/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:30:33,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:30:33,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:30:33,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:30:33,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:30:33,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:30:33,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:30:33,488 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 [2021-03-10 17:30:33,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:30:33,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:30:33,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:30:33,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:30:33,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:30:33,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:30:33,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:30:33,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:30:33,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:30:33,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:30:33,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:30:33,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:30:33,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:30:33,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:30:33,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:30:33,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:30:33,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:30:33,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:30:33,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:30:33,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:30:33,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:30:33,733 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:30:33,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-03-10 17:30:33,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4706571b/fe3efce450a94bc6886ecd36f5a4af07/FLAG4db3af7cf [2021-03-10 17:30:34,171 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:30:34,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-03-10 17:30:34,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4706571b/fe3efce450a94bc6886ecd36f5a4af07/FLAG4db3af7cf [2021-03-10 17:30:34,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4706571b/fe3efce450a94bc6886ecd36f5a4af07 [2021-03-10 17:30:34,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:30:34,527 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:30:34,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:34,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:30:34,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:30:34,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68501f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34, skipping insertion in model container [2021-03-10 17:30:34,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:30:34,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:30:34,653 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i[949,962] [2021-03-10 17:30:34,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:34,769 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:30:34,776 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i[949,962] [2021-03-10 17:30:34,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:34,835 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:30:34,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34 WrapperNode [2021-03-10 17:30:34,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:34,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:34,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:30:34,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:30:34,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:34,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:30:34,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:30:34,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:30:34,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (1/1) ... [2021-03-10 17:30:34,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:30:34,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:30:34,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:30:34,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:30:34,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (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 [2021-03-10 17:30:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:30:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:30:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:30:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:30:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:30:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:30:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:30:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:30:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:30:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:30:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:30:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:30:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:30:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:30:34,937 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:30:35,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:30:35,280 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:30:35,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:35 BoogieIcfgContainer [2021-03-10 17:30:35,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:30:35,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:30:35,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:30:35,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:30:35,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:30:34" (1/3) ... [2021-03-10 17:30:35,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b4be1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:35, skipping insertion in model container [2021-03-10 17:30:35,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:34" (2/3) ... [2021-03-10 17:30:35,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b4be1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:35, skipping insertion in model container [2021-03-10 17:30:35,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:35" (3/3) ... [2021-03-10 17:30:35,289 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2021-03-10 17:30:35,293 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:30:35,294 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:30:35,297 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:30:35,297 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:30:35,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,331 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,332 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,339 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,339 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:35,345 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:30:35,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:30:35,378 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:30:35,378 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:30:35,378 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:30:35,379 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:30:35,379 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:30:35,379 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:30:35,379 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:30:35,379 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:30:35,390 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-03-10 17:30:35,762 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-03-10 17:30:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-03-10 17:30:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:30:35,816 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:35,817 INFO L519 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] [2021-03-10 17:30:35,817 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:35,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1730311568, now seen corresponding path program 1 times [2021-03-10 17:30:35,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:35,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628501464] [2021-03-10 17:30:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:36,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628501464] [2021-03-10 17:30:36,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:36,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641870951] [2021-03-10 17:30:36,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:36,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:36,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:36,175 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-03-10 17:30:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:36,603 INFO L93 Difference]: Finished difference Result 17599 states and 60723 transitions. [2021-03-10 17:30:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-03-10 17:30:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:36,647 INFO L225 Difference]: With dead ends: 17599 [2021-03-10 17:30:36,647 INFO L226 Difference]: Without dead ends: 5457 [2021-03-10 17:30:36,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 198.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-03-10 17:30:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4527. [2021-03-10 17:30:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4527 states, 4526 states have (on average 3.3336279275298275) internal successors, (15088), 4526 states have internal predecessors, (15088), 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) [2021-03-10 17:30:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4527 states to 4527 states and 15088 transitions. [2021-03-10 17:30:36,827 INFO L78 Accepts]: Start accepts. Automaton has 4527 states and 15088 transitions. Word has length 39 [2021-03-10 17:30:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:36,828 INFO L480 AbstractCegarLoop]: Abstraction has 4527 states and 15088 transitions. [2021-03-10 17:30:36,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-03-10 17:30:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4527 states and 15088 transitions. [2021-03-10 17:30:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:30:36,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:36,834 INFO L519 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] [2021-03-10 17:30:36,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:30:36,834 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1861372495, now seen corresponding path program 1 times [2021-03-10 17:30:36,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:36,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897741708] [2021-03-10 17:30:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897741708] [2021-03-10 17:30:37,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:37,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:37,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323980160] [2021-03-10 17:30:37,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:37,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:37,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:37,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:37,011 INFO L87 Difference]: Start difference. First operand 4527 states and 15088 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-03-10 17:30:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:37,261 INFO L93 Difference]: Finished difference Result 6741 states and 22106 transitions. [2021-03-10 17:30:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:37,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-03-10 17:30:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:37,284 INFO L225 Difference]: With dead ends: 6741 [2021-03-10 17:30:37,284 INFO L226 Difference]: Without dead ends: 5229 [2021-03-10 17:30:37,284 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2021-03-10 17:30:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 3995. [2021-03-10 17:30:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3994 states have (on average 3.303955933900851) internal successors, (13196), 3994 states have internal predecessors, (13196), 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) [2021-03-10 17:30:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 13196 transitions. [2021-03-10 17:30:37,409 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 13196 transitions. Word has length 41 [2021-03-10 17:30:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:37,409 INFO L480 AbstractCegarLoop]: Abstraction has 3995 states and 13196 transitions. [2021-03-10 17:30:37,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-03-10 17:30:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 13196 transitions. [2021-03-10 17:30:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:30:37,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:37,419 INFO L519 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] [2021-03-10 17:30:37,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:30:37,419 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1441768206, now seen corresponding path program 1 times [2021-03-10 17:30:37,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:37,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910352590] [2021-03-10 17:30:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:37,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910352590] [2021-03-10 17:30:37,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:37,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:37,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496341163] [2021-03-10 17:30:37,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:37,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:37,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:37,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:37,569 INFO L87 Difference]: Start difference. First operand 3995 states and 13196 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:30:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:37,769 INFO L93 Difference]: Finished difference Result 6165 states and 20088 transitions. [2021-03-10 17:30:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:30:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-03-10 17:30:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:37,798 INFO L225 Difference]: With dead ends: 6165 [2021-03-10 17:30:37,799 INFO L226 Difference]: Without dead ends: 4953 [2021-03-10 17:30:37,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:30:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2021-03-10 17:30:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 3708. [2021-03-10 17:30:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3707 states have (on average 3.2827083895333153) internal successors, (12169), 3707 states have internal predecessors, (12169), 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) [2021-03-10 17:30:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 12169 transitions. [2021-03-10 17:30:37,883 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 12169 transitions. Word has length 43 [2021-03-10 17:30:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:37,883 INFO L480 AbstractCegarLoop]: Abstraction has 3708 states and 12169 transitions. [2021-03-10 17:30:37,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:30:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 12169 transitions. [2021-03-10 17:30:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:30:37,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:37,889 INFO L519 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] [2021-03-10 17:30:37,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:30:37,889 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:37,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2114944062, now seen corresponding path program 1 times [2021-03-10 17:30:37,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:37,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518561142] [2021-03-10 17:30:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:37,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518561142] [2021-03-10 17:30:37,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:37,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:30:37,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220210495] [2021-03-10 17:30:37,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:30:37,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:37,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:30:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:30:37,985 INFO L87 Difference]: Start difference. First operand 3708 states and 12169 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-03-10 17:30:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:38,079 INFO L93 Difference]: Finished difference Result 4220 states and 13765 transitions. [2021-03-10 17:30:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2021-03-10 17:30:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:38,090 INFO L225 Difference]: With dead ends: 4220 [2021-03-10 17:30:38,090 INFO L226 Difference]: Without dead ends: 3660 [2021-03-10 17:30:38,090 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2021-03-10 17:30:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3660. [2021-03-10 17:30:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.2765783000819897) internal successors, (11989), 3659 states have internal predecessors, (11989), 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) [2021-03-10 17:30:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 11989 transitions. [2021-03-10 17:30:38,169 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 11989 transitions. Word has length 44 [2021-03-10 17:30:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:38,169 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 11989 transitions. [2021-03-10 17:30:38,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-03-10 17:30:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 11989 transitions. [2021-03-10 17:30:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:30:38,176 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:38,176 INFO L519 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] [2021-03-10 17:30:38,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:30:38,176 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:38,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1006789228, now seen corresponding path program 1 times [2021-03-10 17:30:38,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:38,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451816710] [2021-03-10 17:30:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:38,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451816710] [2021-03-10 17:30:38,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:38,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:38,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249936867] [2021-03-10 17:30:38,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:38,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:38,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:38,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:38,265 INFO L87 Difference]: Start difference. First operand 3660 states and 11989 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:38,372 INFO L93 Difference]: Finished difference Result 6613 states and 21449 transitions. [2021-03-10 17:30:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:38,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:30:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:38,382 INFO L225 Difference]: With dead ends: 6613 [2021-03-10 17:30:38,382 INFO L226 Difference]: Without dead ends: 4636 [2021-03-10 17:30:38,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:30:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-03-10 17:30:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 3660. [2021-03-10 17:30:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.263186663022684) internal successors, (11940), 3659 states have internal predecessors, (11940), 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) [2021-03-10 17:30:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 11940 transitions. [2021-03-10 17:30:38,456 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 11940 transitions. Word has length 45 [2021-03-10 17:30:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:38,457 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 11940 transitions. [2021-03-10 17:30:38,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 11940 transitions. [2021-03-10 17:30:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:30:38,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:38,463 INFO L519 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] [2021-03-10 17:30:38,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:30:38,464 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:38,464 INFO L82 PathProgramCache]: Analyzing trace with hash -357807042, now seen corresponding path program 2 times [2021-03-10 17:30:38,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:38,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366997318] [2021-03-10 17:30:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:38,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366997318] [2021-03-10 17:30:38,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:38,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071258482] [2021-03-10 17:30:38,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:38,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:38,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:38,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:38,574 INFO L87 Difference]: Start difference. First operand 3660 states and 11940 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:38,660 INFO L93 Difference]: Finished difference Result 4720 states and 15159 transitions. [2021-03-10 17:30:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:30:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:30:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:38,665 INFO L225 Difference]: With dead ends: 4720 [2021-03-10 17:30:38,666 INFO L226 Difference]: Without dead ends: 2253 [2021-03-10 17:30:38,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:30:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2021-03-10 17:30:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2061. [2021-03-10 17:30:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2060 states have (on average 3.096601941747573) internal successors, (6379), 2060 states have internal predecessors, (6379), 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) [2021-03-10 17:30:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 6379 transitions. [2021-03-10 17:30:38,702 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 6379 transitions. Word has length 45 [2021-03-10 17:30:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:38,702 INFO L480 AbstractCegarLoop]: Abstraction has 2061 states and 6379 transitions. [2021-03-10 17:30:38,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:38,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 6379 transitions. [2021-03-10 17:30:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:30:38,705 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:38,705 INFO L519 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] [2021-03-10 17:30:38,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:30:38,705 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1279949411, now seen corresponding path program 1 times [2021-03-10 17:30:38,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:38,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504296458] [2021-03-10 17:30:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:38,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504296458] [2021-03-10 17:30:38,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:38,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:30:38,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929901583] [2021-03-10 17:30:38,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:30:38,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:38,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:30:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:30:38,782 INFO L87 Difference]: Start difference. First operand 2061 states and 6379 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-03-10 17:30:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:38,870 INFO L93 Difference]: Finished difference Result 2538 states and 7737 transitions. [2021-03-10 17:30:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:38,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-03-10 17:30:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:38,874 INFO L225 Difference]: With dead ends: 2538 [2021-03-10 17:30:38,874 INFO L226 Difference]: Without dead ends: 1842 [2021-03-10 17:30:38,875 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 70.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2021-03-10 17:30:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1842. [2021-03-10 17:30:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 3.033134166214014) internal successors, (5584), 1841 states have internal predecessors, (5584), 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) [2021-03-10 17:30:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 5584 transitions. [2021-03-10 17:30:38,907 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 5584 transitions. Word has length 46 [2021-03-10 17:30:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:38,907 INFO L480 AbstractCegarLoop]: Abstraction has 1842 states and 5584 transitions. [2021-03-10 17:30:38,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-03-10 17:30:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 5584 transitions. [2021-03-10 17:30:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:30:38,909 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:38,909 INFO L519 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] [2021-03-10 17:30:38,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:30:38,912 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:38,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1991887540, now seen corresponding path program 1 times [2021-03-10 17:30:38,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:38,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606725152] [2021-03-10 17:30:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:38,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606725152] [2021-03-10 17:30:38,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:38,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:38,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567849598] [2021-03-10 17:30:38,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:38,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:38,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:38,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:38,972 INFO L87 Difference]: Start difference. First operand 1842 states and 5584 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-03-10 17:30:39,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:39,071 INFO L93 Difference]: Finished difference Result 1779 states and 5218 transitions. [2021-03-10 17:30:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:30:39,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 47 [2021-03-10 17:30:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:39,074 INFO L225 Difference]: With dead ends: 1779 [2021-03-10 17:30:39,075 INFO L226 Difference]: Without dead ends: 1231 [2021-03-10 17:30:39,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:30:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-03-10 17:30:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-03-10 17:30:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 2.8601626016260164) internal successors, (3518), 1230 states have internal predecessors, (3518), 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) [2021-03-10 17:30:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 3518 transitions. [2021-03-10 17:30:39,124 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 3518 transitions. Word has length 47 [2021-03-10 17:30:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:39,125 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 3518 transitions. [2021-03-10 17:30:39,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-03-10 17:30:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 3518 transitions. [2021-03-10 17:30:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:30:39,127 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:39,127 INFO L519 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] [2021-03-10 17:30:39,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:30:39,127 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1686260499, now seen corresponding path program 1 times [2021-03-10 17:30:39,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:39,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473317291] [2021-03-10 17:30:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:39,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473317291] [2021-03-10 17:30:39,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:39,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:30:39,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969272788] [2021-03-10 17:30:39,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:30:39,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:39,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:30:39,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:30:39,201 INFO L87 Difference]: Start difference. First operand 1231 states and 3518 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-03-10 17:30:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:39,264 INFO L93 Difference]: Finished difference Result 799 states and 2195 transitions. [2021-03-10 17:30:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:30:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 [2021-03-10 17:30:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:39,265 INFO L225 Difference]: With dead ends: 799 [2021-03-10 17:30:39,265 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:30:39,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:30:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:30:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:30:39,265 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) [2021-03-10 17:30:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:30:39,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-03-10 17:30:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:39,266 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:30:39,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-03-10 17:30:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:30:39,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:30:39,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:30:39,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:30:39 BasicIcfg [2021-03-10 17:30:39,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:30:39,270 INFO L168 Benchmark]: Toolchain (without parser) took 4745.44 ms. Allocated memory was 255.9 MB in the beginning and 847.2 MB in the end (delta: 591.4 MB). Free memory was 234.8 MB in the beginning and 711.5 MB in the end (delta: -476.6 MB). Peak memory consumption was 113.3 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:39,270 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:30:39,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.51 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.2 MB in the beginning and 338.3 MB in the end (delta: -104.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:39,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.53 ms. Allocated memory is still 375.4 MB. Free memory was 338.3 MB in the beginning and 336.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:39,273 INFO L168 Benchmark]: Boogie Preprocessor took 12.62 ms. Allocated memory is still 375.4 MB. Free memory was 336.2 MB in the beginning and 334.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:39,273 INFO L168 Benchmark]: RCFGBuilder took 411.09 ms. Allocated memory is still 375.4 MB. Free memory was 334.8 MB in the beginning and 313.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:39,274 INFO L168 Benchmark]: TraceAbstraction took 3984.23 ms. Allocated memory was 375.4 MB in the beginning and 847.2 MB in the end (delta: 471.9 MB). Free memory was 312.5 MB in the beginning and 711.5 MB in the end (delta: -398.9 MB). Peak memory consumption was 75.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:30:39,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 308.51 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.2 MB in the beginning and 338.3 MB in the end (delta: -104.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.53 ms. Allocated memory is still 375.4 MB. Free memory was 338.3 MB in the beginning and 336.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.62 ms. Allocated memory is still 375.4 MB. Free memory was 336.2 MB in the beginning and 334.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 411.09 ms. Allocated memory is still 375.4 MB. Free memory was 334.8 MB in the beginning and 313.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3984.23 ms. Allocated memory was 375.4 MB in the beginning and 847.2 MB in the end (delta: 471.9 MB). Free memory was 312.5 MB in the beginning and 711.5 MB in the end (delta: -398.9 MB). Peak memory consumption was 75.0 MB. Max. memory is 16.0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3890.3ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 92.5ms, AutomataDifference: 1579.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 382.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 905 SDtfs, 1444 SDslu, 3243 SDs, 0 SdLazy, 441 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 277.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 970.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 644.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 4577 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.9ms SsaConstructionTime, 133.0ms SatisfiabilityAnalysisTime, 833.0ms InterpolantComputationTime, 399 NumberOfCodeBlocks, 399 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...