/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:51:05,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:51:05,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:51:05,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 16:51:05,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 16:51:05,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 16:51:05,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 16:51:05,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 16:51:05,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 16:51:05,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 16:51:05,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 16:51:05,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 16:51:05,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:51:05,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:51:05,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:51:05,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:51:05,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:51:05,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:51:05,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:51:05,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:51:05,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:51:05,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:51:05,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:51:05,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:51:05,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 16:51:05,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 16:51:05,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 16:51:05,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 16:51:05,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 16:51:05,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-07-09 16:51:05,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:51:05,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:51:05,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:51:05,316 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 16:51:05,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:51:05,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:51:05,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:51:05,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:51:05,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:51:05,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:51:05,347 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:51:05,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:51:05,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:51:05,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:51:05,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:51:05,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:51:05,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:51:05,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:51:05,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:51:05,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:51:05,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:51:05,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:51:05,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:51:05,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:51:05,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:51:05,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:51:05,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:51:05,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:51:05,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:51:05,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:51:05,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:51:05,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:51:05,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:51:05,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:51:05,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:51:05,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:51:05,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:51:05,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:51:05,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:51:05,666 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:51:05,666 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:51:05,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2021-07-09 16:51:05,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b195c71/40de94c4554744d2832ed0447ecf98ac/FLAG679aaab76 [2021-07-09 16:51:06,154 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:51:06,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2021-07-09 16:51:06,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b195c71/40de94c4554744d2832ed0447ecf98ac/FLAG679aaab76 [2021-07-09 16:51:06,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b195c71/40de94c4554744d2832ed0447ecf98ac [2021-07-09 16:51:06,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:51:06,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:51:06,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:51:06,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:51:06,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:51:06,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ca0fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06, skipping insertion in model container [2021-07-09 16:51:06,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:51:06,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:51:06,387 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/safe025_tso.oepc.i[950,963] [2021-07-09 16:51:06,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:51:06,492 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:51:06,498 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/safe025_tso.oepc.i[950,963] [2021-07-09 16:51:06,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:51:06,545 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:51:06,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06 WrapperNode [2021-07-09 16:51:06,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:51:06,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:51:06,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:51:06,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:51:06,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:51:06,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:51:06,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:51:06,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:51:06,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (1/1) ... [2021-07-09 16:51:06,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:51:06,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:51:06,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:51:06,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:51:06,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (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 16:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 16:51:06,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 16:51:06,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 16:51:06,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:51:06,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:51:06,647 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 16:51:06,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:51:06,916 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 16:51:06,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:51:06 BoogieIcfgContainer [2021-07-09 16:51:06,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:51:06,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:51:06,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:51:06,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:51:06,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:51:06" (1/3) ... [2021-07-09 16:51:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c38a89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:51:06, skipping insertion in model container [2021-07-09 16:51:06,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:51:06" (2/3) ... [2021-07-09 16:51:06,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c38a89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:51:06, skipping insertion in model container [2021-07-09 16:51:06,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:51:06" (3/3) ... [2021-07-09 16:51:06,923 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2021-07-09 16:51:06,926 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:51:06,926 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:51:06,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:51:06,927 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:51:06,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,949 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,953 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,954 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,958 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:51:06,960 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:51:06,975 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 16:51:06,986 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:51:06,986 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:51:06,986 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:51:06,986 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:51:06,986 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:51:06,986 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:51:06,986 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:51:06,986 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:51:06,993 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-07-09 16:51:07,116 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 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 16:51:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 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 16:51:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-09 16:51:07,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:07,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:51:07,155 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:07,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:07,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-07-09 16:51:07,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:07,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974265991] [2021-07-09 16:51:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:07,458 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 16:51:07,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:07,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974265991] [2021-07-09 16:51:07,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974265991] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:07,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:07,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:51:07,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834068764] [2021-07-09 16:51:07,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:51:07,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:07,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:51:07,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:51:07,497 INFO L87 Difference]: Start difference. First operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:07,829 INFO L93 Difference]: Finished difference Result 10344 states and 34883 transitions. [2021-07-09 16:51:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:51:07,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-09 16:51:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:07,891 INFO L225 Difference]: With dead ends: 10344 [2021-07-09 16:51:07,891 INFO L226 Difference]: Without dead ends: 7182 [2021-07-09 16:51:07,892 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:51:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-07-09 16:51:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 6060. [2021-07-09 16:51:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 6059 states have (on average 3.368872751279089) internal successors, (20412), 6059 states have internal predecessors, (20412), 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 16:51:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 20412 transitions. [2021-07-09 16:51:08,135 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 20412 transitions. Word has length 49 [2021-07-09 16:51:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:08,136 INFO L482 AbstractCegarLoop]: Abstraction has 6060 states and 20412 transitions. [2021-07-09 16:51:08,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 20412 transitions. [2021-07-09 16:51:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-09 16:51:08,147 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:08,147 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:51:08,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:51:08,147 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:08,148 INFO L82 PathProgramCache]: Analyzing trace with hash -303430371, now seen corresponding path program 1 times [2021-07-09 16:51:08,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:08,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044513587] [2021-07-09 16:51:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:08,245 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 16:51:08,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:08,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044513587] [2021-07-09 16:51:08,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044513587] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:08,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:08,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:51:08,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577485272] [2021-07-09 16:51:08,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:51:08,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:08,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:51:08,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:51:08,248 INFO L87 Difference]: Start difference. First operand 6060 states and 20412 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:08,445 INFO L93 Difference]: Finished difference Result 6620 states and 22145 transitions. [2021-07-09 16:51:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:51:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-09 16:51:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:08,472 INFO L225 Difference]: With dead ends: 6620 [2021-07-09 16:51:08,472 INFO L226 Difference]: Without dead ends: 5640 [2021-07-09 16:51:08,472 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:51:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5640 states. [2021-07-09 16:51:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5640 to 5320. [2021-07-09 16:51:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 3.342733596540703) internal successors, (17780), 5319 states have internal predecessors, (17780), 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 16:51:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 17780 transitions. [2021-07-09 16:51:08,651 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 17780 transitions. Word has length 51 [2021-07-09 16:51:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:08,652 INFO L482 AbstractCegarLoop]: Abstraction has 5320 states and 17780 transitions. [2021-07-09 16:51:08,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 17780 transitions. [2021-07-09 16:51:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:51:08,662 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:08,663 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 16:51:08,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:51:08,663 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash -448599139, now seen corresponding path program 1 times [2021-07-09 16:51:08,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:08,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083011756] [2021-07-09 16:51:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:08,773 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 16:51:08,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:08,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083011756] [2021-07-09 16:51:08,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083011756] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:08,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:08,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:51:08,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18993695] [2021-07-09 16:51:08,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:51:08,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:08,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:51:08,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:51:08,776 INFO L87 Difference]: Start difference. First operand 5320 states and 17780 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 16:51:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:08,923 INFO L93 Difference]: Finished difference Result 5768 states and 19144 transitions. [2021-07-09 16:51:08,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:51:08,925 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 16:51:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:08,952 INFO L225 Difference]: With dead ends: 5768 [2021-07-09 16:51:08,952 INFO L226 Difference]: Without dead ends: 4984 [2021-07-09 16:51:08,953 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:51:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2021-07-09 16:51:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 4616. [2021-07-09 16:51:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 3.342145178764897) internal successors, (15424), 4615 states have internal predecessors, (15424), 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 16:51:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 15424 transitions. [2021-07-09 16:51:09,087 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 15424 transitions. Word has length 52 [2021-07-09 16:51:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:09,089 INFO L482 AbstractCegarLoop]: Abstraction has 4616 states and 15424 transitions. [2021-07-09 16:51:09,089 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 16:51:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 15424 transitions. [2021-07-09 16:51:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 16:51:09,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:09,097 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] [2021-07-09 16:51:09,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:51:09,098 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1505957406, now seen corresponding path program 1 times [2021-07-09 16:51:09,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:09,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123985159] [2021-07-09 16:51:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:09,197 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 16:51:09,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:09,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123985159] [2021-07-09 16:51:09,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123985159] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:09,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:09,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:51:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538868037] [2021-07-09 16:51:09,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:51:09,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:51:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:51:09,200 INFO L87 Difference]: Start difference. First operand 4616 states and 15424 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:09,417 INFO L93 Difference]: Finished difference Result 7298 states and 24180 transitions. [2021-07-09 16:51:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 16:51:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-07-09 16:51:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:09,474 INFO L225 Difference]: With dead ends: 7298 [2021-07-09 16:51:09,474 INFO L226 Difference]: Without dead ends: 4350 [2021-07-09 16:51:09,477 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-07-09 16:51:09,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-07-09 16:51:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 4126. [2021-07-09 16:51:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 3.2996363636363637) internal successors, (13611), 4125 states have internal predecessors, (13611), 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 16:51:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 13611 transitions. [2021-07-09 16:51:09,604 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 13611 transitions. Word has length 53 [2021-07-09 16:51:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:09,604 INFO L482 AbstractCegarLoop]: Abstraction has 4126 states and 13611 transitions. [2021-07-09 16:51:09,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 13611 transitions. [2021-07-09 16:51:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:51:09,615 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:09,615 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 16:51:09,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:51:09,616 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:09,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1566342532, now seen corresponding path program 1 times [2021-07-09 16:51:09,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:09,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738069255] [2021-07-09 16:51:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:09,697 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 16:51:09,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:09,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738069255] [2021-07-09 16:51:09,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738069255] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:09,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:09,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:51:09,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811555534] [2021-07-09 16:51:09,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:51:09,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:09,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:51:09,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:51:09,700 INFO L87 Difference]: Start difference. First operand 4126 states and 13611 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 16:51:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:09,810 INFO L93 Difference]: Finished difference Result 5189 states and 16882 transitions. [2021-07-09 16:51:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:51:09,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 16:51:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:09,824 INFO L225 Difference]: With dead ends: 5189 [2021-07-09 16:51:09,825 INFO L226 Difference]: Without dead ends: 3753 [2021-07-09 16:51:09,825 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:51:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2021-07-09 16:51:09,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3753. [2021-07-09 16:51:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3752 states have (on average 3.236673773987207) internal successors, (12144), 3752 states have internal predecessors, (12144), 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 16:51:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 12144 transitions. [2021-07-09 16:51:09,916 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 12144 transitions. Word has length 54 [2021-07-09 16:51:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:09,916 INFO L482 AbstractCegarLoop]: Abstraction has 3753 states and 12144 transitions. [2021-07-09 16:51:09,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 16:51:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 12144 transitions. [2021-07-09 16:51:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:51:09,923 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:09,923 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 16:51:09,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:51:09,923 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:09,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1073595617, now seen corresponding path program 1 times [2021-07-09 16:51:09,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:09,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749000275] [2021-07-09 16:51:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:10,015 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 16:51:10,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:10,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749000275] [2021-07-09 16:51:10,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749000275] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:10,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:10,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:51:10,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398127864] [2021-07-09 16:51:10,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:51:10,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:51:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:51:10,017 INFO L87 Difference]: Start difference. First operand 3753 states and 12144 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 16:51:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:10,181 INFO L93 Difference]: Finished difference Result 3927 states and 12383 transitions. [2021-07-09 16:51:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:51:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 16:51:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:10,189 INFO L225 Difference]: With dead ends: 3927 [2021-07-09 16:51:10,189 INFO L226 Difference]: Without dead ends: 2751 [2021-07-09 16:51:10,189 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:51:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-07-09 16:51:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2751. [2021-07-09 16:51:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2750 states have (on average 3.096363636363636) internal successors, (8515), 2750 states have internal predecessors, (8515), 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 16:51:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 8515 transitions. [2021-07-09 16:51:10,244 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 8515 transitions. Word has length 55 [2021-07-09 16:51:10,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:10,245 INFO L482 AbstractCegarLoop]: Abstraction has 2751 states and 8515 transitions. [2021-07-09 16:51:10,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 16:51:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 8515 transitions. [2021-07-09 16:51:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-09 16:51:10,250 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:10,250 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:51:10,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:51:10,250 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:10,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1221177026, now seen corresponding path program 1 times [2021-07-09 16:51:10,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:10,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245656997] [2021-07-09 16:51:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:10,363 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 16:51:10,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:10,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245656997] [2021-07-09 16:51:10,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245656997] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:10,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:10,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:51:10,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827867206] [2021-07-09 16:51:10,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:51:10,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:51:10,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:51:10,364 INFO L87 Difference]: Start difference. First operand 2751 states and 8515 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:10,499 INFO L93 Difference]: Finished difference Result 2364 states and 7171 transitions. [2021-07-09 16:51:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 16:51:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-09 16:51:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:10,504 INFO L225 Difference]: With dead ends: 2364 [2021-07-09 16:51:10,504 INFO L226 Difference]: Without dead ends: 1644 [2021-07-09 16:51:10,505 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:51:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-07-09 16:51:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1596. [2021-07-09 16:51:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1595 states have (on average 2.9579937304075234) internal successors, (4718), 1595 states have internal predecessors, (4718), 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 16:51:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 4718 transitions. [2021-07-09 16:51:10,532 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 4718 transitions. Word has length 57 [2021-07-09 16:51:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:10,532 INFO L482 AbstractCegarLoop]: Abstraction has 1596 states and 4718 transitions. [2021-07-09 16:51:10,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:51:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 4718 transitions. [2021-07-09 16:51:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-09 16:51:10,535 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:10,535 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, 1] [2021-07-09 16:51:10,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 16:51:10,535 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1581763836, now seen corresponding path program 1 times [2021-07-09 16:51:10,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:10,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259937938] [2021-07-09 16:51:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:10,634 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 16:51:10,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:10,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259937938] [2021-07-09 16:51:10,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259937938] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:10,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:10,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:51:10,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616394579] [2021-07-09 16:51:10,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:51:10,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:10,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:51:10,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:51:10,641 INFO L87 Difference]: Start difference. First operand 1596 states and 4718 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 16:51:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:10,702 INFO L93 Difference]: Finished difference Result 2211 states and 6574 transitions. [2021-07-09 16:51:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:51:10,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-07-09 16:51:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:10,704 INFO L225 Difference]: With dead ends: 2211 [2021-07-09 16:51:10,704 INFO L226 Difference]: Without dead ends: 847 [2021-07-09 16:51:10,705 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:51:10,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-07-09 16:51:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-07-09 16:51:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 2.900709219858156) internal successors, (2454), 846 states have internal predecessors, (2454), 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 16:51:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2454 transitions. [2021-07-09 16:51:10,724 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2454 transitions. Word has length 61 [2021-07-09 16:51:10,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:10,724 INFO L482 AbstractCegarLoop]: Abstraction has 847 states and 2454 transitions. [2021-07-09 16:51:10,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 16:51:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2454 transitions. [2021-07-09 16:51:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-09 16:51:10,726 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:10,726 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, 1] [2021-07-09 16:51:10,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 16:51:10,726 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:10,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1188267042, now seen corresponding path program 2 times [2021-07-09 16:51:10,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:10,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16345365] [2021-07-09 16:51:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:10,819 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 16:51:10,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:10,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16345365] [2021-07-09 16:51:10,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16345365] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:10,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:10,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:51:10,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642807205] [2021-07-09 16:51:10,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:51:10,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:10,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:51:10,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:51:10,821 INFO L87 Difference]: Start difference. First operand 847 states and 2454 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 16:51:10,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:10,881 INFO L93 Difference]: Finished difference Result 1330 states and 3895 transitions. [2021-07-09 16:51:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:51:10,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-07-09 16:51:10,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:10,884 INFO L225 Difference]: With dead ends: 1330 [2021-07-09 16:51:10,884 INFO L226 Difference]: Without dead ends: 805 [2021-07-09 16:51:10,884 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:51:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-07-09 16:51:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2021-07-09 16:51:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.8756218905472637) internal successors, (2312), 804 states have internal predecessors, (2312), 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 16:51:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2312 transitions. [2021-07-09 16:51:10,895 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2312 transitions. Word has length 61 [2021-07-09 16:51:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:10,895 INFO L482 AbstractCegarLoop]: Abstraction has 805 states and 2312 transitions. [2021-07-09 16:51:10,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 16:51:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2312 transitions. [2021-07-09 16:51:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-09 16:51:10,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:51:10,896 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, 1] [2021-07-09 16:51:10,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 16:51:10,897 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:51:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:51:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 78142742, now seen corresponding path program 3 times [2021-07-09 16:51:10,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:51:10,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991028127] [2021-07-09 16:51:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:51:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:51:10,956 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 16:51:10,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:51:10,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991028127] [2021-07-09 16:51:10,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991028127] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:51:10,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:51:10,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:51:10,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809524275] [2021-07-09 16:51:10,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:51:10,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:51:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:51:10,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:51:10,957 INFO L87 Difference]: Start difference. First operand 805 states and 2312 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 16:51:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:51:11,006 INFO L93 Difference]: Finished difference Result 751 states and 2150 transitions. [2021-07-09 16:51:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:51:11,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-07-09 16:51:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:51:11,006 INFO L225 Difference]: With dead ends: 751 [2021-07-09 16:51:11,006 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:51:11,007 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:51:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:51:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:51:11,007 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 16:51:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:51:11,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-09 16:51:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:51:11,007 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:51:11,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 16:51:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:51:11,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:51:11,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 16:51:11,009 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:51:11,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:51:11 BasicIcfg [2021-07-09 16:51:11,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:51:11,011 INFO L168 Benchmark]: Toolchain (without parser) took 4823.77 ms. Allocated memory was 180.4 MB in the beginning and 791.7 MB in the end (delta: 611.3 MB). Free memory was 144.4 MB in the beginning and 564.5 MB in the end (delta: -420.1 MB). Peak memory consumption was 192.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:51:11,011 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 180.4 MB. Free memory was 162.6 MB in the beginning and 162.4 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:51:11,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.96 ms. Allocated memory is still 180.4 MB. Free memory was 144.2 MB in the beginning and 153.5 MB in the end (delta: -9.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-09 16:51:11,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.69 ms. Allocated memory is still 180.4 MB. Free memory was 153.5 MB in the beginning and 151.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:51:11,012 INFO L168 Benchmark]: Boogie Preprocessor took 12.20 ms. Allocated memory is still 180.4 MB. Free memory was 151.8 MB in the beginning and 150.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:51:11,012 INFO L168 Benchmark]: RCFGBuilder took 318.89 ms. Allocated memory is still 180.4 MB. Free memory was 150.4 MB in the beginning and 127.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:51:11,012 INFO L168 Benchmark]: TraceAbstraction took 4091.90 ms. Allocated memory was 180.4 MB in the beginning and 791.7 MB in the end (delta: 611.3 MB). Free memory was 126.6 MB in the beginning and 564.5 MB in the end (delta: -437.9 MB). Peak memory consumption was 173.8 MB. Max. memory is 8.0 GB. [2021-07-09 16:51:11,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 180.4 MB. Free memory was 162.6 MB in the beginning and 162.4 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 355.96 ms. Allocated memory is still 180.4 MB. Free memory was 144.2 MB in the beginning and 153.5 MB in the end (delta: -9.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.69 ms. Allocated memory is still 180.4 MB. Free memory was 153.5 MB in the beginning and 151.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.20 ms. Allocated memory is still 180.4 MB. Free memory was 151.8 MB in the beginning and 150.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 318.89 ms. Allocated memory is still 180.4 MB. Free memory was 150.4 MB in the beginning and 127.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4091.90 ms. Allocated memory was 180.4 MB in the beginning and 791.7 MB in the end (delta: 611.3 MB). Free memory was 126.6 MB in the beginning and 564.5 MB in the end (delta: -437.9 MB). Peak memory consumption was 173.8 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, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4023.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 93.3ms, AutomataDifference: 1723.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 129.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1068 SDtfs, 1425 SDslu, 3632 SDs, 0 SdLazy, 419 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 247.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 998.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6060occurred in iteration=1, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 876.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2082 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.7ms SsaConstructionTime, 175.9ms SatisfiabilityAnalysisTime, 846.8ms InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 2002 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...