./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 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/safe032_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 72b5cfc065b99dee03c9feb5080303d7e06155db ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:52:43,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:52:43,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:52:43,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:52:43,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:52:43,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:52:43,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:52:43,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:52:43,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:52:43,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:52:43,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:52:43,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:52:43,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:52:43,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:52:44,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:52:44,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:52:44,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:52:44,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:52:44,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:52:44,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:52:44,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:52:44,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:52:44,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:52:44,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:52:44,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:52:44,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:52:44,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:52:44,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:52:44,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:52:44,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:52:44,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:52:44,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:52:44,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:52:44,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:52:44,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:52:44,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:52:44,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:52:44,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:52:44,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:52:44,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:52:44,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:52:44,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:52:44,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:52:44,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:52:44,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:52:44,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:52:44,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:52:44,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:52:44,057 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:52:44,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:52:44,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:52:44,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:52:44,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:52:44,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:52:44,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:52:44,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:52:44,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:52:44,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:52:44,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:52:44,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:52:44,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:52:44,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:52:44,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:52:44,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:52:44,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:52:44,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:52:44,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72b5cfc065b99dee03c9feb5080303d7e06155db [2021-09-22 14:52:44,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:52:44,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:52:44,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:52:44,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:52:44,321 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:52:44,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2021-09-22 14:52:44,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a75bccb/46a7d5a8509848309c1f1c01d749ca01/FLAG358b34d99 [2021-09-22 14:52:44,782 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:52:44,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2021-09-22 14:52:44,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a75bccb/46a7d5a8509848309c1f1c01d749ca01/FLAG358b34d99 [2021-09-22 14:52:44,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a75bccb/46a7d5a8509848309c1f1c01d749ca01 [2021-09-22 14:52:44,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:52:44,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:52:44,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:52:44,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:52:44,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:52:44,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:52:44" (1/1) ... [2021-09-22 14:52:44,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb50d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:44, skipping insertion in model container [2021-09-22 14:52:44,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:52:44" (1/1) ... [2021-09-22 14:52:44,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:52:44,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:52:44,982 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i[949,962] [2021-09-22 14:52:45,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:52:45,132 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:52:45,144 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i[949,962] [2021-09-22 14:52:45,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:52:45,206 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:52:45,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45 WrapperNode [2021-09-22 14:52:45,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:52:45,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:52:45,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:52:45,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:52:45,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:52:45,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:52:45,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:52:45,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:52:45,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:52:45,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:52:45,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:52:45,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:52:45,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (1/1) ... [2021-09-22 14:52:45,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:52:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:52:45,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-09-22 14:52:45,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-09-22 14:52:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:52:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:52:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:52:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:52:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-09-22 14:52:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-09-22 14:52:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-09-22 14:52:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-09-22 14:52:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-09-22 14:52:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-09-22 14:52:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:52:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:52:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:52:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:52:45,349 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:52:45,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:52:45,646 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-09-22 14:52:45,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:52:45 BoogieIcfgContainer [2021-09-22 14:52:45,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:52:45,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:52:45,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:52:45,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:52:45,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:52:44" (1/3) ... [2021-09-22 14:52:45,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed99546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:52:45, skipping insertion in model container [2021-09-22 14:52:45,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:45" (2/3) ... [2021-09-22 14:52:45,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed99546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:52:45, skipping insertion in model container [2021-09-22 14:52:45,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:52:45" (3/3) ... [2021-09-22 14:52:45,654 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2021-09-22 14:52:45,658 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:52:45,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:52:45,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:52:45,659 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:52:45,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,690 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,691 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,696 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,696 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,696 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,707 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,707 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,707 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,707 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,710 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,711 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:45,713 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:52:45,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:52:45,760 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-09-22 14:52:45,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-09-22 14:52:45,781 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:52:45,791 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-09-22 14:52:45,794 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-09-22 14:52:45,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-09-22 14:52:45,845 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-09-22 14:52:45,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:52:45,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-09-22 14:52:45,852 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-09-22 14:52:47,680 INFO L131 LiptonReduction]: Checked pairs total: 2649 [2021-09-22 14:52:47,680 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-09-22 14:52:47,685 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-09-22 14:52:47,702 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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) [2021-09-22 14:52:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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) [2021-09-22 14:52:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-09-22 14:52:47,708 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:47,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:47,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:47,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1587310361, now seen corresponding path program 1 times [2021-09-22 14:52:47,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:47,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226486243] [2021-09-22 14:52:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:47,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:47,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:47,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226486243] [2021-09-22 14:52:47,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226486243] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:47,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:47,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:52:47,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657846553] [2021-09-22 14:52:47,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-09-22 14:52:47,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-09-22 14:52:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-09-22 14:52:47,853 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-09-22 14:52:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:47,868 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-09-22 14:52:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-09-22 14:52:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-09-22 14:52:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:47,877 INFO L225 Difference]: With dead ends: 298 [2021-09-22 14:52:47,877 INFO L226 Difference]: Without dead ends: 298 [2021-09-22 14:52:47,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-09-22 14:52:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-09-22 14:52:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-09-22 14:52:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 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) [2021-09-22 14:52:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-09-22 14:52:47,912 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-09-22 14:52:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:47,913 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-09-22 14:52:47,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-09-22 14:52:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-09-22 14:52:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:52:47,914 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:47,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:47,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:52:47,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:47,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1961975826, now seen corresponding path program 1 times [2021-09-22 14:52:47,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:47,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637720033] [2021-09-22 14:52:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:47,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:47,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:47,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637720033] [2021-09-22 14:52:47,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637720033] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:47,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:47,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:52:47,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338864573] [2021-09-22 14:52:47,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:52:47,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:52:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:47,998 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:52:48,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,016 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2021-09-22 14:52:48,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:52:48,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-09-22 14:52:48,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,019 INFO L225 Difference]: With dead ends: 346 [2021-09-22 14:52:48,019 INFO L226 Difference]: Without dead ends: 282 [2021-09-22 14:52:48,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-09-22 14:52:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-09-22 14:52:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.8612099644128115) internal successors, (804), 281 states have internal predecessors, (804), 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) [2021-09-22 14:52:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2021-09-22 14:52:48,029 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2021-09-22 14:52:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,030 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2021-09-22 14:52:48,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:52:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2021-09-22 14:52:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-09-22 14:52:48,031 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:52:48,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,032 INFO L82 PathProgramCache]: Analyzing trace with hash 712821328, now seen corresponding path program 1 times [2021-09-22 14:52:48,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179566600] [2021-09-22 14:52:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179566600] [2021-09-22 14:52:48,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179566600] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:52:48,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23466681] [2021-09-22 14:52:48,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:52:48,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:52:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:48,093 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-09-22 14:52:48,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,130 INFO L93 Difference]: Finished difference Result 433 states and 1209 transitions. [2021-09-22 14:52:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:52:48,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-09-22 14:52:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,132 INFO L225 Difference]: With dead ends: 433 [2021-09-22 14:52:48,132 INFO L226 Difference]: Without dead ends: 288 [2021-09-22 14:52:48,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:52:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-09-22 14:52:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 240. [2021-09-22 14:52:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.5230125523012554) internal successors, (603), 239 states have internal predecessors, (603), 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) [2021-09-22 14:52:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 603 transitions. [2021-09-22 14:52:48,141 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 603 transitions. Word has length 10 [2021-09-22 14:52:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,141 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 603 transitions. [2021-09-22 14:52:48,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-09-22 14:52:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 603 transitions. [2021-09-22 14:52:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-09-22 14:52:48,142 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,143 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:52:48,143 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,143 INFO L82 PathProgramCache]: Analyzing trace with hash 615108403, now seen corresponding path program 1 times [2021-09-22 14:52:48,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069030049] [2021-09-22 14:52:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069030049] [2021-09-22 14:52:48,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069030049] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:52:48,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374692672] [2021-09-22 14:52:48,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:52:48,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:52:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:48,199 INFO L87 Difference]: Start difference. First operand 240 states and 603 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-09-22 14:52:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,225 INFO L93 Difference]: Finished difference Result 269 states and 643 transitions. [2021-09-22 14:52:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:52:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-09-22 14:52:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,226 INFO L225 Difference]: With dead ends: 269 [2021-09-22 14:52:48,226 INFO L226 Difference]: Without dead ends: 198 [2021-09-22 14:52:48,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:52:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-09-22 14:52:48,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2021-09-22 14:52:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.4046242774566475) internal successors, (416), 173 states have internal predecessors, (416), 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) [2021-09-22 14:52:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 416 transitions. [2021-09-22 14:52:48,231 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 416 transitions. Word has length 11 [2021-09-22 14:52:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,231 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 416 transitions. [2021-09-22 14:52:48,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-09-22 14:52:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 416 transitions. [2021-09-22 14:52:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-09-22 14:52:48,233 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:52:48,233 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,233 INFO L82 PathProgramCache]: Analyzing trace with hash 878954739, now seen corresponding path program 1 times [2021-09-22 14:52:48,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806549237] [2021-09-22 14:52:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806549237] [2021-09-22 14:52:48,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806549237] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:52:48,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982751388] [2021-09-22 14:52:48,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:52:48,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:52:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:48,283 INFO L87 Difference]: Start difference. First operand 174 states and 416 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-09-22 14:52:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,322 INFO L93 Difference]: Finished difference Result 258 states and 590 transitions. [2021-09-22 14:52:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:52:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-09-22 14:52:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,323 INFO L225 Difference]: With dead ends: 258 [2021-09-22 14:52:48,324 INFO L226 Difference]: Without dead ends: 176 [2021-09-22 14:52:48,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:52:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-09-22 14:52:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 148. [2021-09-22 14:52:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.3469387755102042) internal successors, (345), 147 states have internal predecessors, (345), 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) [2021-09-22 14:52:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 345 transitions. [2021-09-22 14:52:48,328 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 345 transitions. Word has length 12 [2021-09-22 14:52:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,328 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 345 transitions. [2021-09-22 14:52:48,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-09-22 14:52:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 345 transitions. [2021-09-22 14:52:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-09-22 14:52:48,329 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:52:48,330 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1477768804, now seen corresponding path program 1 times [2021-09-22 14:52:48,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651124878] [2021-09-22 14:52:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651124878] [2021-09-22 14:52:48,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651124878] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:52:48,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925793376] [2021-09-22 14:52:48,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:52:48,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:52:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:48,369 INFO L87 Difference]: Start difference. First operand 148 states and 345 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-09-22 14:52:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,385 INFO L93 Difference]: Finished difference Result 159 states and 337 transitions. [2021-09-22 14:52:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:52:48,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-09-22 14:52:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,386 INFO L225 Difference]: With dead ends: 159 [2021-09-22 14:52:48,386 INFO L226 Difference]: Without dead ends: 124 [2021-09-22 14:52:48,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-09-22 14:52:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-09-22 14:52:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.1219512195121952) internal successors, (261), 123 states have internal predecessors, (261), 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) [2021-09-22 14:52:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2021-09-22 14:52:48,389 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 13 [2021-09-22 14:52:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,389 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2021-09-22 14:52:48,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-09-22 14:52:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2021-09-22 14:52:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:52:48,390 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-09-22 14:52:48,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,391 INFO L82 PathProgramCache]: Analyzing trace with hash -320512200, now seen corresponding path program 1 times [2021-09-22 14:52:48,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021708387] [2021-09-22 14:52:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021708387] [2021-09-22 14:52:48,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021708387] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:52:48,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286852374] [2021-09-22 14:52:48,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:52:48,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:52:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:48,429 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-09-22 14:52:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,449 INFO L93 Difference]: Finished difference Result 110 states and 215 transitions. [2021-09-22 14:52:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:52:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-09-22 14:52:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,450 INFO L225 Difference]: With dead ends: 110 [2021-09-22 14:52:48,450 INFO L226 Difference]: Without dead ends: 89 [2021-09-22 14:52:48,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:52:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-09-22 14:52:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-09-22 14:52:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.9545454545454546) internal successors, (172), 88 states have internal predecessors, (172), 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) [2021-09-22 14:52:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 172 transitions. [2021-09-22 14:52:48,452 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 172 transitions. Word has length 14 [2021-09-22 14:52:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,452 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 172 transitions. [2021-09-22 14:52:48,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-09-22 14:52:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 172 transitions. [2021-09-22 14:52:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-09-22 14:52:48,453 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-09-22 14:52:48,453 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1796704576, now seen corresponding path program 1 times [2021-09-22 14:52:48,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121973006] [2021-09-22 14:52:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121973006] [2021-09-22 14:52:48,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121973006] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-09-22 14:52:48,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926691211] [2021-09-22 14:52:48,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-09-22 14:52:48,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-09-22 14:52:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:52:48,501 INFO L87 Difference]: Start difference. First operand 89 states and 172 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-09-22 14:52:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,526 INFO L93 Difference]: Finished difference Result 118 states and 222 transitions. [2021-09-22 14:52:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:52:48,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-09-22 14:52:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,527 INFO L225 Difference]: With dead ends: 118 [2021-09-22 14:52:48,527 INFO L226 Difference]: Without dead ends: 82 [2021-09-22 14:52:48,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-09-22 14:52:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-09-22 14:52:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-09-22 14:52:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.759493670886076) internal successors, (139), 79 states have internal predecessors, (139), 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) [2021-09-22 14:52:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 139 transitions. [2021-09-22 14:52:48,529 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 139 transitions. Word has length 16 [2021-09-22 14:52:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,529 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 139 transitions. [2021-09-22 14:52:48,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-09-22 14:52:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 139 transitions. [2021-09-22 14:52:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-09-22 14:52:48,529 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:48,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-09-22 14:52:48,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:48,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1824818012, now seen corresponding path program 1 times [2021-09-22 14:52:48,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:48,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723022080] [2021-09-22 14:52:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:48,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:48,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:48,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723022080] [2021-09-22 14:52:48,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723022080] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:48,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:48,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-09-22 14:52:48,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896902670] [2021-09-22 14:52:48,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-09-22 14:52:48,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-09-22 14:52:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:52:48,566 INFO L87 Difference]: Start difference. First operand 80 states and 139 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-09-22 14:52:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:48,580 INFO L93 Difference]: Finished difference Result 70 states and 124 transitions. [2021-09-22 14:52:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:52:48,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-09-22 14:52:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:48,580 INFO L225 Difference]: With dead ends: 70 [2021-09-22 14:52:48,580 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:52:48,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:52:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:52:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:52:48,581 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) [2021-09-22 14:52:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:52:48,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-09-22 14:52:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:48,581 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:52:48,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-09-22 14:52:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:52:48,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:52:48,583 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:52:48,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:52:48,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:52:48,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-09-22 14:52:48,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-09-22 14:52:48,586 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:52:48,586 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:52:48,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:52:48 BasicIcfg [2021-09-22 14:52:48,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:52:48,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:52:48,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:52:48,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:52:48,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:52:45" (3/4) ... [2021-09-22 14:52:48,590 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:52:48,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-09-22 14:52:48,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-09-22 14:52:48,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-09-22 14:52:48,596 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-09-22 14:52:48,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-09-22 14:52:48,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:52:48,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:52:48,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:52:48,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:52:48,615 INFO L168 Benchmark]: Toolchain (without parser) took 3805.87 ms. Allocated memory was 69.2 MB in the beginning and 125.8 MB in the end (delta: 56.6 MB). Free memory was 48.8 MB in the beginning and 51.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:48,616 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 69.2 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:52:48,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.10 ms. Allocated memory is still 69.2 MB. Free memory was 48.6 MB in the beginning and 43.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:48,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.34 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 41.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:48,616 INFO L168 Benchmark]: Boogie Preprocessor took 36.45 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 39.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:52:48,616 INFO L168 Benchmark]: RCFGBuilder took 354.19 ms. Allocated memory was 69.2 MB in the beginning and 102.8 MB in the end (delta: 33.6 MB). Free memory was 39.6 MB in the beginning and 79.5 MB in the end (delta: -39.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:48,617 INFO L168 Benchmark]: TraceAbstraction took 2938.02 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 78.8 MB in the beginning and 53.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:48,617 INFO L168 Benchmark]: Witness Printer took 26.56 ms. Allocated memory is still 125.8 MB. Free memory was 53.8 MB in the beginning and 51.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:48,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 69.2 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 398.10 ms. Allocated memory is still 69.2 MB. Free memory was 48.6 MB in the beginning and 43.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.34 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 41.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.45 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 39.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 354.19 ms. Allocated memory was 69.2 MB in the beginning and 102.8 MB in the end (delta: 33.6 MB). Free memory was 39.6 MB in the beginning and 79.5 MB in the end (delta: -39.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2938.02 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 78.8 MB in the beginning and 53.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. * Witness Printer took 26.56 ms. Allocated memory is still 125.8 MB. Free memory was 53.8 MB in the beginning and 51.7 MB in the end (delta: 2.1 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 Lipton Reduction Statistics: ReductionTime: 1886.2ms, 91 PlacesBefore, 32 PlacesAfterwards, 83 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 2649 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1380, positive: 1302, positive conditional: 0, positive unconditional: 1302, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 990, positive: 956, positive conditional: 0, positive unconditional: 956, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 990, positive: 948, positive conditional: 0, positive unconditional: 948, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1380, positive: 346, positive conditional: 0, positive unconditional: 346, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 990, unknown conditional: 0, unknown unconditional: 990] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2833.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 11.3ms, AutomataDifference: 248.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1942.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 209 SDtfs, 227 SDslu, 338 SDs, 0 SdLazy, 156 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 129.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 102 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.0ms SsaConstructionTime, 111.0ms SatisfiabilityAnalysisTime, 313.1ms InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-09-22 14:52:48,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...