:20,881 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:11:20,881 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:11:20,882 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:11:20,882 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:11:20,882 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:11:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-09 22:11:21,479 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:21,479 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:21,480 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:21,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:21,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1924556435, now seen corresponding path program 1 times [2021-07-09 22:11:21,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:21,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78946984] [2021-07-09 22:11:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:21,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:21,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:21,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:21,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:21,794 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:11:21,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:11:21,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:21,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:21,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:21,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:21,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:21,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:21,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:21,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78946984] [2021-07-09 22:11:21,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78946984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:21,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:21,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:11:21,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019555032] [2021-07-09 22:11:21,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:11:21,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:21,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:11:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:11:21,864 INFO L87 Difference]: Start difference. First operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:22,069 INFO L93 Difference]: Finished difference Result 5447 states and 9250 transitions. [2021-07-09 22:11:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:11:22,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-09 22:11:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:22,109 INFO L225 Difference]: With dead ends: 5447 [2021-07-09 22:11:22,110 INFO L226 Difference]: Without dead ends: 2048 [2021-07-09 22:11:22,111 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:11:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-07-09 22:11:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2048. [2021-07-09 22:11:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2018 states have (on average 2.1337958374628343) internal successors, (4306), 2047 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 4306 transitions. [2021-07-09 22:11:22,264 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 4306 transitions. Word has length 49 [2021-07-09 22:11:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:22,267 INFO L482 AbstractCegarLoop]: Abstraction has 2048 states and 4306 transitions. [2021-07-09 22:11:22,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 4306 transitions. [2021-07-09 22:11:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-09 22:11:22,271 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:22,272 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:22,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:11:22,272 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:22,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:22,276 INFO L82 PathProgramCache]: Analyzing trace with hash 932867412, now seen corresponding path program 1 times [2021-07-09 22:11:22,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:22,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271250891] [2021-07-09 22:11:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:22,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:22,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:22,359 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:11:22,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:11:22,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:22,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:22,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:22,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:22,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271250891] [2021-07-09 22:11:22,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271250891] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:22,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:22,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:11:22,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890730163] [2021-07-09 22:11:22,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:11:22,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:11:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:11:22,398 INFO L87 Difference]: Start difference. First operand 2048 states and 4306 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:22,569 INFO L93 Difference]: Finished difference Result 2288 states and 5068 transitions. [2021-07-09 22:11:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:11:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2021-07-09 22:11:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:22,579 INFO L225 Difference]: With dead ends: 2288 [2021-07-09 22:11:22,580 INFO L226 Difference]: Without dead ends: 1688 [2021-07-09 22:11:22,581 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:11:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-07-09 22:11:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2021-07-09 22:11:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1658 states have (on average 2.209891435464415) internal successors, (3664), 1687 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3664 transitions. [2021-07-09 22:11:22,624 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3664 transitions. Word has length 51 [2021-07-09 22:11:22,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:22,625 INFO L482 AbstractCegarLoop]: Abstraction has 1688 states and 3664 transitions. [2021-07-09 22:11:22,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3664 transitions. [2021-07-09 22:11:22,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 22:11:22,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:22,630 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:22,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 22:11:22,631 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:22,638 INFO L82 PathProgramCache]: Analyzing trace with hash 271139125, now seen corresponding path program 1 times [2021-07-09 22:11:22,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:22,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760703589] [2021-07-09 22:11:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:22,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:22,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:22,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:22,724 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:11:22,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:11:22,736 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:11:22,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:11:22,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:22,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:22,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:22,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:22,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:22,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760703589] [2021-07-09 22:11:22,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760703589] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:22,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:22,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:11:22,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800534888] [2021-07-09 22:11:22,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:11:22,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:11:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:11:22,783 INFO L87 Difference]: Start difference. First operand 1688 states and 3664 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:22,942 INFO L93 Difference]: Finished difference Result 2228 states and 4876 transitions. [2021-07-09 22:11:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:11:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2021-07-09 22:11:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:22,947 INFO L225 Difference]: With dead ends: 2228 [2021-07-09 22:11:22,948 INFO L226 Difference]: Without dead ends: 968 [2021-07-09 22:11:22,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:11:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-07-09 22:11:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-07-09 22:11:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 938 states have (on average 2.192963752665245) internal successors, (2057), 967 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2057 transitions. [2021-07-09 22:11:22,971 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2057 transitions. Word has length 53 [2021-07-09 22:11:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:22,971 INFO L482 AbstractCegarLoop]: Abstraction has 968 states and 2057 transitions. [2021-07-09 22:11:22,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2057 transitions. [2021-07-09 22:11:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 22:11:22,973 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:22,973 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:22,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 22:11:22,973 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash -200732444, now seen corresponding path program 1 times [2021-07-09 22:11:22,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:22,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319745112] [2021-07-09 22:11:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:23,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,034 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:11:23,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:11:23,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:23,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:23,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:23,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:23,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319745112] [2021-07-09 22:11:23,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319745112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:23,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:23,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:11:23,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144810741] [2021-07-09 22:11:23,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:11:23,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:23,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:11:23,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:11:23,079 INFO L87 Difference]: Start difference. First operand 968 states and 2057 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:23,258 INFO L93 Difference]: Finished difference Result 1356 states and 3024 transitions. [2021-07-09 22:11:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:11:23,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 22:11:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:23,262 INFO L225 Difference]: With dead ends: 1356 [2021-07-09 22:11:23,262 INFO L226 Difference]: Without dead ends: 672 [2021-07-09 22:11:23,263 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-09 22:11:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-07-09 22:11:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-07-09 22:11:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 652 states have (on average 2.26840490797546) internal successors, (1479), 671 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1479 transitions. [2021-07-09 22:11:23,280 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1479 transitions. Word has length 54 [2021-07-09 22:11:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:23,280 INFO L482 AbstractCegarLoop]: Abstraction has 672 states and 1479 transitions. [2021-07-09 22:11:23,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1479 transitions. [2021-07-09 22:11:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-09 22:11:23,283 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:23,283 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:23,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 22:11:23,284 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1556691173, now seen corresponding path program 1 times [2021-07-09 22:11:23,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:23,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463136355] [2021-07-09 22:11:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:23,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,388 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:11:23,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:11:23,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:11:23,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:11:23,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:23,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:23,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:23,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463136355] [2021-07-09 22:11:23,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463136355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:23,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:23,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:11:23,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190896248] [2021-07-09 22:11:23,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:11:23,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:23,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:11:23,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:11:23,440 INFO L87 Difference]: Start difference. First operand 672 states and 1479 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:23,553 INFO L93 Difference]: Finished difference Result 851 states and 1853 transitions. [2021-07-09 22:11:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:11:23,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-07-09 22:11:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:23,557 INFO L225 Difference]: With dead ends: 851 [2021-07-09 22:11:23,557 INFO L226 Difference]: Without dead ends: 615 [2021-07-09 22:11:23,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:11:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-07-09 22:11:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-07-09 22:11:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 595 states have (on average 2.2890756302521007) internal successors, (1362), 614 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1362 transitions. [2021-07-09 22:11:23,571 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1362 transitions. Word has length 56 [2021-07-09 22:11:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:23,572 INFO L482 AbstractCegarLoop]: Abstraction has 615 states and 1362 transitions. [2021-07-09 22:11:23,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1362 transitions. [2021-07-09 22:11:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-09 22:11:23,574 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:23,574 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:23,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 22:11:23,574 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1955925407, now seen corresponding path program 1 times [2021-07-09 22:11:23,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:23,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550058974] [2021-07-09 22:11:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:23,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,669 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:11:23,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:11:23,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:11:23,703 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:11:23,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:23,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:23,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:23,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550058974] [2021-07-09 22:11:23,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550058974] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:23,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:23,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:11:23,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918790019] [2021-07-09 22:11:23,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:11:23,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:23,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:11:23,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:11:23,717 INFO L87 Difference]: Start difference. First operand 615 states and 1362 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-07-09 22:11:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:23,840 INFO L93 Difference]: Finished difference Result 630 states and 1350 transitions. [2021-07-09 22:11:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:11:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) Word has length 57 [2021-07-09 22:11:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:23,844 INFO L225 Difference]: With dead ends: 630 [2021-07-09 22:11:23,844 INFO L226 Difference]: Without dead ends: 428 [2021-07-09 22:11:23,847 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 22:11:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-07-09 22:11:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-07-09 22:11:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 410 states have (on average 2.2219512195121953) internal successors, (911), 427 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 911 transitions. [2021-07-09 22:11:23,856 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 911 transitions. Word has length 57 [2021-07-09 22:11:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:23,857 INFO L482 AbstractCegarLoop]: Abstraction has 428 states and 911 transitions. [2021-07-09 22:11:23,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-07-09 22:11:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 911 transitions. [2021-07-09 22:11:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 22:11:23,858 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:23,858 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:23,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 22:11:23,858 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:23,859 INFO L82 PathProgramCache]: Analyzing trace with hash -116961335, now seen corresponding path program 1 times [2021-07-09 22:11:23,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:23,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140053320] [2021-07-09 22:11:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:23,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:23,943 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:11:23,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:11:23,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:11:23,968 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:11:23,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:23,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:23,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:23,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:23,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140053320] [2021-07-09 22:11:23,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140053320] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:23,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:23,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:11:23,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673487118] [2021-07-09 22:11:23,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:11:23,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:23,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:11:23,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:11:23,980 INFO L87 Difference]: Start difference. First operand 428 states and 911 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:24,113 INFO L93 Difference]: Finished difference Result 320 states and 621 transitions. [2021-07-09 22:11:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 22:11:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2021-07-09 22:11:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:24,115 INFO L225 Difference]: With dead ends: 320 [2021-07-09 22:11:24,115 INFO L226 Difference]: Without dead ends: 203 [2021-07-09 22:11:24,115 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:11:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-07-09 22:11:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-07-09 22:11:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 194 states have (on average 1.7989690721649485) internal successors, (349), 202 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 349 transitions. [2021-07-09 22:11:24,120 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 349 transitions. Word has length 58 [2021-07-09 22:11:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:24,120 INFO L482 AbstractCegarLoop]: Abstraction has 203 states and 349 transitions. [2021-07-09 22:11:24,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 349 transitions. [2021-07-09 22:11:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 22:11:24,121 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:11:24,121 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:11:24,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 22:11:24,121 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:11:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:11:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash 546878090, now seen corresponding path program 1 times [2021-07-09 22:11:24,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:11:24,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656283612] [2021-07-09 22:11:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:11:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:11:24,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:24,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:24,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:24,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:11:24,166 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:11:24,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:11:24,174 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:11:24,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:11:24,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:24,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:24,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:24,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:11:24,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:11:24,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:11:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:11:24,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:11:24,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656283612] [2021-07-09 22:11:24,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656283612] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:11:24,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:11:24,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:11:24,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404709575] [2021-07-09 22:11:24,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:11:24,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:11:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:11:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:11:24,211 INFO L87 Difference]: Start difference. First operand 203 states and 349 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:11:24,284 INFO L93 Difference]: Finished difference Result 167 states and 289 transitions. [2021-07-09 22:11:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 22:11:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-07-09 22:11:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:11:24,285 INFO L225 Difference]: With dead ends: 167 [2021-07-09 22:11:24,285 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:11:24,285 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:11:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:11:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:11:24,286 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) [2021-07-09 22:11:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:11:24,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-07-09 22:11:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:11:24,286 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:11:24,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:11:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:11:24,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:11:24,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 22:11:24,288 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:11:24,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:11:24 BasicIcfg [2021-07-09 22:11:24,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:11:24,291 INFO L168 Benchmark]: Toolchain (without parser) took 4570.55 ms. Allocated memory was 223.3 MB in the beginning and 304.1 MB in the end (delta: 80.7 MB). Free memory was 185.7 MB in the beginning and 242.7 MB in the end (delta: -57.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:11:24,291 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 223.3 MB. Free memory was 203.9 MB in the beginning and 203.8 MB in the end (delta: 102.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:11:24,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.18 ms. Allocated memory is still 223.3 MB. Free memory was 185.5 MB in the beginning and 195.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2021-07-09 22:11:24,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 223.3 MB. Free memory was 195.7 MB in the beginning and 193.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:11:24,292 INFO L168 Benchmark]: Boogie Preprocessor took 19.08 ms. Allocated memory is still 223.3 MB. Free memory was 193.0 MB in the beginning and 191.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:11:24,292 INFO L168 Benchmark]: RCFGBuilder took 507.63 ms. Allocated memory is still 223.3 MB. Free memory was 191.5 MB in the beginning and 167.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:11:24,293 INFO L168 Benchmark]: TraceAbstraction took 3534.89 ms. Allocated memory was 223.3 MB in the beginning and 304.1 MB in the end (delta: 80.7 MB). Free memory was 167.3 MB in the beginning and 242.7 MB in the end (delta: -75.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2021-07-09 22:11:24,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 223.3 MB. Free memory was 203.9 MB in the beginning and 203.8 MB in the end (delta: 102.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 454.18 ms. Allocated memory is still 223.3 MB. Free memory was 185.5 MB in the beginning and 195.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 223.3 MB. Free memory was 195.7 MB in the beginning and 193.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.08 ms. Allocated memory is still 223.3 MB. Free memory was 193.0 MB in the beginning and 191.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 507.63 ms. Allocated memory is still 223.3 MB. Free memory was 191.5 MB in the beginning and 167.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3534.89 ms. Allocated memory was 223.3 MB in the beginning and 304.1 MB in the end (delta: 80.7 MB). Free memory was 167.3 MB in the beginning and 242.7 MB in the end (delta: -75.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15504, positive: 15015, positive conditional: 15015, positive unconditional: 0, negative: 489, negative conditional: 489, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15435, positive: 15015, positive conditional: 0, positive unconditional: 15015, negative: 420, negative conditional: 0, negative unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 616, positive: 602, positive conditional: 0, positive unconditional: 602, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 616, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15435, positive: 14413, positive conditional: 0, positive unconditional: 14413, negative: 406, negative conditional: 0, negative unconditional: 406, unknown: 616, unknown conditional: 0, unknown unconditional: 616] , Statistics on independence cache: Total cache size (in pairs): 616, Positive cache size: 602, Positive conditional cache size: 0, Positive unconditional cache size: 602, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Independence queries for same thread: 69 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3408.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 49.1ms, AutomataDifference: 1260.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 563.4ms, PartialOrderReductionTime: 541.8ms, HoareTripleCheckerStatistics: 694 SDtfs, 958 SDslu, 2115 SDs, 0 SdLazy, 279 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 279.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 960.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4775occurred in iteration=0, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 249.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.1ms SsaConstructionTime, 227.4ms SatisfiabilityAnalysisTime, 828.3ms InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...