/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:42:20,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:42:20,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:42:20,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 11:42:20,668 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 [2021-08-21 11:42:20,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:42:20,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:42:20,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:42:20,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:42:20,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:42:20,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:42:20,700 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:42:20,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:42:20,700 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:42:20,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:42:20,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:42:20,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:42:20,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:42:20,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:42:20,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:42:20,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:42:20,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:42:20,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:42:20,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:42:20,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:42:20,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:42:20,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:42:20,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:42:20,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:42:20,980 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:42:20,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-08-21 11:42:21,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5e6ca6e/b46ae3c6ee79476aac66e48a9f3ec0d5/FLAG71c6069c6 [2021-08-21 11:42:21,462 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:42:21,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-08-21 11:42:21,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5e6ca6e/b46ae3c6ee79476aac66e48a9f3ec0d5/FLAG71c6069c6 [2021-08-21 11:42:21,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5e6ca6e/b46ae3c6ee79476aac66e48a9f3ec0d5 [2021-08-21 11:42:21,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:42:21,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:42:21,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:42:21,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:42:21,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:42:21,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f7c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21, skipping insertion in model container [2021-08-21 11:42:21,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:42:21,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:42:21,704 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-08-21 11:42:21,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:42:21,846 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:42:21,854 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-08-21 11:42:21,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:42:21,914 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:42:21,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21 WrapperNode [2021-08-21 11:42:21,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:42:21,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:42:21,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:42:21,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:42:21,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:42:21,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:42:21,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:42:21,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:42:21,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:42:21,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:42:21,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:42:21,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:42:21,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (1/1) ... [2021-08-21 11:42:21,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:42:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:42:21,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 11:42:21,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 11:42:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:42:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 11:42:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:42:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:42:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 11:42:22,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 11:42:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 11:42:22,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 11:42:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 11:42:22,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 11:42:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:42:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 11:42:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:42:22,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:42:22,025 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:42:22,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:42:22,332 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 11:42:22,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:42:22 BoogieIcfgContainer [2021-08-21 11:42:22,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:42:22,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:42:22,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:42:22,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:42:22,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:42:21" (1/3) ... [2021-08-21 11:42:22,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e33ef9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:42:22, skipping insertion in model container [2021-08-21 11:42:22,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:21" (2/3) ... [2021-08-21 11:42:22,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e33ef9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:42:22, skipping insertion in model container [2021-08-21 11:42:22,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:42:22" (3/3) ... [2021-08-21 11:42:22,339 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-08-21 11:42:22,345 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:42:22,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:42:22,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 11:42:22,345 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:42:22,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,378 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,394 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:42:22,399 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 11:42:22,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:42:22,442 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 11:42:22,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 11:42:22,453 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-08-21 11:42:22,622 INFO L133 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) [2021-08-21 11:42:22,641 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) [2021-08-21 11:42:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-21 11:42:22,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:22,693 INFO L512 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] [2021-08-21 11:42:22,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash -206144659, now seen corresponding path program 1 times [2021-08-21 11:42:22,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:22,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960387598] [2021-08-21 11:42:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:22,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:23,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:23,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960387598] [2021-08-21 11:42:23,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960387598] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:23,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:23,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:42:23,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749888731] [2021-08-21 11:42:23,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:42:23,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:42:23,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:42:23,105 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 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-08-21 11:42:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:23,420 INFO L93 Difference]: Finished difference Result 9668 states and 32692 transitions. [2021-08-21 11:42:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:42:23,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2021-08-21 11:42:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:23,460 INFO L225 Difference]: With dead ends: 9668 [2021-08-21 11:42:23,461 INFO L226 Difference]: Without dead ends: 5758 [2021-08-21 11:42:23,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:42:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2021-08-21 11:42:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4708. [2021-08-21 11:42:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 3.2345442957297643) internal successors, (15225), 4707 states have internal predecessors, (15225), 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) [2021-08-21 11:42:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 15225 transitions. [2021-08-21 11:42:23,693 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 15225 transitions. Word has length 49 [2021-08-21 11:42:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:23,694 INFO L470 AbstractCegarLoop]: Abstraction has 4708 states and 15225 transitions. [2021-08-21 11:42:23,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-08-21 11:42:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 15225 transitions. [2021-08-21 11:42:23,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-21 11:42:23,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:23,709 INFO L512 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] [2021-08-21 11:42:23,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:42:23,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:23,712 INFO L82 PathProgramCache]: Analyzing trace with hash 595593868, now seen corresponding path program 1 times [2021-08-21 11:42:23,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:23,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798505849] [2021-08-21 11:42:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:23,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:23,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:23,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798505849] [2021-08-21 11:42:23,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798505849] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:23,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:23,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:42:23,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204465378] [2021-08-21 11:42:23,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:42:23,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:42:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:42:23,814 INFO L87 Difference]: Start difference. First operand 4708 states and 15225 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) [2021-08-21 11:42:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:23,962 INFO L93 Difference]: Finished difference Result 5058 states and 16225 transitions. [2021-08-21 11:42:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 11:42:23,962 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 [2021-08-21 11:42:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:23,978 INFO L225 Difference]: With dead ends: 5058 [2021-08-21 11:42:23,978 INFO L226 Difference]: Without dead ends: 3478 [2021-08-21 11:42:23,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:42:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-08-21 11:42:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 3462. [2021-08-21 11:42:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3461 states have (on average 3.2008090147356256) internal successors, (11078), 3461 states have internal predecessors, (11078), 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) [2021-08-21 11:42:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 11078 transitions. [2021-08-21 11:42:24,061 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 11078 transitions. Word has length 51 [2021-08-21 11:42:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:24,062 INFO L470 AbstractCegarLoop]: Abstraction has 3462 states and 11078 transitions. [2021-08-21 11:42:24,062 INFO L471 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) [2021-08-21 11:42:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 11078 transitions. [2021-08-21 11:42:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 11:42:24,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:24,068 INFO L512 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] [2021-08-21 11:42:24,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:42:24,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1306196191, now seen corresponding path program 1 times [2021-08-21 11:42:24,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:24,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393620515] [2021-08-21 11:42:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:24,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:24,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:24,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393620515] [2021-08-21 11:42:24,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393620515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:24,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:24,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:42:24,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063400287] [2021-08-21 11:42:24,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:42:24,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:42:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:42:24,211 INFO L87 Difference]: Start difference. First operand 3462 states and 11078 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:24,497 INFO L93 Difference]: Finished difference Result 5397 states and 16991 transitions. [2021-08-21 11:42:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:42:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 11:42:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:24,518 INFO L225 Difference]: With dead ends: 5397 [2021-08-21 11:42:24,519 INFO L226 Difference]: Without dead ends: 4277 [2021-08-21 11:42:24,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 240.5ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:42:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-08-21 11:42:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3158. [2021-08-21 11:42:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3157 states have (on average 3.165663604687995) internal successors, (9994), 3157 states have internal predecessors, (9994), 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) [2021-08-21 11:42:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 9994 transitions. [2021-08-21 11:42:24,612 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 9994 transitions. Word has length 54 [2021-08-21 11:42:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:24,613 INFO L470 AbstractCegarLoop]: Abstraction has 3158 states and 9994 transitions. [2021-08-21 11:42:24,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 9994 transitions. [2021-08-21 11:42:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 11:42:24,620 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:24,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:42:24,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:42:24,620 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1792194162, now seen corresponding path program 1 times [2021-08-21 11:42:24,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:24,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084718300] [2021-08-21 11:42:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:24,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:24,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:24,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084718300] [2021-08-21 11:42:24,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084718300] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:24,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:24,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:42:24,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398248347] [2021-08-21 11:42:24,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:42:24,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:42:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:42:24,793 INFO L87 Difference]: Start difference. First operand 3158 states and 9994 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:24,924 INFO L93 Difference]: Finished difference Result 3566 states and 11148 transitions. [2021-08-21 11:42:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 11:42:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-21 11:42:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:24,932 INFO L225 Difference]: With dead ends: 3566 [2021-08-21 11:42:24,932 INFO L226 Difference]: Without dead ends: 1806 [2021-08-21 11:42:24,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:42:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-08-21 11:42:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1806. [2021-08-21 11:42:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 3.001662049861496) internal successors, (5418), 1805 states have internal predecessors, (5418), 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) [2021-08-21 11:42:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 5418 transitions. [2021-08-21 11:42:24,965 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 5418 transitions. Word has length 56 [2021-08-21 11:42:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:24,965 INFO L470 AbstractCegarLoop]: Abstraction has 1806 states and 5418 transitions. [2021-08-21 11:42:24,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 5418 transitions. [2021-08-21 11:42:24,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:42:24,968 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:24,968 INFO L512 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] [2021-08-21 11:42:24,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:42:24,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:24,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:24,969 INFO L82 PathProgramCache]: Analyzing trace with hash -918252882, now seen corresponding path program 1 times [2021-08-21 11:42:24,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:24,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871374221] [2021-08-21 11:42:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:24,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:25,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:25,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871374221] [2021-08-21 11:42:25,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871374221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:25,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:25,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:42:25,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572660003] [2021-08-21 11:42:25,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:42:25,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:42:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:42:25,044 INFO L87 Difference]: Start difference. First operand 1806 states and 5418 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:25,112 INFO L93 Difference]: Finished difference Result 3289 states and 9908 transitions. [2021-08-21 11:42:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 11:42:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:42:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:25,119 INFO L225 Difference]: With dead ends: 3289 [2021-08-21 11:42:25,119 INFO L226 Difference]: Without dead ends: 2036 [2021-08-21 11:42:25,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-21 11:42:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-08-21 11:42:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1576. [2021-08-21 11:42:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 2.9638095238095237) internal successors, (4668), 1575 states have internal predecessors, (4668), 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) [2021-08-21 11:42:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4668 transitions. [2021-08-21 11:42:25,149 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4668 transitions. Word has length 57 [2021-08-21 11:42:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:25,149 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 4668 transitions. [2021-08-21 11:42:25,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4668 transitions. [2021-08-21 11:42:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:42:25,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:25,152 INFO L512 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] [2021-08-21 11:42:25,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:42:25,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:25,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1179616686, now seen corresponding path program 2 times [2021-08-21 11:42:25,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:25,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323387920] [2021-08-21 11:42:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:25,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:25,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:25,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323387920] [2021-08-21 11:42:25,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323387920] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:25,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:25,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:42:25,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783510995] [2021-08-21 11:42:25,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:42:25,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:42:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:42:25,214 INFO L87 Difference]: Start difference. First operand 1576 states and 4668 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-08-21 11:42:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:25,290 INFO L93 Difference]: Finished difference Result 1797 states and 5273 transitions. [2021-08-21 11:42:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 11:42:25,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 [2021-08-21 11:42:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:25,297 INFO L225 Difference]: With dead ends: 1797 [2021-08-21 11:42:25,297 INFO L226 Difference]: Without dead ends: 1421 [2021-08-21 11:42:25,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:42:25,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2021-08-21 11:42:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2021-08-21 11:42:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 2.9140845070422534) internal successors, (4138), 1420 states have internal predecessors, (4138), 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) [2021-08-21 11:42:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4138 transitions. [2021-08-21 11:42:25,331 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4138 transitions. Word has length 57 [2021-08-21 11:42:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:25,331 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 4138 transitions. [2021-08-21 11:42:25,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-08-21 11:42:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4138 transitions. [2021-08-21 11:42:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 11:42:25,333 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:25,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:42:25,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 11:42:25,333 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:25,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1878635497, now seen corresponding path program 1 times [2021-08-21 11:42:25,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:25,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873803137] [2021-08-21 11:42:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:25,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:25,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:25,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873803137] [2021-08-21 11:42:25,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873803137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:25,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:25,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:42:25,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109396838] [2021-08-21 11:42:25,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:42:25,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:42:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:42:25,455 INFO L87 Difference]: Start difference. First operand 1421 states and 4138 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:25,532 INFO L93 Difference]: Finished difference Result 1307 states and 3699 transitions. [2021-08-21 11:42:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:42:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-21 11:42:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:25,535 INFO L225 Difference]: With dead ends: 1307 [2021-08-21 11:42:25,535 INFO L226 Difference]: Without dead ends: 1031 [2021-08-21 11:42:25,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:42:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-08-21 11:42:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-08-21 11:42:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 2.774757281553398) internal successors, (2858), 1030 states have internal predecessors, (2858), 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) [2021-08-21 11:42:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2858 transitions. [2021-08-21 11:42:25,556 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2858 transitions. Word has length 58 [2021-08-21 11:42:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:25,557 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 2858 transitions. [2021-08-21 11:42:25,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2858 transitions. [2021-08-21 11:42:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-21 11:42:25,558 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:42:25,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:42:25,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:42:25,559 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:42:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:42:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1514318356, now seen corresponding path program 1 times [2021-08-21 11:42:25,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:42:25,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838607948] [2021-08-21 11:42:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:42:25,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:42:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:42:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:42:25,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:42:25,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838607948] [2021-08-21 11:42:25,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838607948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:42:25,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:42:25,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:42:25,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191327165] [2021-08-21 11:42:25,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:42:25,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:42:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:42:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:42:25,669 INFO L87 Difference]: Start difference. First operand 1031 states and 2858 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:42:25,726 INFO L93 Difference]: Finished difference Result 734 states and 1967 transitions. [2021-08-21 11:42:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 11:42:25,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-08-21 11:42:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:42:25,726 INFO L225 Difference]: With dead ends: 734 [2021-08-21 11:42:25,726 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 11:42:25,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:42:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 11:42:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 11:42:25,727 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) [2021-08-21 11:42:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 11:42:25,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-08-21 11:42:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:42:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 11:42:25,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:42:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 11:42:25,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 11:42:25,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:42:25,730 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:42:25,730 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:42:25,730 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 11:42:25,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 11:42:25,733 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:42:25,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:42:25,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:42:25 BasicIcfg [2021-08-21 11:42:25,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:42:25,735 INFO L168 Benchmark]: Toolchain (without parser) took 4235.30 ms. Allocated memory was 220.2 MB in the beginning and 466.6 MB in the end (delta: 246.4 MB). Free memory was 184.3 MB in the beginning and 371.0 MB in the end (delta: -186.7 MB). Peak memory consumption was 60.4 MB. Max. memory is 8.0 GB. [2021-08-21 11:42:25,735 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 220.2 MB. Free memory is still 202.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:42:25,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.50 ms. Allocated memory is still 220.2 MB. Free memory was 184.1 MB in the beginning and 192.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-21 11:42:25,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.25 ms. Allocated memory is still 220.2 MB. Free memory was 192.9 MB in the beginning and 191.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:42:25,736 INFO L168 Benchmark]: Boogie Preprocessor took 14.49 ms. Allocated memory is still 220.2 MB. Free memory was 191.3 MB in the beginning and 189.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:42:25,736 INFO L168 Benchmark]: RCFGBuilder took 375.60 ms. Allocated memory is still 220.2 MB. Free memory was 189.8 MB in the beginning and 165.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:42:25,736 INFO L168 Benchmark]: TraceAbstraction took 3399.05 ms. Allocated memory was 220.2 MB in the beginning and 466.6 MB in the end (delta: 246.4 MB). Free memory was 165.1 MB in the beginning and 371.0 MB in the end (delta: -205.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:42:25,737 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 220.2 MB. Free memory is still 202.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 413.50 ms. Allocated memory is still 220.2 MB. Free memory was 184.1 MB in the beginning and 192.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.25 ms. Allocated memory is still 220.2 MB. Free memory was 192.9 MB in the beginning and 191.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.49 ms. Allocated memory is still 220.2 MB. Free memory was 191.3 MB in the beginning and 189.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 375.60 ms. Allocated memory is still 220.2 MB. Free memory was 189.8 MB in the beginning and 165.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3399.05 ms. Allocated memory was 220.2 MB in the beginning and 466.6 MB in the end (delta: 246.4 MB). Free memory was 165.1 MB in the beginning and 371.0 MB in the end (delta: -205.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3298.0ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 101.0ms, AutomataDifference: 1300.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 180.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 781 SDtfs, 1368 SDslu, 2590 SDs, 0 SdLazy, 308 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 204.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 866.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 505.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 2645 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.0ms SsaConstructionTime, 128.3ms SatisfiabilityAnalysisTime, 887.3ms InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 433 ConstructedInterpolants, 0 QuantifiedInterpolants, 1657 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 11:42:25,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...