/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:12:27,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:12:27,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:12:27,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 22:12:27,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 22:12:27,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 22:12:27,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 22:12:27,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 22:12:27,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 22:12:27,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 22:12:27,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 22:12:27,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 22:12:27,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:12:27,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:12:27,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:12:27,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:12:27,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:12:27,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:12:27,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:12:27,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:12:27,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:12:27,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:12:27,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:12:27,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:12:27,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 22:12:27,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 22:12:27,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 22:12:27,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 22:12:27,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 22:12:27,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 22:12:27,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 22:12:27,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 22:12:27,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 22:12:27,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 22:12:27,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 22:12:27,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 22:12:27,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 22:12:27,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 22:12:27,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 22:12:27,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 22:12:27,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 22:12:27,368 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 22:12:27,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:12:27,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:12:27,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:12:27,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:12:27,408 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:12:27,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:12:27,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:12:27,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:12:27,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:12:27,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:12:27,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:12:27,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:12:27,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:12:27,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:12:27,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:12:27,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:12:27,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:12:27,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:12:27,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:12:27,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:12:27,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:12:27,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:12:27,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:12:27,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:12:27,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:12:27,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:12:27,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:12:27,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:12:27,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:12:27,413 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:12:27,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:12:27,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:12:27,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:12:27,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:12:27,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 22:12:27,786 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 22:12:27,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-07-09 22:12:27,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61517c28/d9fbedc2292649209b9983f8b6ecf6ef/FLAG9378bf31a [2021-07-09 22:12:28,300 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 22:12:28,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-07-09 22:12:28,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61517c28/d9fbedc2292649209b9983f8b6ecf6ef/FLAG9378bf31a [2021-07-09 22:12:28,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61517c28/d9fbedc2292649209b9983f8b6ecf6ef [2021-07-09 22:12:28,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:12:28,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 22:12:28,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 22:12:28,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 22:12:28,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 22:12:28,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da1406c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28, skipping insertion in model container [2021-07-09 22:12:28,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 22:12:28,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 22:12:28,557 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/safe026_tso.opt.i[949,962] [2021-07-09 22:12:28,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:12:28,726 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 22:12:28,737 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/safe026_tso.opt.i[949,962] [2021-07-09 22:12:28,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:12:28,825 INFO L208 MainTranslator]: Completed translation [2021-07-09 22:12:28,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28 WrapperNode [2021-07-09 22:12:28,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 22:12:28,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:12:28,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:12:28,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:12:28,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:12:28,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:12:28,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:12:28,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:12:28,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (1/1) ... [2021-07-09 22:12:28,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:12:28,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:12:28,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:12:28,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:12:28,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (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 22:12:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 22:12:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 22:12:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 22:12:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 22:12:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 22:12:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 22:12:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 22:12:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 22:12:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 22:12:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 22:12:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 22:12:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 22:12:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:12:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:12:29,010 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 22:12:29,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:12:29,351 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 22:12:29,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:12:29 BoogieIcfgContainer [2021-07-09 22:12:29,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:12:29,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:12:29,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:12:29,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:12:29,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 10:12:28" (1/3) ... [2021-07-09 22:12:29,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb3cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:12:29, skipping insertion in model container [2021-07-09 22:12:29,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:28" (2/3) ... [2021-07-09 22:12:29,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb3cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:12:29, skipping insertion in model container [2021-07-09 22:12:29,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:12:29" (3/3) ... [2021-07-09 22:12:29,360 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-07-09 22:12:29,365 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:12:29,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:12:29,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:12:29,366 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:12:29,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,397 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,405 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,405 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:29,409 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 22:12:29,429 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 22:12:29,446 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:12:29,446 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:12:29,446 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:12:29,446 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:12:29,446 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:12:29,446 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:12:29,447 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:12:29,447 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:12:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 4774 states, 4088 states have (on average 2.0420743639921723) internal successors, (8348), 4773 states have internal predecessors, (8348), 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 22:12:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 22:12:30,000 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:30,001 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] [2021-07-09 22:12:30,001 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1683349452, now seen corresponding path program 1 times [2021-07-09 22:12:30,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:30,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122123944] [2021-07-09 22:12:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:30,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:30,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:30,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:30,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:30,295 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:12:30,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:12:30,333 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:30,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:30,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:30,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:30,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:30,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:30,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:30,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:30,413 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 22:12:30,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:30,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122123944] [2021-07-09 22:12:30,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122123944] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:30,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:30,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:30,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784528040] [2021-07-09 22:12:30,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:30,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:30,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:30,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:30,442 INFO L87 Difference]: Start difference. First operand has 4774 states, 4088 states have (on average 2.0420743639921723) internal successors, (8348), 4773 states have internal predecessors, (8348), 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:30,886 INFO L93 Difference]: Finished difference Result 7726 states and 14209 transitions. [2021-07-09 22:12:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 22:12:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 22:12:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:30,924 INFO L225 Difference]: With dead ends: 7726 [2021-07-09 22:12:30,926 INFO L226 Difference]: Without dead ends: 2785 [2021-07-09 22:12:30,933 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 283.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:12:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-07-09 22:12:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2265. [2021-07-09 22:12:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 2223 states have (on average 2.3049932523616734) internal successors, (5124), 2264 states have internal predecessors, (5124), 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 22:12:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 5124 transitions. [2021-07-09 22:12:31,099 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 5124 transitions. Word has length 48 [2021-07-09 22:12:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:31,100 INFO L482 AbstractCegarLoop]: Abstraction has 2265 states and 5124 transitions. [2021-07-09 22:12:31,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 5124 transitions. [2021-07-09 22:12:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 22:12:31,105 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:31,105 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] [2021-07-09 22:12:31,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:12:31,106 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:31,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:31,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1410993197, now seen corresponding path program 1 times [2021-07-09 22:12:31,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:31,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225089704] [2021-07-09 22:12:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:31,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:31,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:31,244 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:12:31,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:12:31,262 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:31,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:31,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:31,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:31,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:31,312 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 22:12:31,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:31,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225089704] [2021-07-09 22:12:31,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225089704] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:31,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:31,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:31,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84157680] [2021-07-09 22:12:31,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:31,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:31,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:31,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:31,319 INFO L87 Difference]: Start difference. First operand 2265 states and 5124 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:31,565 INFO L93 Difference]: Finished difference Result 3457 states and 8228 transitions. [2021-07-09 22:12:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 22:12:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-07-09 22:12:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:31,580 INFO L225 Difference]: With dead ends: 3457 [2021-07-09 22:12:31,580 INFO L226 Difference]: Without dead ends: 2613 [2021-07-09 22:12:31,581 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:12:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2021-07-09 22:12:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2061. [2021-07-09 22:12:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2025 states have (on average 2.325925925925926) internal successors, (4710), 2060 states have internal predecessors, (4710), 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 22:12:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 4710 transitions. [2021-07-09 22:12:31,672 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 4710 transitions. Word has length 50 [2021-07-09 22:12:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:31,672 INFO L482 AbstractCegarLoop]: Abstraction has 2061 states and 4710 transitions. [2021-07-09 22:12:31,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 4710 transitions. [2021-07-09 22:12:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 22:12:31,680 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:31,681 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] [2021-07-09 22:12:31,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 22:12:31,681 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1195424850, now seen corresponding path program 1 times [2021-07-09 22:12:31,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:31,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138358362] [2021-07-09 22:12:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:31,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:31,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:31,806 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:12:31,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:12:31,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:12:31,839 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:12:31,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:31,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:31,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:31,855 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 22:12:31,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:31,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138358362] [2021-07-09 22:12:31,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138358362] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:31,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:31,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:12:31,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129363392] [2021-07-09 22:12:31,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:12:31,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:31,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:12:31,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:12:31,860 INFO L87 Difference]: Start difference. First operand 2061 states and 4710 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 22:12:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:31,985 INFO L93 Difference]: Finished difference Result 2633 states and 5787 transitions. [2021-07-09 22:12:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:12:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2021-07-09 22:12:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:31,995 INFO L225 Difference]: With dead ends: 2633 [2021-07-09 22:12:31,996 INFO L226 Difference]: Without dead ends: 1769 [2021-07-09 22:12:31,996 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:12:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-07-09 22:12:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1769. [2021-07-09 22:12:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1733 states have (on average 2.3237160992498556) internal successors, (4027), 1768 states have internal predecessors, (4027), 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 22:12:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 4027 transitions. [2021-07-09 22:12:32,047 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 4027 transitions. Word has length 52 [2021-07-09 22:12:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:32,049 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 4027 transitions. [2021-07-09 22:12:32,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 22:12:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 4027 transitions. [2021-07-09 22:12:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 22:12:32,052 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:32,052 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 22:12:32,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 22:12:32,052 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:32,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash -937938768, now seen corresponding path program 1 times [2021-07-09 22:12:32,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:32,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198352777] [2021-07-09 22:12:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:32,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,138 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:12:32,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:12:32,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:12:32,167 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:12:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:32,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,178 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 22:12:32,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:32,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198352777] [2021-07-09 22:12:32,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198352777] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:32,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:32,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:32,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958206039] [2021-07-09 22:12:32,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:32,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:32,181 INFO L87 Difference]: Start difference. First operand 1769 states and 4027 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 22:12:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:32,330 INFO L93 Difference]: Finished difference Result 1648 states and 3466 transitions. [2021-07-09 22:12:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:12:32,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 22:12:32,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:32,335 INFO L225 Difference]: With dead ends: 1648 [2021-07-09 22:12:32,336 INFO L226 Difference]: Without dead ends: 951 [2021-07-09 22:12:32,336 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 22:12:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-07-09 22:12:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 947. [2021-07-09 22:12:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 917 states have (on average 2.178844056706652) internal successors, (1998), 946 states have internal predecessors, (1998), 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 22:12:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1998 transitions. [2021-07-09 22:12:32,359 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1998 transitions. Word has length 53 [2021-07-09 22:12:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:32,360 INFO L482 AbstractCegarLoop]: Abstraction has 947 states and 1998 transitions. [2021-07-09 22:12:32,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 22:12:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1998 transitions. [2021-07-09 22:12:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 22:12:32,363 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:32,363 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] [2021-07-09 22:12:32,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 22:12:32,363 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:32,364 INFO L82 PathProgramCache]: Analyzing trace with hash -722901777, now seen corresponding path program 1 times [2021-07-09 22:12:32,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:32,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474602115] [2021-07-09 22:12:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:32,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,471 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:12:32,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:12:32,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:12:32,503 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:12:32,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:32,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,516 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 22:12:32,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:32,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474602115] [2021-07-09 22:12:32,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474602115] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:32,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:32,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:12:32,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423550128] [2021-07-09 22:12:32,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:12:32,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:32,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:12:32,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:12:32,532 INFO L87 Difference]: Start difference. First operand 947 states and 1998 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 22:12:32,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:32,703 INFO L93 Difference]: Finished difference Result 641 states and 1241 transitions. [2021-07-09 22:12:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 22:12:32,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-07-09 22:12:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:32,705 INFO L225 Difference]: With dead ends: 641 [2021-07-09 22:12:32,705 INFO L226 Difference]: Without dead ends: 286 [2021-07-09 22:12:32,706 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:12:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-07-09 22:12:32,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 270. [2021-07-09 22:12:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 1.8314176245210727) internal successors, (478), 269 states have internal predecessors, (478), 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 22:12:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 478 transitions. [2021-07-09 22:12:32,712 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 478 transitions. Word has length 55 [2021-07-09 22:12:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:32,712 INFO L482 AbstractCegarLoop]: Abstraction has 270 states and 478 transitions. [2021-07-09 22:12:32,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 22:12:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 478 transitions. [2021-07-09 22:12:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-09 22:12:32,713 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:32,713 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] [2021-07-09 22:12:32,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 22:12:32,713 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:32,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:32,714 INFO L82 PathProgramCache]: Analyzing trace with hash 301051173, now seen corresponding path program 1 times [2021-07-09 22:12:32,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:32,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144283741] [2021-07-09 22:12:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:32,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,768 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:12:32,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:12:32,781 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:32,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:32,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:32,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:32,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,824 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 22:12:32,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:32,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144283741] [2021-07-09 22:12:32,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144283741] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:32,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:32,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:12:32,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555586989] [2021-07-09 22:12:32,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:12:32,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:32,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:12:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:12:32,827 INFO L87 Difference]: Start difference. First operand 270 states and 478 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 22:12:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:32,904 INFO L93 Difference]: Finished difference Result 420 states and 805 transitions. [2021-07-09 22:12:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 22:12:32,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-07-09 22:12:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:32,907 INFO L225 Difference]: With dead ends: 420 [2021-07-09 22:12:32,907 INFO L226 Difference]: Without dead ends: 279 [2021-07-09 22:12:32,908 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 22:12:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-07-09 22:12:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2021-07-09 22:12:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 254 states have (on average 1.8385826771653544) internal successors, (467), 262 states have internal predecessors, (467), 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 22:12:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 467 transitions. [2021-07-09 22:12:32,915 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 467 transitions. Word has length 59 [2021-07-09 22:12:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:32,915 INFO L482 AbstractCegarLoop]: Abstraction has 263 states and 467 transitions. [2021-07-09 22:12:32,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 22:12:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 467 transitions. [2021-07-09 22:12:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-09 22:12:32,916 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:32,916 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] [2021-07-09 22:12:32,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 22:12:32,916 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash 268407291, now seen corresponding path program 2 times [2021-07-09 22:12:32,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:32,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311126671] [2021-07-09 22:12:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:32,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:32,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:32,984 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:32,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:33,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:33,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:33,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:33,024 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 22:12:33,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:33,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311126671] [2021-07-09 22:12:33,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311126671] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:33,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:33,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:12:33,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556800541] [2021-07-09 22:12:33,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:12:33,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:12:33,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:12:33,027 INFO L87 Difference]: Start difference. First operand 263 states and 467 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 22:12:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:33,082 INFO L93 Difference]: Finished difference Result 417 states and 776 transitions. [2021-07-09 22:12:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 22:12:33,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2021-07-09 22:12:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:33,084 INFO L225 Difference]: With dead ends: 417 [2021-07-09 22:12:33,084 INFO L226 Difference]: Without dead ends: 250 [2021-07-09 22:12:33,086 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-09 22:12:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-07-09 22:12:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-07-09 22:12:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 241 states have (on average 1.8506224066390042) internal successors, (446), 249 states have internal predecessors, (446), 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 22:12:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 446 transitions. [2021-07-09 22:12:33,092 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 446 transitions. Word has length 59 [2021-07-09 22:12:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:33,093 INFO L482 AbstractCegarLoop]: Abstraction has 250 states and 446 transitions. [2021-07-09 22:12:33,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 22:12:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 446 transitions. [2021-07-09 22:12:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-09 22:12:33,094 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:33,094 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] [2021-07-09 22:12:33,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 22:12:33,094 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:33,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1908497593, now seen corresponding path program 3 times [2021-07-09 22:12:33,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:33,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061881518] [2021-07-09 22:12:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:33,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:33,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:33,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:33,141 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:33,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:33,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:33,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:33,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:33,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:33,177 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 22:12:33,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:33,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061881518] [2021-07-09 22:12:33,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061881518] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:33,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:33,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:33,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386262570] [2021-07-09 22:12:33,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:33,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:33,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:33,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:33,179 INFO L87 Difference]: Start difference. First operand 250 states and 446 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 22:12:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:33,239 INFO L93 Difference]: Finished difference Result 214 states and 386 transitions. [2021-07-09 22:12:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 22:12:33,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2021-07-09 22:12:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:33,239 INFO L225 Difference]: With dead ends: 214 [2021-07-09 22:12:33,239 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:12:33,240 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:12:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:12:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:12:33,240 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 22:12:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:12:33,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-07-09 22:12:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:33,241 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:12:33,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 22:12:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:12:33,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:12:33,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 22:12:33,243 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:12:33,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:12:33 BasicIcfg [2021-07-09 22:12:33,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:12:33,245 INFO L168 Benchmark]: Toolchain (without parser) took 4911.24 ms. Allocated memory was 181.4 MB in the beginning and 257.9 MB in the end (delta: 76.5 MB). Free memory was 145.2 MB in the beginning and 104.1 MB in the end (delta: 41.0 MB). Peak memory consumption was 117.7 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:33,246 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 181.4 MB. Free memory is still 163.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:12:33,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.42 ms. Allocated memory is still 181.4 MB. Free memory was 145.0 MB in the beginning and 154.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:33,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.49 ms. Allocated memory is still 181.4 MB. Free memory was 154.4 MB in the beginning and 152.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:33,246 INFO L168 Benchmark]: Boogie Preprocessor took 32.11 ms. Allocated memory is still 181.4 MB. Free memory was 152.8 MB in the beginning and 151.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:33,247 INFO L168 Benchmark]: RCFGBuilder took 431.73 ms. Allocated memory is still 181.4 MB. Free memory was 151.3 MB in the beginning and 128.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:33,247 INFO L168 Benchmark]: TraceAbstraction took 3889.59 ms. Allocated memory was 181.4 MB in the beginning and 257.9 MB in the end (delta: 76.5 MB). Free memory was 127.7 MB in the beginning and 104.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 101.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:33,248 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 181.4 MB. Free memory is still 163.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 492.42 ms. Allocated memory is still 181.4 MB. Free memory was 145.0 MB in the beginning and 154.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.49 ms. Allocated memory is still 181.4 MB. Free memory was 154.4 MB in the beginning and 152.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.11 ms. Allocated memory is still 181.4 MB. Free memory was 152.8 MB in the beginning and 151.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.73 ms. Allocated memory is still 181.4 MB. Free memory was 151.3 MB in the beginning and 128.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3889.59 ms. Allocated memory was 181.4 MB in the beginning and 257.9 MB in the end (delta: 76.5 MB). Free memory was 127.7 MB in the beginning and 104.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 101.1 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: 15841, positive: 15204, positive conditional: 15204, positive unconditional: 0, negative: 637, negative conditional: 637, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15768, positive: 15204, positive conditional: 0, positive unconditional: 15204, negative: 564, negative conditional: 0, negative unconditional: 564, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 611, positive: 595, positive conditional: 0, positive unconditional: 595, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 611, positive: 591, positive conditional: 0, positive unconditional: 591, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15768, positive: 14609, positive conditional: 0, positive unconditional: 14609, negative: 548, negative conditional: 0, negative unconditional: 548, unknown: 611, unknown conditional: 0, unknown unconditional: 611] , Statistics on independence cache: Total cache size (in pairs): 611, Positive cache size: 595, Positive conditional cache size: 0, Positive unconditional cache size: 595, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Independence queries for same thread: 73 - 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, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3797.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 65.9ms, AutomataDifference: 1462.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 507.9ms, PartialOrderReductionTime: 493.5ms, HoareTripleCheckerStatistics: 708 SDtfs, 943 SDslu, 2329 SDs, 0 SdLazy, 320 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 269.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1066.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4774occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 334.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1108 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.4ms SsaConstructionTime, 193.7ms SatisfiabilityAnalysisTime, 1019.0ms InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 1543 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...