./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/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 a0fd1ce32e60332058e6b414d36029fafca9079a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:54:42,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:42,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:42,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:42,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:42,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:42,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:42,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:42,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:42,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:42,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:42,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:42,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:42,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:42,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:42,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:42,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:42,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:42,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:42,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:42,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:42,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:42,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:42,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:42,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:42,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:42,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:42,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:42,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:42,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:42,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:42,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:42,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:42,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:42,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:42,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:42,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:42,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:42,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:42,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:42,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:42,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:54:42,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:42,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:42,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:42,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:42,489 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:42,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:42,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:54:42,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:54:42,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:54:42,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:42,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:54:42,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:54:42,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:54:42,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:54:42,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:42,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:42,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:54:42,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:42,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:42,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:54:42,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:54:42,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:42,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:42,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:54:42,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:54:42,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:54:42,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:54:42,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:54:42,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:42,499 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_a64ddb36-d614-45bf-8063-a59f223aef34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0fd1ce32e60332058e6b414d36029fafca9079a [2020-12-01 14:54:42,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:42,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:42,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:42,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:42,787 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:42,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i [2020-12-01 14:54:42,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/data/825f47040/21879fe82dd0491cb06dcde8c338cb45/FLAGf9f076684 [2020-12-01 14:54:43,420 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:43,421 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i [2020-12-01 14:54:43,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/data/825f47040/21879fe82dd0491cb06dcde8c338cb45/FLAGf9f076684 [2020-12-01 14:54:43,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/data/825f47040/21879fe82dd0491cb06dcde8c338cb45 [2020-12-01 14:54:43,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:43,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:43,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:43,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:43,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:43,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:43" (1/1) ... [2020-12-01 14:54:43,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1772c91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:43, skipping insertion in model container [2020-12-01 14:54:43,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:43" (1/1) ... [2020-12-01 14:54:43,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:43,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:44,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:44,142 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:44,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:44,258 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:44,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44 WrapperNode [2020-12-01 14:54:44,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:44,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:44,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:44,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:44,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:44,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:44,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:44,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:44,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... [2020-12-01 14:54:44,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:44,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:44,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:44,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:44,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/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 [2020-12-01 14:54:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:54:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 14:54:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:54:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:54:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 14:54:44,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 14:54:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 14:54:44,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 14:54:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:54:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 14:54:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:44,431 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 14:54:44,863 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:44,863 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 14:54:44,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:44 BoogieIcfgContainer [2020-12-01 14:54:44,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:44,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:54:44,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:54:44,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:54:44,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:54:43" (1/3) ... [2020-12-01 14:54:44,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2594fbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:44, skipping insertion in model container [2020-12-01 14:54:44,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:44" (2/3) ... [2020-12-01 14:54:44,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2594fbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:44, skipping insertion in model container [2020-12-01 14:54:44,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:44" (3/3) ... [2020-12-01 14:54:44,882 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2020-12-01 14:54:44,903 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 14:54:44,903 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:54:44,906 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:54:44,907 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 14:54:44,929 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,930 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,930 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,930 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,930 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,931 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,931 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,932 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,932 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,937 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,937 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:44,944 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 14:54:44,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-01 14:54:44,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:54:44,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:54:44,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:54:44,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:44,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:44,977 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:54:44,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:44,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:54:44,988 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 14:54:44,990 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-12-01 14:54:44,993 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-12-01 14:54:44,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-12-01 14:54:45,032 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-12-01 14:54:45,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 14:54:45,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-12-01 14:54:45,038 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-12-01 14:54:47,721 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 14:54:47,988 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 14:54:48,101 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-12-01 14:54:48,101 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-01 14:54:48,107 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-01 14:54:48,119 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-01 14:54:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-01 14:54:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 14:54:48,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:48,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:54:48,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-12-01 14:54:48,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:48,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782373084] [2020-12-01 14:54:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:48,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782373084] [2020-12-01 14:54:48,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:48,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:48,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373714776] [2020-12-01 14:54:48,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:54:48,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:48,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:54:48,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:48,340 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-01 14:54:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:48,365 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-01 14:54:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:54:48,366 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-01 14:54:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:48,378 INFO L225 Difference]: With dead ends: 90 [2020-12-01 14:54:48,379 INFO L226 Difference]: Without dead ends: 74 [2020-12-01 14:54:48,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-01 14:54:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-01 14:54:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 14:54:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-01 14:54:48,435 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-01 14:54:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:48,436 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-01 14:54:48,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:54:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-01 14:54:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 14:54:48,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:48,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:48,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:54:48,442 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:48,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-12-01 14:54:48,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:48,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043925925] [2020-12-01 14:54:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:48,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043925925] [2020-12-01 14:54:48,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:48,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:48,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150640514] [2020-12-01 14:54:48,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:48,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:48,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:48,618 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-01 14:54:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:48,655 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-12-01 14:54:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:48,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 14:54:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:48,663 INFO L225 Difference]: With dead ends: 82 [2020-12-01 14:54:48,664 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 14:54:48,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 14:54:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-01 14:54:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 14:54:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-12-01 14:54:48,682 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-12-01 14:54:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:48,682 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-12-01 14:54:48,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-12-01 14:54:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 14:54:48,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:48,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:48,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:54:48,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-12-01 14:54:48,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:48,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709068201] [2020-12-01 14:54:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:48,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709068201] [2020-12-01 14:54:48,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:48,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:48,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076190749] [2020-12-01 14:54:48,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:48,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:48,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:48,787 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-12-01 14:54:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:48,851 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-12-01 14:54:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:54:48,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-01 14:54:48,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:48,855 INFO L225 Difference]: With dead ends: 78 [2020-12-01 14:54:48,855 INFO L226 Difference]: Without dead ends: 42 [2020-12-01 14:54:48,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 14:54:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-01 14:54:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-01 14:54:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-01 14:54:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-12-01 14:54:48,871 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-12-01 14:54:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:48,871 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-12-01 14:54:48,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-12-01 14:54:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 14:54:48,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:48,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:48,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:54:48,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:48,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-12-01 14:54:48,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:48,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071002793] [2020-12-01 14:54:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:48,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071002793] [2020-12-01 14:54:48,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:48,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:48,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85097834] [2020-12-01 14:54:48,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:48,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:48,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:48,979 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 4 states. [2020-12-01 14:54:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:49,007 INFO L93 Difference]: Finished difference Result 43 states and 68 transitions. [2020-12-01 14:54:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:49,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 14:54:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:49,009 INFO L225 Difference]: With dead ends: 43 [2020-12-01 14:54:49,009 INFO L226 Difference]: Without dead ends: 33 [2020-12-01 14:54:49,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-01 14:54:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-01 14:54:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 14:54:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-01 14:54:49,014 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 10 [2020-12-01 14:54:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:49,014 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-01 14:54:49,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-01 14:54:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 14:54:49,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:49,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:49,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 14:54:49,015 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash 215135871, now seen corresponding path program 1 times [2020-12-01 14:54:49,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:49,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230592442] [2020-12-01 14:54:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:49,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230592442] [2020-12-01 14:54:49,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:49,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:49,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999347212] [2020-12-01 14:54:49,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:49,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:49,080 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 5 states. [2020-12-01 14:54:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:49,107 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-12-01 14:54:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:54:49,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 14:54:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:49,109 INFO L225 Difference]: With dead ends: 28 [2020-12-01 14:54:49,109 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 14:54:49,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:54:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 14:54:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-01 14:54:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 14:54:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-01 14:54:49,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2020-12-01 14:54:49,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:49,112 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-01 14:54:49,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-01 14:54:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:54:49,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:49,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:49,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 14:54:49,114 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 536770965, now seen corresponding path program 1 times [2020-12-01 14:54:49,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:49,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632585762] [2020-12-01 14:54:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:49,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632585762] [2020-12-01 14:54:49,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:49,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:49,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035408901] [2020-12-01 14:54:49,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:49,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:49,168 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 5 states. [2020-12-01 14:54:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:49,194 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-12-01 14:54:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:49,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 14:54:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:49,195 INFO L225 Difference]: With dead ends: 22 [2020-12-01 14:54:49,195 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 14:54:49,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:54:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 14:54:49,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 14:54:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 14:54:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 14:54:49,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-01 14:54:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:49,197 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:49,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:54:49,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 14:54:49,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 14:54:49,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:54:49 BasicIcfg [2020-12-01 14:54:49,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:54:49,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:49,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:49,202 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:49,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:44" (3/4) ... [2020-12-01 14:54:49,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 14:54:49,211 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 14:54:49,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 14:54:49,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-01 14:54:49,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 14:54:49,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:49,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:49,264 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a64ddb36-d614-45bf-8063-a59f223aef34/bin/uautomizer/witness.graphml [2020-12-01 14:54:49,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:49,266 INFO L168 Benchmark]: Toolchain (without parser) took 5552.63 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 104.4 MB in the beginning and 103.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:49,266 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:49,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.84 ms. Allocated memory is still 132.1 MB. Free memory was 104.0 MB in the beginning and 88.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:49,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.45 ms. Allocated memory is still 132.1 MB. Free memory was 88.8 MB in the beginning and 87.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:49,268 INFO L168 Benchmark]: Boogie Preprocessor took 24.93 ms. Allocated memory is still 132.1 MB. Free memory was 87.1 MB in the beginning and 85.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:49,269 INFO L168 Benchmark]: RCFGBuilder took 536.27 ms. Allocated memory is still 132.1 MB. Free memory was 85.7 MB in the beginning and 106.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:49,269 INFO L168 Benchmark]: TraceAbstraction took 4333.82 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 105.4 MB in the beginning and 105.4 MB in the end (delta: -24.3 kB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:49,270 INFO L168 Benchmark]: Witness Printer took 63.24 ms. Allocated memory is still 195.0 MB. Free memory was 105.4 MB in the beginning and 103.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:49,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 543.84 ms. Allocated memory is still 132.1 MB. Free memory was 104.0 MB in the beginning and 88.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.45 ms. Allocated memory is still 132.1 MB. Free memory was 88.8 MB in the beginning and 87.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.93 ms. Allocated memory is still 132.1 MB. Free memory was 87.1 MB in the beginning and 85.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 536.27 ms. Allocated memory is still 132.1 MB. Free memory was 85.7 MB in the beginning and 106.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4333.82 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 105.4 MB in the beginning and 105.4 MB in the end (delta: -24.3 kB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. * Witness Printer took 63.24 ms. Allocated memory is still 195.0 MB. Free memory was 105.4 MB in the beginning and 103.3 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 546 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 87 SDtfs, 66 SDslu, 112 SDs, 0 SdLazy, 55 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1395 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...