./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da2a21ed04669479605d762389aa47053d0acc3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:35:03,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:35:03,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:35:03,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:35:03,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:35:03,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:35:03,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:35:03,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:35:03,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:35:03,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:35:03,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:35:03,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:35:03,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:35:03,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:35:03,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:35:03,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:35:03,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:35:03,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:35:03,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:35:03,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:35:03,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:35:03,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:35:03,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:35:03,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:35:03,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:35:03,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:35:03,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:35:03,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:35:03,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:35:03,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:35:03,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:35:03,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:35:03,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:35:03,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:35:03,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:35:03,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:35:03,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:35:03,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:35:03,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:35:03,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:35:03,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:35:03,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:35:03,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:35:03,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:35:03,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:35:03,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:35:03,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:35:03,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:35:03,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:35:03,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:35:03,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:35:03,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:35:03,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:35:03,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:35:03,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:35:03,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:35:03,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:35:03,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:35:03,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:35:03,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:35:03,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:35:03,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:35:03,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:35:03,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:35:03,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:35:03,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:35:03,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:35:03,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:35:03,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:35:03,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:35:03,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:35:03,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da2a21ed04669479605d762389aa47053d0acc3 [2020-10-26 00:35:04,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:35:04,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:35:04,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:35:04,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:35:04,409 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:35:04,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2020-10-26 00:35:04,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d299202/1a1fed7d45824850a456480404375a83/FLAG20932b0e6 [2020-10-26 00:35:05,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:35:05,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2020-10-26 00:35:05,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d299202/1a1fed7d45824850a456480404375a83/FLAG20932b0e6 [2020-10-26 00:35:05,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d299202/1a1fed7d45824850a456480404375a83 [2020-10-26 00:35:05,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:35:05,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:35:05,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:35:05,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:35:05,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:35:05,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:35:05" (1/1) ... [2020-10-26 00:35:05,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2b56a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:05, skipping insertion in model container [2020-10-26 00:35:05,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:35:05" (1/1) ... [2020-10-26 00:35:05,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:35:05,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:35:05,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:35:05,965 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:35:06,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:35:06,126 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:35:06,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06 WrapperNode [2020-10-26 00:35:06,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:35:06,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:35:06,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:35:06,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:35:06,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:35:06,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:35:06,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:35:06,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:35:06,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... [2020-10-26 00:35:06,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:35:06,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:35:06,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:35:06,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:35:06,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:35:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:35:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:35:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:35:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:35:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:35:06,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:35:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:35:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:35:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:35:06,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:35:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-26 00:35:06,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-26 00:35:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:35:06,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:35:06,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:35:06,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:35:06,308 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:35:06,821 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:35:06,821 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:35:06,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:35:06 BoogieIcfgContainer [2020-10-26 00:35:06,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:35:06,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:35:06,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:35:06,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:35:06,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:35:05" (1/3) ... [2020-10-26 00:35:06,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abd36c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:35:06, skipping insertion in model container [2020-10-26 00:35:06,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:06" (2/3) ... [2020-10-26 00:35:06,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abd36c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:35:06, skipping insertion in model container [2020-10-26 00:35:06,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:35:06" (3/3) ... [2020-10-26 00:35:06,834 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-10-26 00:35:06,852 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:35:06,852 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:35:06,858 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:35:06,859 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:35:06,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,892 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,892 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,897 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,900 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,900 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,900 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,900 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,901 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,901 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,906 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,907 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,925 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,931 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,931 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,931 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,932 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:06,939 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:35:06,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-26 00:35:06,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:35:06,979 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:35:06,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:35:06,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:35:06,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:35:06,980 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:35:06,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:35:06,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:35:06,995 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:35:06,998 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-26 00:35:07,001 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-26 00:35:07,003 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-10-26 00:35:07,062 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-26 00:35:07,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:35:07,068 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-10-26 00:35:07,072 INFO L116 LiptonReduction]: Number of co-enabled transitions 2256 [2020-10-26 00:35:09,564 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-26 00:35:09,695 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-26 00:35:09,756 INFO L131 LiptonReduction]: Checked pairs total: 4418 [2020-10-26 00:35:09,757 INFO L133 LiptonReduction]: Total number of compositions: 80 [2020-10-26 00:35:09,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-26 00:35:09,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-26 00:35:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-26 00:35:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:35:09,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:09,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:09,874 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash 481695671, now seen corresponding path program 1 times [2020-10-26 00:35:09,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:09,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194517223] [2020-10-26 00:35:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:10,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194517223] [2020-10-26 00:35:10,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:10,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:35:10,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558949556] [2020-10-26 00:35:10,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:35:10,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:10,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:35:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:35:10,114 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-26 00:35:10,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:10,202 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-26 00:35:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:35:10,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-26 00:35:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:10,262 INFO L225 Difference]: With dead ends: 1450 [2020-10-26 00:35:10,262 INFO L226 Difference]: Without dead ends: 1194 [2020-10-26 00:35:10,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:35:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-26 00:35:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-26 00:35:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-26 00:35:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-26 00:35:10,448 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-26 00:35:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:10,449 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-26 00:35:10,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:35:10,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-26 00:35:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:35:10,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:10,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:10,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:35:10,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2047662136, now seen corresponding path program 1 times [2020-10-26 00:35:10,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:10,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943661763] [2020-10-26 00:35:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:10,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943661763] [2020-10-26 00:35:10,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:35:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51182086] [2020-10-26 00:35:10,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:35:10,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:10,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:35:10,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:35:10,637 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-26 00:35:10,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:10,749 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-26 00:35:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:35:10,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:35:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:10,761 INFO L225 Difference]: With dead ends: 1322 [2020-10-26 00:35:10,761 INFO L226 Difference]: Without dead ends: 1066 [2020-10-26 00:35:10,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-26 00:35:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-26 00:35:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-26 00:35:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-26 00:35:10,821 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-26 00:35:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:10,821 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-26 00:35:10,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:35:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-26 00:35:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:35:10,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:10,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:10,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:35:10,824 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash -947021519, now seen corresponding path program 1 times [2020-10-26 00:35:10,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:10,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506132153] [2020-10-26 00:35:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:10,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506132153] [2020-10-26 00:35:10,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:10,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:35:10,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522090574] [2020-10-26 00:35:10,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:35:10,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:10,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:35:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:35:10,916 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-26 00:35:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:10,964 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-26 00:35:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:35:10,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:35:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:10,974 INFO L225 Difference]: With dead ends: 1162 [2020-10-26 00:35:10,974 INFO L226 Difference]: Without dead ends: 970 [2020-10-26 00:35:10,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-26 00:35:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-26 00:35:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-26 00:35:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-26 00:35:11,021 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-26 00:35:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:11,021 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-26 00:35:11,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:35:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-26 00:35:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:35:11,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:11,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:11,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:35:11,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:11,027 INFO L82 PathProgramCache]: Analyzing trace with hash 639493830, now seen corresponding path program 1 times [2020-10-26 00:35:11,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:11,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833389275] [2020-10-26 00:35:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:11,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833389275] [2020-10-26 00:35:11,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:11,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:35:11,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439031968] [2020-10-26 00:35:11,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:35:11,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:11,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:35:11,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:11,151 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-26 00:35:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:11,216 INFO L93 Difference]: Finished difference Result 1162 states and 3980 transitions. [2020-10-26 00:35:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:35:11,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:35:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:11,222 INFO L225 Difference]: With dead ends: 1162 [2020-10-26 00:35:11,222 INFO L226 Difference]: Without dead ends: 508 [2020-10-26 00:35:11,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:35:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-26 00:35:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-26 00:35:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-26 00:35:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1638 transitions. [2020-10-26 00:35:11,244 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1638 transitions. Word has length 13 [2020-10-26 00:35:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:11,245 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1638 transitions. [2020-10-26 00:35:11,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:35:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1638 transitions. [2020-10-26 00:35:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:35:11,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:11,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:11,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:35:11,247 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:11,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:11,248 INFO L82 PathProgramCache]: Analyzing trace with hash 380154805, now seen corresponding path program 1 times [2020-10-26 00:35:11,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:11,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588929021] [2020-10-26 00:35:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:11,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588929021] [2020-10-26 00:35:11,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:11,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:35:11,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896276811] [2020-10-26 00:35:11,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:35:11,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:11,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:35:11,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:35:11,302 INFO L87 Difference]: Start difference. First operand 508 states and 1638 transitions. Second operand 4 states. [2020-10-26 00:35:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:11,326 INFO L93 Difference]: Finished difference Result 544 states and 1704 transitions. [2020-10-26 00:35:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:35:11,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-26 00:35:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:11,331 INFO L225 Difference]: With dead ends: 544 [2020-10-26 00:35:11,331 INFO L226 Difference]: Without dead ends: 472 [2020-10-26 00:35:11,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-26 00:35:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-10-26 00:35:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-26 00:35:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-10-26 00:35:11,351 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-10-26 00:35:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:11,352 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-10-26 00:35:11,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:35:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-10-26 00:35:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:35:11,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:11,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:11,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:35:11,354 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2067323682, now seen corresponding path program 1 times [2020-10-26 00:35:11,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:11,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378818473] [2020-10-26 00:35:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:11,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378818473] [2020-10-26 00:35:11,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:11,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:35:11,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985007461] [2020-10-26 00:35:11,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:35:11,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:35:11,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:11,433 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-10-26 00:35:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:11,495 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-10-26 00:35:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:35:11,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 00:35:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:11,498 INFO L225 Difference]: With dead ends: 586 [2020-10-26 00:35:11,498 INFO L226 Difference]: Without dead ends: 262 [2020-10-26 00:35:11,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:35:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-26 00:35:11,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-10-26 00:35:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-26 00:35:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-10-26 00:35:11,511 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-10-26 00:35:11,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:11,511 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-10-26 00:35:11,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:35:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-10-26 00:35:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:35:11,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:11,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:11,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:35:11,513 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:11,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:11,513 INFO L82 PathProgramCache]: Analyzing trace with hash 253681578, now seen corresponding path program 1 times [2020-10-26 00:35:11,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:11,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664549982] [2020-10-26 00:35:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:11,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664549982] [2020-10-26 00:35:11,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:11,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:35:11,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822087278] [2020-10-26 00:35:11,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:35:11,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:11,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:35:11,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:11,573 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-10-26 00:35:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:11,623 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-10-26 00:35:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:35:11,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 00:35:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:11,625 INFO L225 Difference]: With dead ends: 358 [2020-10-26 00:35:11,626 INFO L226 Difference]: Without dead ends: 154 [2020-10-26 00:35:11,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:35:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-26 00:35:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-26 00:35:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-26 00:35:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-26 00:35:11,633 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-26 00:35:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:11,634 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-26 00:35:11,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:35:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-26 00:35:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:35:11,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:11,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:11,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:35:11,636 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2117772472, now seen corresponding path program 1 times [2020-10-26 00:35:11,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:11,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409670426] [2020-10-26 00:35:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:11,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409670426] [2020-10-26 00:35:11,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:11,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:35:11,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080326106] [2020-10-26 00:35:11,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:35:11,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:11,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:35:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:35:11,725 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-26 00:35:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:11,768 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-26 00:35:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:35:11,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:35:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:11,770 INFO L225 Difference]: With dead ends: 130 [2020-10-26 00:35:11,770 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:35:11,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:35:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:35:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:35:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:35:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:35:11,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-26 00:35:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:11,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:35:11,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:35:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:35:11,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:35:11,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:35:11,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:35:11 BasicIcfg [2020-10-26 00:35:11,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:35:11,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:35:11,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:35:11,779 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:35:11,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:35:06" (3/4) ... [2020-10-26 00:35:11,784 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:35:11,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:35:11,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:35:11,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:35:11,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-10-26 00:35:11,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-10-26 00:35:11,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:35:11,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:35:11,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:35:11,849 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:35:11,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:35:11,852 INFO L168 Benchmark]: Toolchain (without parser) took 6471.78 ms. Allocated memory was 60.8 MB in the beginning and 169.9 MB in the end (delta: 109.1 MB). Free memory was 41.0 MB in the beginning and 89.1 MB in the end (delta: -48.1 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:11,852 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory is still 22.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:35:11,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.96 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 32.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:11,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.31 ms. Allocated memory is still 60.8 MB. Free memory was 32.9 MB in the beginning and 30.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:11,854 INFO L168 Benchmark]: Boogie Preprocessor took 30.97 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 29.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:35:11,855 INFO L168 Benchmark]: RCFGBuilder took 608.57 ms. Allocated memory is still 60.8 MB. Free memory was 29.4 MB in the beginning and 24.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:11,856 INFO L168 Benchmark]: TraceAbstraction took 4951.94 ms. Allocated memory was 60.8 MB in the beginning and 169.9 MB in the end (delta: 109.1 MB). Free memory was 23.6 MB in the beginning and 92.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:11,857 INFO L168 Benchmark]: Witness Printer took 71.31 ms. Allocated memory is still 169.9 MB. Free memory was 92.3 MB in the beginning and 89.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:11,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory is still 22.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.96 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 32.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.31 ms. Allocated memory is still 60.8 MB. Free memory was 32.9 MB in the beginning and 30.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.97 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 29.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 608.57 ms. Allocated memory is still 60.8 MB. Free memory was 29.4 MB in the beginning and 24.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4951.94 ms. Allocated memory was 60.8 MB in the beginning and 169.9 MB in the end (delta: 109.1 MB). Free memory was 23.6 MB in the beginning and 92.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. * Witness Printer took 71.31 ms. Allocated memory is still 169.9 MB. Free memory was 92.3 MB in the beginning and 89.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1644 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 172 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 105 PlacesBefore, 41 PlacesAfterwards, 95 TransitionsBefore, 29 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4418 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 232 SDtfs, 257 SDslu, 326 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...