./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl/time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl/time-subst.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 be3f3a7b80cc81e6f6bd3fca48fa3fed45858e5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 18:39:29,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 18:39:29,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 18:39:29,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 18:39:29,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 18:39:29,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 18:39:29,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 18:39:29,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 18:39:29,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 18:39:29,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 18:39:29,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 18:39:29,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 18:39:29,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 18:39:29,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 18:39:29,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 18:39:29,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 18:39:29,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 18:39:29,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 18:39:29,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 18:39:29,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 18:39:29,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 18:39:29,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 18:39:29,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 18:39:29,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 18:39:29,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 18:39:29,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 18:39:29,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 18:39:29,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 18:39:29,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 18:39:29,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 18:39:29,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 18:39:29,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 18:39:29,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 18:39:29,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 18:39:29,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 18:39:29,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 18:39:29,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 18:39:29,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 18:39:29,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 18:39:29,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 18:39:29,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 18:39:29,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 18:39:29,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 18:39:29,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 18:39:29,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 18:39:29,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 18:39:29,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 18:39:29,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 18:39:29,263 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 18:39:29,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 18:39:29,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 18:39:29,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 18:39:29,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 18:39:29,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 18:39:29,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 18:39:29,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 18:39:29,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 18:39:29,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 18:39:29,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 18:39:29,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 18:39:29,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 18:39:29,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 18:39:29,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 18:39:29,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 18:39:29,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:39:29,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 18:39:29,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 18:39:29,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 18:39:29,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 18:39:29,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 18:39:29,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 18:39:29,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 18:39:29,271 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3f3a7b80cc81e6f6bd3fca48fa3fed45858e5d [2021-10-04 18:39:29,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 18:39:29,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 18:39:29,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 18:39:29,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 18:39:29,799 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 18:39:29,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/time-subst.wvr.c [2021-10-04 18:39:29,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b848233f5/d58f9ff6e8244389ac93b4cf12ecfa60/FLAGf242d5c70 [2021-10-04 18:39:30,535 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 18:39:30,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/time-subst.wvr.c [2021-10-04 18:39:30,536 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:39:30,536 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:39:30,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b848233f5/d58f9ff6e8244389ac93b4cf12ecfa60/FLAGf242d5c70 [2021-10-04 18:39:30,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b848233f5/d58f9ff6e8244389ac93b4cf12ecfa60 [2021-10-04 18:39:30,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 18:39:30,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 18:39:30,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 18:39:30,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 18:39:30,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 18:39:30,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:39:30" (1/1) ... [2021-10-04 18:39:30,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@baaee1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:30, skipping insertion in model container [2021-10-04 18:39:30,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:39:30" (1/1) ... [2021-10-04 18:39:30,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 18:39:30,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 18:39:31,102 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:39:31,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/time-subst.wvr.c[1790,1803] [2021-10-04 18:39:31,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:39:31,173 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 18:39:31,186 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:39:31,200 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/time-subst.wvr.c[1790,1803] [2021-10-04 18:39:31,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:39:31,219 INFO L208 MainTranslator]: Completed translation [2021-10-04 18:39:31,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31 WrapperNode [2021-10-04 18:39:31,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 18:39:31,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 18:39:31,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 18:39:31,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 18:39:31,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 18:39:31,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 18:39:31,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 18:39:31,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 18:39:31,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 18:39:31,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 18:39:31,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 18:39:31,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 18:39:31,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (1/1) ... [2021-10-04 18:39:31,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:39:31,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 18:39:31,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-04 18:39:31,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-04 18:39:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 18:39:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 18:39:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 18:39:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 18:39:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-04 18:39:31,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-04 18:39:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 18:39:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 18:39:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-04 18:39:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-04 18:39:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 18:39:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 18:39:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 18:39:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 18:39:31,423 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 18:39:31,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 18:39:31,995 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-04 18:39:31,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:39:31 BoogieIcfgContainer [2021-10-04 18:39:31,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 18:39:32,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 18:39:32,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 18:39:32,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 18:39:32,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 06:39:30" (1/3) ... [2021-10-04 18:39:32,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f35fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:39:32, skipping insertion in model container [2021-10-04 18:39:32,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:31" (2/3) ... [2021-10-04 18:39:32,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f35fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:39:32, skipping insertion in model container [2021-10-04 18:39:32,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:39:31" (3/3) ... [2021-10-04 18:39:32,008 INFO L111 eAbstractionObserver]: Analyzing ICFG time-subst.wvr.c [2021-10-04 18:39:32,014 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 18:39:32,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 18:39:32,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 18:39:32,015 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 18:39:32,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,048 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,048 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,049 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,049 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,061 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,062 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,062 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,070 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,070 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,070 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:32,092 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-04 18:39:32,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 18:39:32,199 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 [2021-10-04 18:39:32,199 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-04 18:39:32,233 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 18:39:32,249 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 94 transitions, 212 flow [2021-10-04 18:39:32,254 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 94 transitions, 212 flow [2021-10-04 18:39:32,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 94 transitions, 212 flow [2021-10-04 18:39:32,381 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2021-10-04 18:39:32,381 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-04 18:39:32,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 1/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-10-04 18:39:32,390 INFO L116 LiptonReduction]: Number of co-enabled transitions 168 [2021-10-04 18:39:36,796 INFO L131 LiptonReduction]: Checked pairs total: 347 [2021-10-04 18:39:36,796 INFO L133 LiptonReduction]: Total number of compositions: 77 [2021-10-04 18:39:36,806 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-04 18:39:36,819 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-04 18:39:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-04 18:39:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:36,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:36,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:36,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:36,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1585680321, now seen corresponding path program 1 times [2021-10-04 18:39:36,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:36,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890206066] [2021-10-04 18:39:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:36,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:38,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:38,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890206066] [2021-10-04 18:39:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890206066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:38,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:38,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:38,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744124043] [2021-10-04 18:39:38,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:38,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:38,454 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:38,839 INFO L93 Difference]: Finished difference Result 61 states and 96 transitions. [2021-10-04 18:39:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:39:38,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-04 18:39:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:38,851 INFO L225 Difference]: With dead ends: 61 [2021-10-04 18:39:38,852 INFO L226 Difference]: Without dead ends: 52 [2021-10-04 18:39:38,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 479.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-04 18:39:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-04 18:39:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 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) [2021-10-04 18:39:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 78 transitions. [2021-10-04 18:39:38,894 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 78 transitions. Word has length 16 [2021-10-04 18:39:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:38,895 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 78 transitions. [2021-10-04 18:39:38,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2021-10-04 18:39:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:38,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:38,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:38,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 18:39:38,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:38,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2119652075, now seen corresponding path program 2 times [2021-10-04 18:39:38,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:38,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716319775] [2021-10-04 18:39:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:38,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:39,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:39,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716319775] [2021-10-04 18:39:39,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716319775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:39,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:39,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:39,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720313824] [2021-10-04 18:39:39,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:39,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:39,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:39,334 INFO L87 Difference]: Start difference. First operand 44 states and 78 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:39,476 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2021-10-04 18:39:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:39:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-04 18:39:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:39,478 INFO L225 Difference]: With dead ends: 67 [2021-10-04 18:39:39,478 INFO L226 Difference]: Without dead ends: 48 [2021-10-04 18:39:39,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 165.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-04 18:39:39,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2021-10-04 18:39:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 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) [2021-10-04 18:39:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 67 transitions. [2021-10-04 18:39:39,487 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 67 transitions. Word has length 16 [2021-10-04 18:39:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:39,487 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 67 transitions. [2021-10-04 18:39:39,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2021-10-04 18:39:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:39,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:39,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:39,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 18:39:39,490 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash 464991941, now seen corresponding path program 3 times [2021-10-04 18:39:39,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:39,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025171938] [2021-10-04 18:39:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:39,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:40,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:40,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025171938] [2021-10-04 18:39:40,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025171938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:40,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:40,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:40,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060345379] [2021-10-04 18:39:40,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:40,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:40,397 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:40,680 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2021-10-04 18:39:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:39:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-04 18:39:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:40,682 INFO L225 Difference]: With dead ends: 55 [2021-10-04 18:39:40,682 INFO L226 Difference]: Without dead ends: 46 [2021-10-04 18:39:40,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 444.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-04 18:39:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2021-10-04 18:39:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 37 states have internal predecessors, (62), 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) [2021-10-04 18:39:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2021-10-04 18:39:40,689 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 16 [2021-10-04 18:39:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:40,689 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-10-04 18:39:40,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2021-10-04 18:39:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:40,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:40,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:40,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-04 18:39:40,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:40,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:40,693 INFO L82 PathProgramCache]: Analyzing trace with hash -500918869, now seen corresponding path program 4 times [2021-10-04 18:39:40,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:40,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389206921] [2021-10-04 18:39:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:40,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:41,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:41,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389206921] [2021-10-04 18:39:41,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389206921] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:41,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:41,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:41,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975457732] [2021-10-04 18:39:41,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:41,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:41,170 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:41,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:41,375 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2021-10-04 18:39:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:39:41,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-04 18:39:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:41,377 INFO L225 Difference]: With dead ends: 49 [2021-10-04 18:39:41,377 INFO L226 Difference]: Without dead ends: 36 [2021-10-04 18:39:41,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:41,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-04 18:39:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-04 18:39:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:39:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-04 18:39:41,383 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-04 18:39:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:41,383 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-04 18:39:41,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-04 18:39:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:41,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:41,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:41,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-04 18:39:41,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1364762037, now seen corresponding path program 5 times [2021-10-04 18:39:41,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:41,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106581437] [2021-10-04 18:39:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:41,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:42,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:42,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106581437] [2021-10-04 18:39:42,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106581437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:42,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:42,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:42,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009190131] [2021-10-04 18:39:42,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:42,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:42,077 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:42,294 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2021-10-04 18:39:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:39:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-04 18:39:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:42,296 INFO L225 Difference]: With dead ends: 43 [2021-10-04 18:39:42,296 INFO L226 Difference]: Without dead ends: 28 [2021-10-04 18:39:42,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 335.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-04 18:39:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-04 18:39:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 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) [2021-10-04 18:39:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-10-04 18:39:42,300 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 16 [2021-10-04 18:39:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:42,300 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-10-04 18:39:42,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-10-04 18:39:42,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:42,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:42,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:42,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-04 18:39:42,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash -395581713, now seen corresponding path program 6 times [2021-10-04 18:39:42,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:42,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435599707] [2021-10-04 18:39:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:42,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:42,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:42,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435599707] [2021-10-04 18:39:42,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435599707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:42,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:42,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:42,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213285874] [2021-10-04 18:39:42,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:42,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:42,936 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:43,105 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-10-04 18:39:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:39:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-10-04 18:39:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:43,106 INFO L225 Difference]: With dead ends: 27 [2021-10-04 18:39:43,106 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 18:39:43,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 246.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 18:39:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 18:39:43,107 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) [2021-10-04 18:39:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 18:39:43,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-04 18:39:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:43,108 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 18:39:43,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-10-04 18:39:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 18:39:43,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 18:39:43,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 18:39:43,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 18:39:43,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 18:39:43,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-04 18:39:43,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-04 18:39:43,119 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 18:39:43,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 18:39:43,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 06:39:43 BasicIcfg [2021-10-04 18:39:43,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 18:39:43,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 18:39:43,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 18:39:43,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 18:39:43,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:39:31" (3/4) ... [2021-10-04 18:39:43,127 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 18:39:43,134 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 18:39:43,134 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 18:39:43,135 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-04 18:39:43,140 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-04 18:39:43,140 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-04 18:39:43,141 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:39:43,188 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 18:39:43,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 18:39:43,191 INFO L168 Benchmark]: Toolchain (without parser) took 12280.20 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 32.3 MB in the beginning and 98.7 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,192 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:39:43,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.18 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 35.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.45 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 33.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,194 INFO L168 Benchmark]: Boogie Preprocessor took 27.63 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 32.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,194 INFO L168 Benchmark]: RCFGBuilder took 701.57 ms. Allocated memory is still 56.6 MB. Free memory was 32.3 MB in the beginning and 31.5 MB in the end (delta: 821.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,195 INFO L168 Benchmark]: TraceAbstraction took 11122.02 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 31.0 MB in the beginning and 101.9 MB in the end (delta: -70.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,196 INFO L168 Benchmark]: Witness Printer took 66.32 ms. Allocated memory is still 146.8 MB. Free memory was 101.9 MB in the beginning and 98.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:43,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.18 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 35.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.45 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 33.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.63 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 32.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 701.57 ms. Allocated memory is still 56.6 MB. Free memory was 32.3 MB in the beginning and 31.5 MB in the end (delta: 821.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11122.02 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 31.0 MB in the beginning and 101.9 MB in the end (delta: -70.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.32 ms. Allocated memory is still 146.8 MB. Free memory was 101.9 MB in the beginning and 98.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4543.3ms, 103 PlacesBefore, 30 PlacesAfterwards, 94 TransitionsBefore, 20 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 347 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 347, positive: 347, positive conditional: 0, positive unconditional: 347, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 131, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 131, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 347, positive: 216, positive conditional: 0, positive unconditional: 216, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 131, unknown conditional: 0, unknown unconditional: 131] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 65]: 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: 10935.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 15.0ms, AutomataDifference: 1454.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4619.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 154 SDtfs, 152 SDslu, 251 SDs, 0 SdLazy, 99 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 164.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1913.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.5ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 375.8ms SatisfiabilityAnalysisTime, 4189.2ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-04 18:39:43,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...