/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:39:28,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:39:28,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:39:28,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:39:28,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 23:39:28,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 23:39:28,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 23:39:28,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 23:39:28,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 23:39:28,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 23:39:28,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 23:39:28,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 23:39:28,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 23:39:28,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 23:39:28,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 23:39:28,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 23:39:28,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 23:39:28,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:39:28,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:39:28,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:39:28,725 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-Separate.epf [2021-05-21 23:39:28,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:39:28,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:39:28,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:39:28,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:39:28,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:39:28,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:39:28,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:39:28,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:39:28,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:39:28,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:39:28,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:39:28,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:39:28,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:39:28,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:39:28,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:39:28,754 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:39:28,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:39:28,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:39:28,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:39:28,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:39:28,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:39:28,996 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:39:28,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2021-05-21 23:39:29,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0adf823f/6c2817cfed2a4cfebefd1bccbb44be4d/FLAG2f95f4a6f [2021-05-21 23:39:29,802 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:39:29,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2021-05-21 23:39:29,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0adf823f/6c2817cfed2a4cfebefd1bccbb44be4d/FLAG2f95f4a6f [2021-05-21 23:39:30,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0adf823f/6c2817cfed2a4cfebefd1bccbb44be4d [2021-05-21 23:39:30,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:39:30,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:39:30,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:39:30,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:39:30,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:39:30,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e372eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30, skipping insertion in model container [2021-05-21 23:39:30,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:39:30,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:39:30,254 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i[950,963] [2021-05-21 23:39:30,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:39:30,404 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:39:30,412 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i[950,963] [2021-05-21 23:39:30,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:39:30,494 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:39:30,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30 WrapperNode [2021-05-21 23:39:30,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:39:30,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:39:30,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:39:30,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:39:30,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:39:30,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:39:30,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:39:30,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:39:30,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (1/1) ... [2021-05-21 23:39:30,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:39:30,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:39:30,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:39:30,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:39:30,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (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 [2021-05-21 23:39:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:39:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:39:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:39:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:39:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:39:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:39:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:39:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:39:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:39:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:39:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:39:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:39:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:39:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:39:30,660 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:39:30,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:39:30,949 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:39:30,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:39:30 BoogieIcfgContainer [2021-05-21 23:39:30,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:39:30,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:39:30,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:39:30,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:39:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:39:30" (1/3) ... [2021-05-21 23:39:30,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5932ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:39:30, skipping insertion in model container [2021-05-21 23:39:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:30" (2/3) ... [2021-05-21 23:39:30,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5932ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:39:30, skipping insertion in model container [2021-05-21 23:39:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:39:30" (3/3) ... [2021-05-21 23:39:30,955 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2021-05-21 23:39:30,959 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:39:30,959 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:39:30,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:39:30,960 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,996 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,996 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,996 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:30,998 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:39:31,012 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:39:31,024 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:39:31,024 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:39:31,024 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:39:31,024 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:39:31,024 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:39:31,024 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:39:31,024 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:39:31,024 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:39:31,031 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:39:31,613 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:39:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:39:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 23:39:31,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:31,679 INFO L521 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] [2021-05-21 23:39:31,680 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:31,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1593178653, now seen corresponding path program 1 times [2021-05-21 23:39:31,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:31,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001112634] [2021-05-21 23:39:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:31,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:31,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001112634] [2021-05-21 23:39:31,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001112634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:31,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:31,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:31,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51362689] [2021-05-21 23:39:31,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:31,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:32,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:32,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:32,033 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:32,342 INFO L93 Difference]: Finished difference Result 13343 states and 46433 transitions. [2021-05-21 23:39:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:32,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-05-21 23:39:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:32,385 INFO L225 Difference]: With dead ends: 13343 [2021-05-21 23:39:32,385 INFO L226 Difference]: Without dead ends: 5048 [2021-05-21 23:39:32,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2021-05-21 23:39:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5048. [2021-05-21 23:39:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5047 states have (on average 3.408559540320983) internal successors, (17203), 5047 states have internal predecessors, (17203), 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) [2021-05-21 23:39:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 17203 transitions. [2021-05-21 23:39:32,665 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 17203 transitions. Word has length 49 [2021-05-21 23:39:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:32,668 INFO L482 AbstractCegarLoop]: Abstraction has 5048 states and 17203 transitions. [2021-05-21 23:39:32,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 17203 transitions. [2021-05-21 23:39:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 23:39:32,682 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:32,682 INFO L521 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] [2021-05-21 23:39:32,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:39:32,683 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:32,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2100147364, now seen corresponding path program 1 times [2021-05-21 23:39:32,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:32,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550092659] [2021-05-21 23:39:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:32,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:32,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550092659] [2021-05-21 23:39:32,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550092659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:32,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:32,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:32,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361268620] [2021-05-21 23:39:32,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:32,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:32,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:32,843 INFO L87 Difference]: Start difference. First operand 5048 states and 17203 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) [2021-05-21 23:39:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:32,995 INFO L93 Difference]: Finished difference Result 5594 states and 18847 transitions. [2021-05-21 23:39:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:32,995 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 [2021-05-21 23:39:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:33,014 INFO L225 Difference]: With dead ends: 5594 [2021-05-21 23:39:33,014 INFO L226 Difference]: Without dead ends: 4334 [2021-05-21 23:39:33,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-05-21 23:39:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334. [2021-05-21 23:39:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.3637202861758597) internal successors, (14575), 4333 states have internal predecessors, (14575), 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) [2021-05-21 23:39:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14575 transitions. [2021-05-21 23:39:33,121 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 14575 transitions. Word has length 51 [2021-05-21 23:39:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:33,121 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 14575 transitions. [2021-05-21 23:39:33,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 14575 transitions. [2021-05-21 23:39:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 23:39:33,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:33,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:39:33,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:39:33,129 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:33,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1690028140, now seen corresponding path program 1 times [2021-05-21 23:39:33,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:33,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966322282] [2021-05-21 23:39:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:33,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:33,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966322282] [2021-05-21 23:39:33,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966322282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:33,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:33,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:33,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680179235] [2021-05-21 23:39:33,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:33,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:33,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:33,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:33,245 INFO L87 Difference]: Start difference. First operand 4334 states and 14575 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:33,376 INFO L93 Difference]: Finished difference Result 6742 states and 22512 transitions. [2021-05-21 23:39:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:33,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 23:39:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:33,391 INFO L225 Difference]: With dead ends: 6742 [2021-05-21 23:39:33,391 INFO L226 Difference]: Without dead ends: 3158 [2021-05-21 23:39:33,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2021-05-21 23:39:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3158. [2021-05-21 23:39:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3157 states have (on average 3.3268926195755464) internal successors, (10503), 3157 states have internal predecessors, (10503), 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) [2021-05-21 23:39:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 10503 transitions. [2021-05-21 23:39:33,460 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 10503 transitions. Word has length 52 [2021-05-21 23:39:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:33,461 INFO L482 AbstractCegarLoop]: Abstraction has 3158 states and 10503 transitions. [2021-05-21 23:39:33,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 10503 transitions. [2021-05-21 23:39:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 23:39:33,486 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:33,486 INFO L521 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] [2021-05-21 23:39:33,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:39:33,486 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:33,486 INFO L82 PathProgramCache]: Analyzing trace with hash 792894823, now seen corresponding path program 1 times [2021-05-21 23:39:33,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:33,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267041567] [2021-05-21 23:39:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:33,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:33,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267041567] [2021-05-21 23:39:33,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267041567] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:33,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:33,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:33,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498971711] [2021-05-21 23:39:33,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:33,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:33,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:33,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:33,551 INFO L87 Difference]: Start difference. First operand 3158 states and 10503 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:33,646 INFO L93 Difference]: Finished difference Result 3962 states and 12986 transitions. [2021-05-21 23:39:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-05-21 23:39:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:33,659 INFO L225 Difference]: With dead ends: 3962 [2021-05-21 23:39:33,659 INFO L226 Difference]: Without dead ends: 2870 [2021-05-21 23:39:33,660 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-05-21 23:39:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-05-21 23:39:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2869 states have (on average 3.2732659463227605) internal successors, (9391), 2869 states have internal predecessors, (9391), 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) [2021-05-21 23:39:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 9391 transitions. [2021-05-21 23:39:33,720 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 9391 transitions. Word has length 54 [2021-05-21 23:39:33,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:33,722 INFO L482 AbstractCegarLoop]: Abstraction has 2870 states and 9391 transitions. [2021-05-21 23:39:33,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 9391 transitions. [2021-05-21 23:39:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:39:33,727 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:33,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:39:33,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:39:33,730 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:33,730 INFO L82 PathProgramCache]: Analyzing trace with hash -173034250, now seen corresponding path program 1 times [2021-05-21 23:39:33,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:33,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075289186] [2021-05-21 23:39:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:33,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:33,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075289186] [2021-05-21 23:39:33,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075289186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:33,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:33,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:39:33,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605782421] [2021-05-21 23:39:33,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:39:33,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:39:33,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:39:33,838 INFO L87 Difference]: Start difference. First operand 2870 states and 9391 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:33,967 INFO L93 Difference]: Finished difference Result 2978 states and 9484 transitions. [2021-05-21 23:39:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:39:33,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 23:39:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:33,973 INFO L225 Difference]: With dead ends: 2978 [2021-05-21 23:39:33,973 INFO L226 Difference]: Without dead ends: 2078 [2021-05-21 23:39:33,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:39:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-05-21 23:39:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078. [2021-05-21 23:39:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2077 states have (on average 3.1376986037554166) internal successors, (6517), 2077 states have internal predecessors, (6517), 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) [2021-05-21 23:39:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 6517 transitions. [2021-05-21 23:39:34,018 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 6517 transitions. Word has length 55 [2021-05-21 23:39:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:34,018 INFO L482 AbstractCegarLoop]: Abstraction has 2078 states and 6517 transitions. [2021-05-21 23:39:34,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 6517 transitions. [2021-05-21 23:39:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 23:39:34,021 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:34,022 INFO L521 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] [2021-05-21 23:39:34,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:39:34,022 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:34,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2002222771, now seen corresponding path program 1 times [2021-05-21 23:39:34,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:34,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163496592] [2021-05-21 23:39:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:34,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:34,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163496592] [2021-05-21 23:39:34,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163496592] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:34,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:34,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:39:34,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562989229] [2021-05-21 23:39:34,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:39:34,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:34,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:39:34,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:39:34,098 INFO L87 Difference]: Start difference. First operand 2078 states and 6517 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:34,241 INFO L93 Difference]: Finished difference Result 1718 states and 5254 transitions. [2021-05-21 23:39:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:39:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-05-21 23:39:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:34,246 INFO L225 Difference]: With dead ends: 1718 [2021-05-21 23:39:34,246 INFO L226 Difference]: Without dead ends: 1250 [2021-05-21 23:39:34,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:39:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-05-21 23:39:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2021-05-21 23:39:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.008006405124099) internal successors, (3757), 1249 states have internal predecessors, (3757), 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) [2021-05-21 23:39:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 3757 transitions. [2021-05-21 23:39:34,273 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 3757 transitions. Word has length 57 [2021-05-21 23:39:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:34,273 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 3757 transitions. [2021-05-21 23:39:34,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 3757 transitions. [2021-05-21 23:39:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:39:34,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:34,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:39:34,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:39:34,276 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:34,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2022716047, now seen corresponding path program 1 times [2021-05-21 23:39:34,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:34,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645099501] [2021-05-21 23:39:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:34,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:34,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645099501] [2021-05-21 23:39:34,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645099501] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:34,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:34,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:39:34,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53928914] [2021-05-21 23:39:34,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:39:34,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:34,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:39:34,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:39:34,341 INFO L87 Difference]: Start difference. First operand 1250 states and 3757 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:34,406 INFO L93 Difference]: Finished difference Result 1793 states and 5391 transitions. [2021-05-21 23:39:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:39:34,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:39:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:34,409 INFO L225 Difference]: With dead ends: 1793 [2021-05-21 23:39:34,409 INFO L226 Difference]: Without dead ends: 895 [2021-05-21 23:39:34,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:34,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-05-21 23:39:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-05-21 23:39:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 2.9217002237136467) internal successors, (2612), 894 states have internal predecessors, (2612), 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) [2021-05-21 23:39:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2612 transitions. [2021-05-21 23:39:34,425 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2612 transitions. Word has length 61 [2021-05-21 23:39:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:34,426 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 2612 transitions. [2021-05-21 23:39:34,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2612 transitions. [2021-05-21 23:39:34,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:39:34,428 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:34,428 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:39:34,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:39:34,428 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:34,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1946374265, now seen corresponding path program 2 times [2021-05-21 23:39:34,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:34,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174023203] [2021-05-21 23:39:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:34,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:34,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174023203] [2021-05-21 23:39:34,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174023203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:34,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:34,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:39:34,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737781598] [2021-05-21 23:39:34,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:39:34,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:34,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:39:34,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:39:34,517 INFO L87 Difference]: Start difference. First operand 895 states and 2612 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:34,567 INFO L93 Difference]: Finished difference Result 841 states and 2450 transitions. [2021-05-21 23:39:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:39:34,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:39:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:34,568 INFO L225 Difference]: With dead ends: 841 [2021-05-21 23:39:34,568 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:39:34,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:39:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:39:34,568 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) [2021-05-21 23:39:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:39:34,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-05-21 23:39:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:34,568 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:39:34,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:39:34,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:39:34,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 23:39:34,569 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:39:34,570 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:39:34,571 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:39:34,571 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:39:34,571 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:39:34,571 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:39:34,571 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:39:34,571 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:39:34,571 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:39:34,571 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:39:34,574 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:39:34,791 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:39:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:39:34,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:39:34,831 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:39:34,832 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:39:34,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:39:34 BasicIcfg [2021-05-21 23:39:34,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:39:34,834 INFO L168 Benchmark]: Toolchain (without parser) took 4755.52 ms. Allocated memory was 358.6 MB in the beginning and 765.5 MB in the end (delta: 406.8 MB). Free memory was 320.1 MB in the beginning and 515.6 MB in the end (delta: -195.5 MB). Peak memory consumption was 212.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:34,835 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 358.6 MB. Free memory was 338.4 MB in the beginning and 338.3 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:39:34,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.53 ms. Allocated memory is still 358.6 MB. Free memory was 319.9 MB in the beginning and 319.0 MB in the end (delta: 864.7 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:34,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.76 ms. Allocated memory is still 358.6 MB. Free memory was 319.0 MB in the beginning and 316.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:34,838 INFO L168 Benchmark]: Boogie Preprocessor took 33.11 ms. Allocated memory is still 358.6 MB. Free memory was 316.9 MB in the beginning and 315.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:39:34,838 INFO L168 Benchmark]: RCFGBuilder took 372.07 ms. Allocated memory is still 358.6 MB. Free memory was 315.9 MB in the beginning and 290.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:34,839 INFO L168 Benchmark]: TraceAbstraction took 3882.23 ms. Allocated memory was 358.6 MB in the beginning and 765.5 MB in the end (delta: 406.8 MB). Free memory was 289.6 MB in the beginning and 515.6 MB in the end (delta: -225.9 MB). Peak memory consumption was 182.0 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:34,843 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 358.6 MB. Free memory was 338.4 MB in the beginning and 338.3 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 413.53 ms. Allocated memory is still 358.6 MB. Free memory was 319.9 MB in the beginning and 319.0 MB in the end (delta: 864.7 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.76 ms. Allocated memory is still 358.6 MB. Free memory was 319.0 MB in the beginning and 316.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.11 ms. Allocated memory is still 358.6 MB. Free memory was 316.9 MB in the beginning and 315.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 372.07 ms. Allocated memory is still 358.6 MB. Free memory was 315.9 MB in the beginning and 290.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3882.23 ms. Allocated memory was 358.6 MB in the beginning and 765.5 MB in the end (delta: 406.8 MB). Free memory was 289.6 MB in the beginning and 515.6 MB in the end (delta: -225.9 MB). Peak memory consumption was 182.0 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3546.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 122.2ms, AutomataDifference: 1223.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 588.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 839 SDtfs, 1086 SDslu, 2677 SDs, 0 SdLazy, 313 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 194.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 779.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 591.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.6ms SsaConstructionTime, 207.3ms SatisfiabilityAnalysisTime, 609.8ms InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 1122 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 260.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 40.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 219.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...