./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer --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-a4ecdab [2020-11-29 18:28:30,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:28:30,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:28:30,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:28:30,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:28:30,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:28:30,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:28:30,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:28:30,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:28:30,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:28:30,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:28:30,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:28:30,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:28:30,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:28:30,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:28:30,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:28:30,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:28:30,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:28:30,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:28:30,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:28:30,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:28:30,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:28:30,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:28:30,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:28:30,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:28:30,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:28:30,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:28:30,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:28:30,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:28:30,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:28:30,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:28:30,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:28:30,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:28:30,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:28:30,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:28:30,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:28:30,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:28:30,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:28:30,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:28:30,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:28:30,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:28:30,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:28:30,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:28:30,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:28:30,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:28:30,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:28:30,520 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:28:30,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:28:30,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:28:30,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:28:30,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:28:30,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:28:30,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:28:30,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:28:30,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:28:30,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:28:30,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:28:30,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:28:30,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:28:30,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:28:30,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:28:30,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:28:30,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:28:30,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:28:30,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:28:30,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:28:30,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:28:30,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:28:30,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:28:30,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:28:30,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:28:30,527 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-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ed3fc81a6baa40baeec77c0043080ce5c04efa [2020-11-29 18:28:30,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:28:30,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:28:30,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:28:30,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:28:30,831 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:28:30,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2020-11-29 18:28:30,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/data/962a8624d/3730fa6a2d3e41f19cadd47a75d5593c/FLAG3c4351f9f [2020-11-29 18:28:31,479 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:28:31,480 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/sv-benchmarks/c/pthread-atomic/szymanski.i [2020-11-29 18:28:31,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/data/962a8624d/3730fa6a2d3e41f19cadd47a75d5593c/FLAG3c4351f9f [2020-11-29 18:28:31,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/data/962a8624d/3730fa6a2d3e41f19cadd47a75d5593c [2020-11-29 18:28:31,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:28:31,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:28:31,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:28:31,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:28:31,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:28:31,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:28:31" (1/1) ... [2020-11-29 18:28:31,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7bbddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:31, skipping insertion in model container [2020-11-29 18:28:31,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:28:31" (1/1) ... [2020-11-29 18:28:31,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:28:31,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:28:32,052 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-29 18:28:32,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:28:32,241 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:28:32,275 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-29 18:28:32,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:28:32,432 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:28:32,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32 WrapperNode [2020-11-29 18:28:32,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:28:32,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:28:32,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:28:32,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:28:32,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:28:32,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:28:32,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:28:32,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:28:32,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2020-11-29 18:28:32,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:28:32,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:28:32,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:28:32,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:28:32,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:28:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:28:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-29 18:28:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-29 18:28:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-29 18:28:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-29 18:28:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:28:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 18:28:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:28:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:28:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:28:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 18:28:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:28:32,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:28:32,655 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 18:28:33,137 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:28:33,137 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 18:28:33,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:33 BoogieIcfgContainer [2020-11-29 18:28:33,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:28:33,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:28:33,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:28:33,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:28:33,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:28:31" (1/3) ... [2020-11-29 18:28:33,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373c8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:28:33, skipping insertion in model container [2020-11-29 18:28:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (2/3) ... [2020-11-29 18:28:33,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373c8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:28:33, skipping insertion in model container [2020-11-29 18:28:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:33" (3/3) ... [2020-11-29 18:28:33,147 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2020-11-29 18:28:33,156 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 18:28:33,156 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:28:33,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 18:28:33,160 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 18:28:33,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:28:33,229 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-29 18:28:33,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 18:28:33,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:28:33,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:28:33,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:28:33,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:28:33,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:28:33,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:28:33,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:28:33,281 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:28:33,300 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 18:28:33,302 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 117 transitions, 256 flow [2020-11-29 18:28:33,306 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 117 transitions, 256 flow [2020-11-29 18:28:33,308 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 100 places, 117 transitions, 256 flow [2020-11-29 18:28:33,378 INFO L129 PetriNetUnfolder]: 23/117 cut-off events. [2020-11-29 18:28:33,379 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-29 18:28:33,391 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 117 events. 23/117 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 91. Up to 3 conditions per place. [2020-11-29 18:28:33,401 INFO L116 LiptonReduction]: Number of co-enabled transitions 4240 [2020-11-29 18:28:35,275 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-29 18:28:35,663 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-29 18:28:35,799 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 18:28:35,818 INFO L131 LiptonReduction]: Checked pairs total: 10725 [2020-11-29 18:28:35,818 INFO L133 LiptonReduction]: Total number of compositions: 91 [2020-11-29 18:28:35,824 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 54 transitions, 130 flow [2020-11-29 18:28:35,882 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 540 states. [2020-11-29 18:28:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2020-11-29 18:28:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:28:35,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:28:35,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:28:35,893 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:28:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:28:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1850362529, now seen corresponding path program 1 times [2020-11-29 18:28:35,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:28:35,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708930419] [2020-11-29 18:28:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:28:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:28:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:36,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708930419] [2020-11-29 18:28:36,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:28:36,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:28:36,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121455950] [2020-11-29 18:28:36,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:28:36,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:28:36,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:28:36,103 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 3 states. [2020-11-29 18:28:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:28:36,180 INFO L93 Difference]: Finished difference Result 588 states and 1620 transitions. [2020-11-29 18:28:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:28:36,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 18:28:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:28:36,206 INFO L225 Difference]: With dead ends: 588 [2020-11-29 18:28:36,206 INFO L226 Difference]: Without dead ends: 420 [2020-11-29 18:28:36,208 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 [2020-11-29 18:28:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-11-29 18:28:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 402. [2020-11-29 18:28:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-11-29 18:28:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1144 transitions. [2020-11-29 18:28:36,318 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1144 transitions. Word has length 10 [2020-11-29 18:28:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:28:36,319 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 1144 transitions. [2020-11-29 18:28:36,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:28:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1144 transitions. [2020-11-29 18:28:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:28:36,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:28:36,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:28:36,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:28:36,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:28:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:28:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1505442362, now seen corresponding path program 1 times [2020-11-29 18:28:36,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:28:36,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21963414] [2020-11-29 18:28:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:28:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:28:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:36,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21963414] [2020-11-29 18:28:36,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:28:36,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:28:36,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099973304] [2020-11-29 18:28:36,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:28:36,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:36,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:28:36,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:28:36,439 INFO L87 Difference]: Start difference. First operand 402 states and 1144 transitions. Second operand 3 states. [2020-11-29 18:28:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:28:36,469 INFO L93 Difference]: Finished difference Result 389 states and 1093 transitions. [2020-11-29 18:28:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:28:36,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 18:28:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:28:36,473 INFO L225 Difference]: With dead ends: 389 [2020-11-29 18:28:36,473 INFO L226 Difference]: Without dead ends: 284 [2020-11-29 18:28:36,474 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 [2020-11-29 18:28:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-11-29 18:28:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2020-11-29 18:28:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-11-29 18:28:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 801 transitions. [2020-11-29 18:28:36,488 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 801 transitions. Word has length 12 [2020-11-29 18:28:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:28:36,489 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 801 transitions. [2020-11-29 18:28:36,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:28:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 801 transitions. [2020-11-29 18:28:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:28:36,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:28:36,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:28:36,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:28:36,492 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:28:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:28:36,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1965362268, now seen corresponding path program 1 times [2020-11-29 18:28:36,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:28:36,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45500637] [2020-11-29 18:28:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:28:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:28:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:36,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45500637] [2020-11-29 18:28:36,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:28:36,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:28:36,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249754201] [2020-11-29 18:28:36,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:28:36,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:28:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:28:36,576 INFO L87 Difference]: Start difference. First operand 284 states and 801 transitions. Second operand 4 states. [2020-11-29 18:28:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:28:36,705 INFO L93 Difference]: Finished difference Result 332 states and 922 transitions. [2020-11-29 18:28:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:28:36,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 18:28:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:28:36,709 INFO L225 Difference]: With dead ends: 332 [2020-11-29 18:28:36,709 INFO L226 Difference]: Without dead ends: 254 [2020-11-29 18:28:36,709 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 [2020-11-29 18:28:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-29 18:28:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2020-11-29 18:28:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-11-29 18:28:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 621 transitions. [2020-11-29 18:28:36,718 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 621 transitions. Word has length 19 [2020-11-29 18:28:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:28:36,719 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 621 transitions. [2020-11-29 18:28:36,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:28:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 621 transitions. [2020-11-29 18:28:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:28:36,730 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:28:36,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:28:36,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:28:36,731 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:28:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:28:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash -569850504, now seen corresponding path program 2 times [2020-11-29 18:28:36,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:28:36,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856938089] [2020-11-29 18:28:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:28:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:28:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:36,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856938089] [2020-11-29 18:28:36,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:28:36,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:28:36,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146916153] [2020-11-29 18:28:36,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:28:36,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:36,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:28:36,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:28:36,810 INFO L87 Difference]: Start difference. First operand 236 states and 621 transitions. Second operand 4 states. [2020-11-29 18:28:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:28:36,922 INFO L93 Difference]: Finished difference Result 300 states and 790 transitions. [2020-11-29 18:28:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:28:36,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 18:28:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:28:36,925 INFO L225 Difference]: With dead ends: 300 [2020-11-29 18:28:36,925 INFO L226 Difference]: Without dead ends: 268 [2020-11-29 18:28:36,925 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 [2020-11-29 18:28:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-11-29 18:28:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 244. [2020-11-29 18:28:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-11-29 18:28:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 633 transitions. [2020-11-29 18:28:36,947 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 633 transitions. Word has length 19 [2020-11-29 18:28:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:28:36,947 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 633 transitions. [2020-11-29 18:28:36,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:28:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 633 transitions. [2020-11-29 18:28:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:28:36,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:28:36,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:28:36,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:28:36,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:28:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:28:36,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1907556842, now seen corresponding path program 1 times [2020-11-29 18:28:36,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:28:36,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466241011] [2020-11-29 18:28:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:28:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:28:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:37,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466241011] [2020-11-29 18:28:37,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:28:37,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:28:37,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552840715] [2020-11-29 18:28:37,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:28:37,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:37,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:28:37,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:28:37,017 INFO L87 Difference]: Start difference. First operand 244 states and 633 transitions. Second operand 4 states. [2020-11-29 18:28:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:28:37,131 INFO L93 Difference]: Finished difference Result 360 states and 905 transitions. [2020-11-29 18:28:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:28:37,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 18:28:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:28:37,135 INFO L225 Difference]: With dead ends: 360 [2020-11-29 18:28:37,135 INFO L226 Difference]: Without dead ends: 360 [2020-11-29 18:28:37,135 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 [2020-11-29 18:28:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-11-29 18:28:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 292. [2020-11-29 18:28:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-11-29 18:28:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 765 transitions. [2020-11-29 18:28:37,156 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 765 transitions. Word has length 19 [2020-11-29 18:28:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:28:37,156 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 765 transitions. [2020-11-29 18:28:37,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:28:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 765 transitions. [2020-11-29 18:28:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:28:37,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:28:37,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:28:37,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:28:37,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:28:37,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:28:37,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1687523182, now seen corresponding path program 2 times [2020-11-29 18:28:37,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:28:37,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595654522] [2020-11-29 18:28:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:28:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:28:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:37,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595654522] [2020-11-29 18:28:37,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:28:37,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:28:37,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445823445] [2020-11-29 18:28:37,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:28:37,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:37,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:28:37,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:28:37,220 INFO L87 Difference]: Start difference. First operand 292 states and 765 transitions. Second operand 4 states. [2020-11-29 18:28:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:28:37,283 INFO L93 Difference]: Finished difference Result 246 states and 662 transitions. [2020-11-29 18:28:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:28:37,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 18:28:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:28:37,284 INFO L225 Difference]: With dead ends: 246 [2020-11-29 18:28:37,284 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:28:37,284 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 [2020-11-29 18:28:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:28:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:28:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:28:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:28:37,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 18:28:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:28:37,285 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:28:37,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:28:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:28:37,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:28:37,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:28:37,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:28:37 BasicIcfg [2020-11-29 18:28:37,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:28:37,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:28:37,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:28:37,289 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:28:37,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:33" (3/4) ... [2020-11-29 18:28:37,292 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:28:37,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-11-29 18:28:37,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-29 18:28:37,302 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 18:28:37,302 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:28:37,302 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:28:37,302 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:28:37,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9a2ff818-74e6-41aa-ac73-eb9adb0f4f75/bin/uautomizer/witness.graphml [2020-11-29 18:28:37,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:28:37,338 INFO L168 Benchmark]: Toolchain (without parser) took 5571.62 ms. Allocated memory was 90.2 MB in the beginning and 153.1 MB in the end (delta: 62.9 MB). Free memory was 59.4 MB in the beginning and 87.6 MB in the end (delta: -28.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:28:37,338 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 49.6 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:28:37,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.34 ms. Allocated memory is still 90.2 MB. Free memory was 59.2 MB in the beginning and 48.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:28:37,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.97 ms. Allocated memory is still 90.2 MB. Free memory was 47.6 MB in the beginning and 45.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:28:37,340 INFO L168 Benchmark]: Boogie Preprocessor took 62.06 ms. Allocated memory is still 90.2 MB. Free memory was 45.9 MB in the beginning and 44.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:28:37,341 INFO L168 Benchmark]: RCFGBuilder took 567.40 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 44.2 MB in the beginning and 83.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:28:37,342 INFO L168 Benchmark]: TraceAbstraction took 4147.83 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 83.9 MB in the beginning and 89.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:28:37,342 INFO L168 Benchmark]: Witness Printer took 47.10 ms. Allocated memory is still 153.1 MB. Free memory was 89.7 MB in the beginning and 87.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:28:37,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 49.6 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 667.34 ms. Allocated memory is still 90.2 MB. Free memory was 59.2 MB in the beginning and 48.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.97 ms. Allocated memory is still 90.2 MB. Free memory was 47.6 MB in the beginning and 45.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.06 ms. Allocated memory is still 90.2 MB. Free memory was 45.9 MB in the beginning and 44.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 567.40 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 44.2 MB in the beginning and 83.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4147.83 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 83.9 MB in the beginning and 89.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * Witness Printer took 47.10 ms. Allocated memory is still 153.1 MB. Free memory was 89.7 MB in the beginning and 87.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2720 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 51 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 293 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 100 PlacesBefore, 47 PlacesAfterwards, 117 TransitionsBefore, 54 TransitionsAfterwards, 4240 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 10 ChoiceCompositions, 91 TotalNumberOfCompositions, 10725 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 94 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 352 SDtfs, 241 SDslu, 275 SDs, 0 SdLazy, 189 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=540occurred 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, 128 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s 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...