/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:49:27,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:49:27,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:49:27,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:49:27,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:49:27,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:49:27,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:49:27,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:49:27,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:49:27,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:49:27,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:49:27,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:49:27,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:49:27,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:49:27,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:49:27,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:49:27,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 16:49:27,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:49:27,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:49:27,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:49:27,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-09 16:49:27,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:49:27,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:49:27,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:49:27,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:49:27,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:49:27,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:49:27,234 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:49:27,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:49:27,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:49:27,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:49:27,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:49:27,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:49:27,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:49:27,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:49:27,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:49:27,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:49:27,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:49:27,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:49:27,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:49:27,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:49:27,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:49:27,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:49:27,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:49:27,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:49:27,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:49:27,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:49:27,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:49:27,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:49:27,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:49:27,239 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:49:27,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:49:27,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:49:27,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:49:27,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:49:27,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:49:27,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:49:27,597 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:49:27,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-07-09 16:49:27,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf6c4e47/c4202d724479493c8623e482474f935f/FLAG7ff66ee57 [2021-07-09 16:49:28,144 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:49:28,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-07-09 16:49:28,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf6c4e47/c4202d724479493c8623e482474f935f/FLAG7ff66ee57 [2021-07-09 16:49:28,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf6c4e47/c4202d724479493c8623e482474f935f [2021-07-09 16:49:28,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:49:28,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:49:28,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:49:28,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:49:28,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:49:28,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:49:28" (1/1) ... [2021-07-09 16:49:28,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2600a581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:28, skipping insertion in model container [2021-07-09 16:49:28,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:49:28" (1/1) ... [2021-07-09 16:49:28,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:49:28,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:49:28,705 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/safe015_tso.opt.i[949,962] [2021-07-09 16:49:28,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:49:28,914 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:49:28,924 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/safe015_tso.opt.i[949,962] [2021-07-09 16:49:28,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:49:29,007 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:49:29,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29 WrapperNode [2021-07-09 16:49:29,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:49:29,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:49:29,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:49:29,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:49:29,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:49:29,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:49:29,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:49:29,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:49:29,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (1/1) ... [2021-07-09 16:49:29,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:49:29,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:49:29,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:49:29,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:49:29,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (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 16:49:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:49:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:49:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:49:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:49:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 16:49:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 16:49:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 16:49:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 16:49:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 16:49:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 16:49:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:49:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:49:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:49:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:49:29,181 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 16:49:29,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:49:29,538 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 16:49:29,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:49:29 BoogieIcfgContainer [2021-07-09 16:49:29,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:49:29,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:49:29,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:49:29,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:49:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:49:28" (1/3) ... [2021-07-09 16:49:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2597b29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:49:29, skipping insertion in model container [2021-07-09 16:49:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:29" (2/3) ... [2021-07-09 16:49:29,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2597b29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:49:29, skipping insertion in model container [2021-07-09 16:49:29,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:49:29" (3/3) ... [2021-07-09 16:49:29,546 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-07-09 16:49:29,551 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:49:29,551 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:49:29,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:49:29,552 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:49:29,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,584 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,588 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,588 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,593 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,593 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:29,598 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:49:29,619 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 16:49:29,634 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:49:29,634 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:49:29,634 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:49:29,634 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:49:29,634 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:49:29,634 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:49:29,635 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:49:29,635 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:49:29,644 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-07-09 16:49:29,860 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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 16:49:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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 16:49:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 16:49:29,915 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:29,916 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] [2021-07-09 16:49:29,917 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-07-09 16:49:29,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:29,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564958230] [2021-07-09 16:49:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:30,440 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 16:49:30,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:30,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564958230] [2021-07-09 16:49:30,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564958230] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:30,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:30,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:30,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315687665] [2021-07-09 16:49:30,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:30,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:30,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:30,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:30,492 INFO L87 Difference]: Start difference. First operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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 16:49:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:31,126 INFO L93 Difference]: Finished difference Result 9287 states and 31382 transitions. [2021-07-09 16:49:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 16:49:31,128 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 16:49:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:31,199 INFO L225 Difference]: With dead ends: 9287 [2021-07-09 16:49:31,199 INFO L226 Difference]: Without dead ends: 6029 [2021-07-09 16:49:31,200 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 408.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2021-07-09 16:49:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5099. [2021-07-09 16:49:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3203216947822676) internal successors, (16927), 5098 states have internal predecessors, (16927), 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 16:49:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 16927 transitions. [2021-07-09 16:49:31,544 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 16927 transitions. Word has length 48 [2021-07-09 16:49:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:31,548 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 16927 transitions. [2021-07-09 16:49:31,552 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 16:49:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 16927 transitions. [2021-07-09 16:49:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 16:49:31,570 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:31,571 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 16:49:31,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:49:31,571 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:31,574 INFO L82 PathProgramCache]: Analyzing trace with hash -153177928, now seen corresponding path program 1 times [2021-07-09 16:49:31,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:31,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456011140] [2021-07-09 16:49:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:31,745 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 16:49:31,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:31,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456011140] [2021-07-09 16:49:31,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456011140] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:31,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:31,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:31,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934890033] [2021-07-09 16:49:31,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:31,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:31,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:31,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:31,750 INFO L87 Difference]: Start difference. First operand 5099 states and 16927 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 16:49:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:31,999 INFO L93 Difference]: Finished difference Result 5851 states and 19300 transitions. [2021-07-09 16:49:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:32,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 16:49:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:32,031 INFO L225 Difference]: With dead ends: 5851 [2021-07-09 16:49:32,032 INFO L226 Difference]: Without dead ends: 4871 [2021-07-09 16:49:32,032 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-07-09 16:49:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4855. [2021-07-09 16:49:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4854 states have (on average 3.3014009064688916) internal successors, (16025), 4854 states have internal predecessors, (16025), 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 16:49:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 16025 transitions. [2021-07-09 16:49:32,212 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 16025 transitions. Word has length 50 [2021-07-09 16:49:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:32,212 INFO L482 AbstractCegarLoop]: Abstraction has 4855 states and 16025 transitions. [2021-07-09 16:49:32,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 16:49:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 16025 transitions. [2021-07-09 16:49:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:49:32,225 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:32,226 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 16:49:32,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:49:32,226 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1846206727, now seen corresponding path program 1 times [2021-07-09 16:49:32,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:32,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562404033] [2021-07-09 16:49:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:32,400 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 16:49:32,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:32,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562404033] [2021-07-09 16:49:32,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562404033] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:32,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:32,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:32,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768600734] [2021-07-09 16:49:32,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:32,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:32,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:32,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:32,402 INFO L87 Difference]: Start difference. First operand 4855 states and 16025 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 16:49:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:32,621 INFO L93 Difference]: Finished difference Result 5255 states and 17240 transitions. [2021-07-09 16:49:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:32,622 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 16:49:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:32,664 INFO L225 Difference]: With dead ends: 5255 [2021-07-09 16:49:32,664 INFO L226 Difference]: Without dead ends: 4555 [2021-07-09 16:49:32,665 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-07-09 16:49:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4427. [2021-07-09 16:49:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.2790329868956167) internal successors, (14513), 4426 states have internal predecessors, (14513), 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 16:49:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-07-09 16:49:32,808 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-07-09 16:49:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:32,810 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-07-09 16:49:32,810 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 16:49:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-07-09 16:49:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:49:32,822 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:32,822 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:49:32,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:49:32,822 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:32,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-07-09 16:49:32,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:32,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552423818] [2021-07-09 16:49:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:33,040 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 16:49:33,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:33,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552423818] [2021-07-09 16:49:33,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552423818] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:33,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:33,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:33,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750328099] [2021-07-09 16:49:33,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:33,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:33,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:33,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:33,042 INFO L87 Difference]: Start difference. First operand 4427 states and 14513 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:33,403 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-07-09 16:49:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 16:49:33,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 16:49:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:33,426 INFO L225 Difference]: With dead ends: 6233 [2021-07-09 16:49:33,426 INFO L226 Difference]: Without dead ends: 5349 [2021-07-09 16:49:33,426 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 266.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-07-09 16:49:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-07-09 16:49:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2649857278782113) internal successors, (13726), 4204 states have internal predecessors, (13726), 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 16:49:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-07-09 16:49:33,568 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-07-09 16:49:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:33,571 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-07-09 16:49:33,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-07-09 16:49:33,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:49:33,586 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:33,586 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:49:33,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:49:33,591 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-07-09 16:49:33,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:33,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125197067] [2021-07-09 16:49:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:33,779 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 16:49:33,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:33,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125197067] [2021-07-09 16:49:33,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125197067] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:33,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:33,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:33,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743088814] [2021-07-09 16:49:33,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:33,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:33,782 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:34,107 INFO L93 Difference]: Finished difference Result 7404 states and 23874 transitions. [2021-07-09 16:49:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 16:49:34,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 16:49:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:34,130 INFO L225 Difference]: With dead ends: 7404 [2021-07-09 16:49:34,130 INFO L226 Difference]: Without dead ends: 5516 [2021-07-09 16:49:34,131 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 268.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2021-07-09 16:49:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 3757. [2021-07-09 16:49:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3757 states, 3756 states have (on average 3.213525026624068) internal successors, (12070), 3756 states have internal predecessors, (12070), 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 16:49:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 12070 transitions. [2021-07-09 16:49:34,297 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 12070 transitions. Word has length 54 [2021-07-09 16:49:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:34,298 INFO L482 AbstractCegarLoop]: Abstraction has 3757 states and 12070 transitions. [2021-07-09 16:49:34,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 12070 transitions. [2021-07-09 16:49:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:49:34,309 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:34,310 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 16:49:34,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:49:34,310 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:34,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:34,311 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-07-09 16:49:34,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:34,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710956965] [2021-07-09 16:49:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:34,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:34,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710956965] [2021-07-09 16:49:34,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710956965] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:34,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:34,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:34,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270442898] [2021-07-09 16:49:34,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:34,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:34,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:34,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:34,440 INFO L87 Difference]: Start difference. First operand 3757 states and 12070 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 16:49:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:34,570 INFO L93 Difference]: Finished difference Result 4785 states and 15145 transitions. [2021-07-09 16:49:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 16:49:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:34,584 INFO L225 Difference]: With dead ends: 4785 [2021-07-09 16:49:34,584 INFO L226 Difference]: Without dead ends: 3413 [2021-07-09 16:49:34,584 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2021-07-09 16:49:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 3413. [2021-07-09 16:49:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 3412 states have (on average 3.148886283704572) internal successors, (10744), 3412 states have internal predecessors, (10744), 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 16:49:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 10744 transitions. [2021-07-09 16:49:34,694 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 10744 transitions. Word has length 55 [2021-07-09 16:49:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:34,695 INFO L482 AbstractCegarLoop]: Abstraction has 3413 states and 10744 transitions. [2021-07-09 16:49:34,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 16:49:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 10744 transitions. [2021-07-09 16:49:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-09 16:49:34,704 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:34,704 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:49:34,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:49:34,705 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:34,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:34,705 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-07-09 16:49:34,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:34,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349453583] [2021-07-09 16:49:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:34,834 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 16:49:34,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:34,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349453583] [2021-07-09 16:49:34,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349453583] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:34,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:34,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:34,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747235800] [2021-07-09 16:49:34,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:34,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:34,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:34,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:34,837 INFO L87 Difference]: Start difference. First operand 3413 states and 10744 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:34,982 INFO L93 Difference]: Finished difference Result 3665 states and 11272 transitions. [2021-07-09 16:49:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:49:34,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-07-09 16:49:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:34,991 INFO L225 Difference]: With dead ends: 3665 [2021-07-09 16:49:34,992 INFO L226 Difference]: Without dead ends: 2537 [2021-07-09 16:49:34,992 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:49:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2021-07-09 16:49:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2021-07-09 16:49:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2536 states have (on average 3.0232649842271293) internal successors, (7667), 2536 states have internal predecessors, (7667), 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 16:49:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 7667 transitions. [2021-07-09 16:49:35,091 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 7667 transitions. Word has length 56 [2021-07-09 16:49:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:35,091 INFO L482 AbstractCegarLoop]: Abstraction has 2537 states and 7667 transitions. [2021-07-09 16:49:35,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 7667 transitions. [2021-07-09 16:49:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 16:49:35,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:35,097 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:49:35,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 16:49:35,098 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:35,098 INFO L82 PathProgramCache]: Analyzing trace with hash 55032350, now seen corresponding path program 1 times [2021-07-09 16:49:35,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:35,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335796624] [2021-07-09 16:49:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:35,204 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 16:49:35,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:35,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335796624] [2021-07-09 16:49:35,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335796624] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:35,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:35,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:35,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235616948] [2021-07-09 16:49:35,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:35,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:35,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:35,206 INFO L87 Difference]: Start difference. First operand 2537 states and 7667 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:35,348 INFO L93 Difference]: Finished difference Result 2267 states and 6722 transitions. [2021-07-09 16:49:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 16:49:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-07-09 16:49:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:35,351 INFO L225 Difference]: With dead ends: 2267 [2021-07-09 16:49:35,352 INFO L226 Difference]: Without dead ends: 872 [2021-07-09 16:49:35,352 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-07-09 16:49:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-07-09 16:49:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 2.9001148105625716) internal successors, (2526), 871 states have internal predecessors, (2526), 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 16:49:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2526 transitions. [2021-07-09 16:49:35,373 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2526 transitions. Word has length 58 [2021-07-09 16:49:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:35,373 INFO L482 AbstractCegarLoop]: Abstraction has 872 states and 2526 transitions. [2021-07-09 16:49:35,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2526 transitions. [2021-07-09 16:49:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 16:49:35,375 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:35,375 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:49:35,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 16:49:35,376 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:35,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1259396511, now seen corresponding path program 1 times [2021-07-09 16:49:35,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:35,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264339595] [2021-07-09 16:49:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:35,492 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 16:49:35,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:35,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264339595] [2021-07-09 16:49:35,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264339595] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:35,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:35,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:35,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441015458] [2021-07-09 16:49:35,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:35,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:35,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:35,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:35,494 INFO L87 Difference]: Start difference. First operand 872 states and 2526 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:35,574 INFO L93 Difference]: Finished difference Result 1355 states and 3967 transitions. [2021-07-09 16:49:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-07-09 16:49:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:35,578 INFO L225 Difference]: With dead ends: 1355 [2021-07-09 16:49:35,578 INFO L226 Difference]: Without dead ends: 804 [2021-07-09 16:49:35,580 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:49:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-07-09 16:49:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2021-07-09 16:49:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.8779576587795765) internal successors, (2311), 803 states have internal predecessors, (2311), 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 16:49:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2311 transitions. [2021-07-09 16:49:35,596 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2311 transitions. Word has length 60 [2021-07-09 16:49:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:35,597 INFO L482 AbstractCegarLoop]: Abstraction has 804 states and 2311 transitions. [2021-07-09 16:49:35,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2311 transitions. [2021-07-09 16:49:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 16:49:35,599 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:35,599 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:49:35,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 16:49:35,599 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:35,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1424861539, now seen corresponding path program 2 times [2021-07-09 16:49:35,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:35,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248733847] [2021-07-09 16:49:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:35,667 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 16:49:35,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:35,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248733847] [2021-07-09 16:49:35,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248733847] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:35,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:35,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:35,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919201077] [2021-07-09 16:49:35,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:35,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:35,669 INFO L87 Difference]: Start difference. First operand 804 states and 2311 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:35,729 INFO L93 Difference]: Finished difference Result 750 states and 2149 transitions. [2021-07-09 16:49:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:49:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-07-09 16:49:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:35,730 INFO L225 Difference]: With dead ends: 750 [2021-07-09 16:49:35,730 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:49:35,730 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:49:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:49:35,731 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 16:49:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:49:35,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-07-09 16:49:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:35,731 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:49:35,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:49:35,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:49:35,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 16:49:35,733 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:49:35,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:49:35 BasicIcfg [2021-07-09 16:49:35,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:49:35,736 INFO L168 Benchmark]: Toolchain (without parser) took 7246.50 ms. Allocated memory was 185.6 MB in the beginning and 663.7 MB in the end (delta: 478.2 MB). Free memory was 147.2 MB in the beginning and 359.5 MB in the end (delta: -212.3 MB). Peak memory consumption was 267.2 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:35,736 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 185.6 MB. Free memory is still 165.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:49:35,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.28 ms. Allocated memory is still 185.6 MB. Free memory was 147.0 MB in the beginning and 158.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:35,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.29 ms. Allocated memory is still 185.6 MB. Free memory was 158.3 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:35,737 INFO L168 Benchmark]: Boogie Preprocessor took 34.37 ms. Allocated memory is still 185.6 MB. Free memory was 156.2 MB in the beginning and 155.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:35,737 INFO L168 Benchmark]: RCFGBuilder took 436.82 ms. Allocated memory is still 185.6 MB. Free memory was 154.7 MB in the beginning and 131.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:35,738 INFO L168 Benchmark]: TraceAbstraction took 6194.47 ms. Allocated memory was 185.6 MB in the beginning and 663.7 MB in the end (delta: 478.2 MB). Free memory was 131.1 MB in the beginning and 359.5 MB in the end (delta: -228.4 MB). Peak memory consumption was 250.8 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:35,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 185.6 MB. Free memory is still 165.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 515.28 ms. Allocated memory is still 185.6 MB. Free memory was 147.0 MB in the beginning and 158.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.29 ms. Allocated memory is still 185.6 MB. Free memory was 158.3 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.37 ms. Allocated memory is still 185.6 MB. Free memory was 156.2 MB in the beginning and 155.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 436.82 ms. Allocated memory is still 185.6 MB. Free memory was 154.7 MB in the beginning and 131.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6194.47 ms. Allocated memory was 185.6 MB in the beginning and 663.7 MB in the end (delta: 478.2 MB). Free memory was 131.1 MB in the beginning and 359.5 MB in the end (delta: -228.4 MB). Peak memory consumption was 250.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6100.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 141.1ms, AutomataDifference: 2629.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 225.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1038 SDtfs, 1427 SDslu, 3626 SDs, 0 SdLazy, 460 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 481.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1733.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5558occurred in iteration=0, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1207.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3977 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 74.2ms SsaConstructionTime, 240.7ms SatisfiabilityAnalysisTime, 1352.0ms InterpolantComputationTime, 547 NumberOfCodeBlocks, 547 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 537 ConstructedInterpolants, 0 QuantifiedInterpolants, 2199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...