./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC --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 d7ed3fc81a6baa40baeec77c0043080ce5c04efa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:23:49,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:49,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:49,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:49,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:49,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:49,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:49,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:49,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:49,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:49,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:49,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:49,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:49,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:49,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:49,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:49,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:49,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:49,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:49,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:49,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:49,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:49,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:49,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:49,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:49,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:49,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:49,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:49,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:49,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:49,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:49,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:49,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:49,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:49,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:49,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:49,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:49,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:49,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:49,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:49,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:49,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:23:49,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:49,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:49,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:49,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:49,219 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:49,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:49,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:23:49,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:23:49,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:23:49,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:49,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:23:49,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:23:49,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:23:49,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:23:49,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:49,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:49,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:23:49,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:49,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:49,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:23:49,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:49,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:49,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:23:49,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:23:49,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:23:49,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:23:49,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:23:49,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:49,233 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ed3fc81a6baa40baeec77c0043080ce5c04efa [2021-10-11 00:23:49,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:49,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:49,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:49,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:49,577 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:49,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2021-10-11 00:23:49,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/data/95361ef59/8a42ba93a3d64e699b4e457bdcdb7f55/FLAG9c7ca8cfe [2021-10-11 00:23:50,247 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:50,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/sv-benchmarks/c/pthread-atomic/szymanski.i [2021-10-11 00:23:50,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/data/95361ef59/8a42ba93a3d64e699b4e457bdcdb7f55/FLAG9c7ca8cfe [2021-10-11 00:23:50,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/data/95361ef59/8a42ba93a3d64e699b4e457bdcdb7f55 [2021-10-11 00:23:50,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:50,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:50,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:50,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:50,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:50,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6369d389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50, skipping insertion in model container [2021-10-11 00:23:50,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:50,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:50,843 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-11 00:23:51,079 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-10-11 00:23:51,096 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-10-11 00:23:51,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:51,131 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:51,163 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-11 00:23:51,198 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-10-11 00:23:51,215 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-10-11 00:23:51,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:51,301 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:51,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51 WrapperNode [2021-10-11 00:23:51,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:51,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:51,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:51,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:51,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:51,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:51,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:51,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:51,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... [2021-10-11 00:23:51,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:51,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:51,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:51,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:51,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:23:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-10-11 00:23:51,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-10-11 00:23:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-11 00:23:51,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-11 00:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 00:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 00:23:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:51,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:51,521 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 00:23:51,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:51,967 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 00:23:51,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:51 BoogieIcfgContainer [2021-10-11 00:23:51,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:51,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:23:51,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:23:51,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:23:51,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:50" (1/3) ... [2021-10-11 00:23:51,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d136f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:51, skipping insertion in model container [2021-10-11 00:23:51,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:51" (2/3) ... [2021-10-11 00:23:51,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d136f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:51, skipping insertion in model container [2021-10-11 00:23:51,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:51" (3/3) ... [2021-10-11 00:23:51,991 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-10-11 00:23:52,009 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 00:23:52,009 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:23:52,012 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:23:52,014 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 00:23:52,058 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,058 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,058 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,060 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,135 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:23:52,143 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-11 00:23:52,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 00:23:52,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:23:52,189 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:23:52,190 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:23:52,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:52,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:52,190 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:23:52,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:52,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:23:52,205 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 00:23:52,208 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 109 transitions, 240 flow [2021-10-11 00:23:52,211 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 109 transitions, 240 flow [2021-10-11 00:23:52,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 109 transitions, 240 flow [2021-10-11 00:23:52,272 INFO L129 PetriNetUnfolder]: 21/109 cut-off events. [2021-10-11 00:23:52,272 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-11 00:23:52,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 109 events. 21/109 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-10-11 00:23:52,286 INFO L116 LiptonReduction]: Number of co-enabled transitions 3528 [2021-10-11 00:23:54,941 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-10-11 00:23:55,044 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 00:23:55,249 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-10-11 00:23:55,353 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 00:23:55,368 INFO L131 LiptonReduction]: Checked pairs total: 9414 [2021-10-11 00:23:55,368 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-11 00:23:55,375 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 53 transitions, 128 flow [2021-10-11 00:23:55,421 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 575 states. [2021-10-11 00:23:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2021-10-11 00:23:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:23:55,432 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:55,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:55,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1395682617, now seen corresponding path program 1 times [2021-10-11 00:23:55,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:55,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699603229] [2021-10-11 00:23:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:55,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699603229] [2021-10-11 00:23:55,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:55,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:55,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319283931] [2021-10-11 00:23:55,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:55,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:55,686 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 3 states. [2021-10-11 00:23:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:55,786 INFO L93 Difference]: Finished difference Result 623 states and 1713 transitions. [2021-10-11 00:23:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:55,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 00:23:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:55,807 INFO L225 Difference]: With dead ends: 623 [2021-10-11 00:23:55,807 INFO L226 Difference]: Without dead ends: 446 [2021-10-11 00:23:55,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-11 00:23:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 428. [2021-10-11 00:23:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2021-10-11 00:23:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1214 transitions. [2021-10-11 00:23:55,915 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1214 transitions. Word has length 10 [2021-10-11 00:23:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:55,916 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 1214 transitions. [2021-10-11 00:23:55,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1214 transitions. [2021-10-11 00:23:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:23:55,919 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:55,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:55,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:23:55,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:55,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1830914178, now seen corresponding path program 1 times [2021-10-11 00:23:55,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:55,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581909674] [2021-10-11 00:23:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:56,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581909674] [2021-10-11 00:23:56,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:56,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:56,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869552560] [2021-10-11 00:23:56,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:56,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:56,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:56,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:56,007 INFO L87 Difference]: Start difference. First operand 428 states and 1214 transitions. Second operand 3 states. [2021-10-11 00:23:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:56,039 INFO L93 Difference]: Finished difference Result 413 states and 1158 transitions. [2021-10-11 00:23:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:56,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-10-11 00:23:56,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:56,046 INFO L225 Difference]: With dead ends: 413 [2021-10-11 00:23:56,046 INFO L226 Difference]: Without dead ends: 308 [2021-10-11 00:23:56,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:56,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-11 00:23:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-10-11 00:23:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-10-11 00:23:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 866 transitions. [2021-10-11 00:23:56,071 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 866 transitions. Word has length 12 [2021-10-11 00:23:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:56,071 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 866 transitions. [2021-10-11 00:23:56,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 866 transitions. [2021-10-11 00:23:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:23:56,075 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:56,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:56,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:23:56,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1877941582, now seen corresponding path program 1 times [2021-10-11 00:23:56,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:56,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375727454] [2021-10-11 00:23:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:56,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375727454] [2021-10-11 00:23:56,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:56,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:23:56,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715482501] [2021-10-11 00:23:56,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:56,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:56,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:56,143 INFO L87 Difference]: Start difference. First operand 308 states and 866 transitions. Second operand 3 states. [2021-10-11 00:23:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:56,181 INFO L93 Difference]: Finished difference Result 308 states and 862 transitions. [2021-10-11 00:23:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:56,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 00:23:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:56,185 INFO L225 Difference]: With dead ends: 308 [2021-10-11 00:23:56,185 INFO L226 Difference]: Without dead ends: 308 [2021-10-11 00:23:56,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-11 00:23:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-10-11 00:23:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-10-11 00:23:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 862 transitions. [2021-10-11 00:23:56,206 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 862 transitions. Word has length 19 [2021-10-11 00:23:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:56,206 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 862 transitions. [2021-10-11 00:23:56,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 862 transitions. [2021-10-11 00:23:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:23:56,209 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:56,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:56,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:23:56,210 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:56,211 INFO L82 PathProgramCache]: Analyzing trace with hash -604449698, now seen corresponding path program 1 times [2021-10-11 00:23:56,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:56,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52051480] [2021-10-11 00:23:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:56,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52051480] [2021-10-11 00:23:56,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:56,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:56,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205952151] [2021-10-11 00:23:56,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:56,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:56,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:56,271 INFO L87 Difference]: Start difference. First operand 308 states and 862 transitions. Second operand 4 states. [2021-10-11 00:23:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:56,377 INFO L93 Difference]: Finished difference Result 392 states and 1094 transitions. [2021-10-11 00:23:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:23:56,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:23:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:56,380 INFO L225 Difference]: With dead ends: 392 [2021-10-11 00:23:56,381 INFO L226 Difference]: Without dead ends: 274 [2021-10-11 00:23:56,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-11 00:23:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 244. [2021-10-11 00:23:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-10-11 00:23:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 634 transitions. [2021-10-11 00:23:56,396 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 634 transitions. Word has length 19 [2021-10-11 00:23:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:56,396 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 634 transitions. [2021-10-11 00:23:56,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 634 transitions. [2021-10-11 00:23:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:23:56,397 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:56,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:56,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:23:56,398 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:56,399 INFO L82 PathProgramCache]: Analyzing trace with hash -394659122, now seen corresponding path program 2 times [2021-10-11 00:23:56,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:56,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296425790] [2021-10-11 00:23:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:56,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296425790] [2021-10-11 00:23:56,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:56,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:23:56,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856089558] [2021-10-11 00:23:56,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:56,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:56,455 INFO L87 Difference]: Start difference. First operand 244 states and 634 transitions. Second operand 3 states. [2021-10-11 00:23:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:56,503 INFO L93 Difference]: Finished difference Result 274 states and 713 transitions. [2021-10-11 00:23:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:56,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 00:23:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:56,506 INFO L225 Difference]: With dead ends: 274 [2021-10-11 00:23:56,507 INFO L226 Difference]: Without dead ends: 274 [2021-10-11 00:23:56,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-11 00:23:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 244. [2021-10-11 00:23:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-10-11 00:23:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 630 transitions. [2021-10-11 00:23:56,520 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 630 transitions. Word has length 19 [2021-10-11 00:23:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:56,521 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 630 transitions. [2021-10-11 00:23:56,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 630 transitions. [2021-10-11 00:23:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:23:56,523 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:56,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:56,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:23:56,523 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:56,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1200101758, now seen corresponding path program 3 times [2021-10-11 00:23:56,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:56,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556411545] [2021-10-11 00:23:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:56,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556411545] [2021-10-11 00:23:56,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:56,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317321808] [2021-10-11 00:23:56,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:56,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:56,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:56,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:56,622 INFO L87 Difference]: Start difference. First operand 244 states and 630 transitions. Second operand 4 states. [2021-10-11 00:23:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:56,671 INFO L93 Difference]: Finished difference Result 214 states and 573 transitions. [2021-10-11 00:23:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:56,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:23:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:56,672 INFO L225 Difference]: With dead ends: 214 [2021-10-11 00:23:56,672 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:23:56,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:23:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:23:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:23:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:23:56,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-11 00:23:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:56,673 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:23:56,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:23:56,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:23:56,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:23:56,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:56 BasicIcfg [2021-10-11 00:23:56,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:56,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:56,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:56,678 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:56,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:51" (3/4) ... [2021-10-11 00:23:56,682 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:23:56,688 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-10-11 00:23:56,688 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-10-11 00:23:56,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 00:23:56,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:23:56,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:23:56,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:23:56,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_956d7d56-f92b-4b10-a15e-23d5d783d923/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:23:56,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:56,738 INFO L168 Benchmark]: Toolchain (without parser) took 6200.05 ms. Allocated memory was 92.3 MB in the beginning and 199.2 MB in the end (delta: 107.0 MB). Free memory was 56.4 MB in the beginning and 173.3 MB in the end (delta: -116.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:56,739 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:56,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.65 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.2 MB in the beginning and 78.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:56,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.34 ms. Allocated memory is still 123.7 MB. Free memory was 78.6 MB in the beginning and 77.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:56,741 INFO L168 Benchmark]: Boogie Preprocessor took 37.63 ms. Allocated memory is still 123.7 MB. Free memory was 77.0 MB in the beginning and 75.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:56,741 INFO L168 Benchmark]: RCFGBuilder took 580.95 ms. Allocated memory is still 123.7 MB. Free memory was 75.7 MB in the beginning and 50.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:56,742 INFO L168 Benchmark]: TraceAbstraction took 4705.00 ms. Allocated memory was 123.7 MB in the beginning and 165.7 MB in the end (delta: 41.9 MB). Free memory was 49.9 MB in the beginning and 50.5 MB in the end (delta: -628.7 kB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:56,743 INFO L168 Benchmark]: Witness Printer took 59.51 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 50.5 MB in the beginning and 173.3 MB in the end (delta: -122.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:56,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 762.65 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.2 MB in the beginning and 78.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.34 ms. Allocated memory is still 123.7 MB. Free memory was 78.6 MB in the beginning and 77.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.63 ms. Allocated memory is still 123.7 MB. Free memory was 77.0 MB in the beginning and 75.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 580.95 ms. Allocated memory is still 123.7 MB. Free memory was 75.7 MB in the beginning and 50.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4705.00 ms. Allocated memory was 123.7 MB in the beginning and 165.7 MB in the end (delta: 41.9 MB). Free memory was 49.9 MB in the beginning and 50.5 MB in the end (delta: -628.7 kB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.51 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 50.5 MB in the beginning and 173.3 MB in the end (delta: -122.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2114 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 51 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 361 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 94 PlacesBefore, 48 PlacesAfterwards, 109 TransitionsBefore, 53 TransitionsAfterwards, 3528 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 10 ChoiceCompositions, 72 TotalNumberOfCompositions, 9414 MoverChecksTotal - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 346 SDtfs, 170 SDslu, 213 SDs, 0 SdLazy, 136 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=575occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 78 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2222 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...