./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.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_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/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 81a2da0952c22c94b17f5c8db8240b8acbaea581 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:58:11,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:11,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:11,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:11,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:11,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:11,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:11,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:11,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:11,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:11,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:11,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:11,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:11,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:11,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:11,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:11,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:11,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:11,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:11,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:11,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:11,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:11,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:11,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:11,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:11,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:11,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:11,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:11,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:11,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:11,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:11,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:11,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:11,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:11,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:11,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:11,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:11,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:11,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:11,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:11,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:11,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:58:11,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:11,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:11,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:11,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:11,883 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:11,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:11,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:11,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:11,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:11,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:11,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:11,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:11,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:11,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:11,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:11,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:11,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:11,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:11,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:11,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:11,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:11,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:11,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:11,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:11,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:11,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:11,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:58:11,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:11,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:11,891 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_2970f5ca-cc1c-4ea6-b7d6-067be5395882/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81a2da0952c22c94b17f5c8db8240b8acbaea581 [2020-11-29 23:58:12,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:12,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:12,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:12,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:12,270 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:12,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2020-11-29 23:58:12,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/data/be82d4d7d/975442e79a8d4d33ba06f4d94b80458c/FLAG7361a266d [2020-11-29 23:58:13,109 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:13,111 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2020-11-29 23:58:13,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/data/be82d4d7d/975442e79a8d4d33ba06f4d94b80458c/FLAG7361a266d [2020-11-29 23:58:13,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/data/be82d4d7d/975442e79a8d4d33ba06f4d94b80458c [2020-11-29 23:58:13,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:13,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:13,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:13,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:13,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:13,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:13" (1/1) ... [2020-11-29 23:58:13,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295e0864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:13, skipping insertion in model container [2020-11-29 23:58:13,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:13" (1/1) ... [2020-11-29 23:58:13,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:13,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:14,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:14,015 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:14,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:14,209 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:14,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14 WrapperNode [2020-11-29 23:58:14,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:14,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:14,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:14,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:14,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:14,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:14,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:14,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:14,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... [2020-11-29 23:58:14,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:14,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:14,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:14,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:14,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/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 23:58:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:58:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 23:58:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:58:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 23:58:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 23:58:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 23:58:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 23:58:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 23:58:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 23:58:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 23:58:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:14,451 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 23:58:15,078 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:15,078 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 23:58:15,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:15 BoogieIcfgContainer [2020-11-29 23:58:15,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:15,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:15,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:15,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:15,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:13" (1/3) ... [2020-11-29 23:58:15,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5977b043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:15, skipping insertion in model container [2020-11-29 23:58:15,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:14" (2/3) ... [2020-11-29 23:58:15,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5977b043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:15, skipping insertion in model container [2020-11-29 23:58:15,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:15" (3/3) ... [2020-11-29 23:58:15,094 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-11-29 23:58:15,108 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 23:58:15,108 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:15,114 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:58:15,115 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 23:58:15,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,162 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,162 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,170 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,170 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,176 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:15,198 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 23:58:15,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 23:58:15,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:15,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:15,257 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:15,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:15,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:15,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:15,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:15,259 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:15,277 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 23:58:15,281 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 23:58:15,285 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 23:58:15,287 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-29 23:58:15,368 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-29 23:58:15,369 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 23:58:15,374 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-29 23:58:15,380 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-29 23:58:17,682 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-29 23:58:18,108 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-29 23:58:18,259 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-29 23:58:18,426 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-29 23:58:18,546 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-29 23:58:18,551 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-11-29 23:58:18,555 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-29 23:58:18,561 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-29 23:58:18,606 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-29 23:58:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-29 23:58:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:58:18,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:18,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:18,622 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:18,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:18,630 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-11-29 23:58:18,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:18,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642488753] [2020-11-29 23:58:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:18,833 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 23:58:18,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642488753] [2020-11-29 23:58:18,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:18,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:18,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303281843] [2020-11-29 23:58:18,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:58:18,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:18,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:58:18,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:18,862 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-29 23:58:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:18,895 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-29 23:58:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:58:18,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 23:58:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:18,918 INFO L225 Difference]: With dead ends: 274 [2020-11-29 23:58:18,918 INFO L226 Difference]: Without dead ends: 226 [2020-11-29 23:58:18,919 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 [2020-11-29 23:58:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-29 23:58:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-29 23:58:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-29 23:58:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-29 23:58:18,995 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-29 23:58:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:18,996 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-29 23:58:18,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:58:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-29 23:58:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:58:18,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:18,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:18,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:58:19,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:19,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-11-29 23:58:19,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:19,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894083814] [2020-11-29 23:58:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:19,201 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 23:58:19,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894083814] [2020-11-29 23:58:19,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:19,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:19,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215183792] [2020-11-29 23:58:19,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:58:19,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:58:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:58:19,205 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-11-29 23:58:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:19,259 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-11-29 23:58:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:19,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 23:58:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:19,266 INFO L225 Difference]: With dead ends: 250 [2020-11-29 23:58:19,268 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 23:58:19,269 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 [2020-11-29 23:58:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 23:58:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-29 23:58:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 23:58:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-11-29 23:58:19,316 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-11-29 23:58:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:19,318 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-11-29 23:58:19,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:58:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-11-29 23:58:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:58:19,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:19,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:19,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:58:19,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:19,336 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-11-29 23:58:19,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:19,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490428201] [2020-11-29 23:58:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:19,488 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 23:58:19,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490428201] [2020-11-29 23:58:19,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:19,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:19,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887461622] [2020-11-29 23:58:19,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:19,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:19,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:19,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:19,491 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-11-29 23:58:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:19,596 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-11-29 23:58:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:19,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 23:58:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:19,599 INFO L225 Difference]: With dead ends: 238 [2020-11-29 23:58:19,601 INFO L226 Difference]: Without dead ends: 106 [2020-11-29 23:58:19,601 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 [2020-11-29 23:58:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-29 23:58:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-11-29 23:58:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 23:58:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-11-29 23:58:19,624 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-11-29 23:58:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:19,625 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-11-29 23:58:19,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-11-29 23:58:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:58:19,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:19,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:19,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:58:19,628 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-11-29 23:58:19,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:19,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507077555] [2020-11-29 23:58:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:19,755 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 23:58:19,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507077555] [2020-11-29 23:58:19,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:19,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:19,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872246774] [2020-11-29 23:58:19,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:19,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:19,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:19,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:19,758 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-11-29 23:58:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:19,850 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-11-29 23:58:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:19,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 23:58:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:19,853 INFO L225 Difference]: With dead ends: 148 [2020-11-29 23:58:19,853 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 23:58:19,853 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 [2020-11-29 23:58:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 23:58:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-29 23:58:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-29 23:58:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-11-29 23:58:19,859 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-11-29 23:58:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:19,859 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-11-29 23:58:19,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-11-29 23:58:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:58:19,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:19,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:19,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:58:19,861 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-11-29 23:58:19,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:19,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851687356] [2020-11-29 23:58:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:19,957 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 23:58:19,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851687356] [2020-11-29 23:58:19,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:19,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:19,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174057530] [2020-11-29 23:58:19,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:58:19,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:19,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:58:19,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:58:19,960 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-11-29 23:58:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:20,007 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-11-29 23:58:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:20,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 23:58:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:20,009 INFO L225 Difference]: With dead ends: 87 [2020-11-29 23:58:20,010 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 23:58:20,010 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 [2020-11-29 23:58:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 23:58:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-29 23:58:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 23:58:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-11-29 23:58:20,014 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-11-29 23:58:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:20,015 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-11-29 23:58:20,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:58:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-11-29 23:58:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:58:20,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:20,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:20,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:58:20,016 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-11-29 23:58:20,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:20,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853670408] [2020-11-29 23:58:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:20,109 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 23:58:20,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853670408] [2020-11-29 23:58:20,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:20,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:58:20,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130554251] [2020-11-29 23:58:20,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:20,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:20,114 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-11-29 23:58:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:20,172 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-11-29 23:58:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:20,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 23:58:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:20,174 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:58:20,174 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:58:20,175 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 [2020-11-29 23:58:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:58:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 23:58:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 23:58:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-11-29 23:58:20,178 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-11-29 23:58:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:20,178 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-11-29 23:58:20,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-11-29 23:58:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:58:20,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:20,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:20,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:58:20,180 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:20,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:20,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-11-29 23:58:20,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:20,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482052407] [2020-11-29 23:58:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:20,292 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 23:58:20,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482052407] [2020-11-29 23:58:20,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:20,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:58:20,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087112653] [2020-11-29 23:58:20,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:20,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:20,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:20,295 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-11-29 23:58:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:20,360 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-11-29 23:58:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:20,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 23:58:20,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:20,361 INFO L225 Difference]: With dead ends: 40 [2020-11-29 23:58:20,361 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 23:58:20,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:58:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 23:58:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 23:58:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 23:58:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-11-29 23:58:20,364 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-11-29 23:58:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:20,364 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-11-29 23:58:20,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-11-29 23:58:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:58:20,365 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:20,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:20,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:58:20,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:20,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-11-29 23:58:20,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:20,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866381212] [2020-11-29 23:58:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:20,562 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 23:58:20,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866381212] [2020-11-29 23:58:20,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:20,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 23:58:20,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330078438] [2020-11-29 23:58:20,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:58:20,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:58:20,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:58:20,564 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-11-29 23:58:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:20,810 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-11-29 23:58:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:58:20,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 23:58:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:20,811 INFO L225 Difference]: With dead ends: 46 [2020-11-29 23:58:20,811 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:58:20,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:58:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:58:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 23:58:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 23:58:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-29 23:58:20,814 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-11-29 23:58:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:20,814 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-29 23:58:20,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:58:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-29 23:58:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:58:20,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:20,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:20,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:58:20,815 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-11-29 23:58:20,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:20,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252613647] [2020-11-29 23:58:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:21,021 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 23:58:21,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252613647] [2020-11-29 23:58:21,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:21,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 23:58:21,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004980173] [2020-11-29 23:58:21,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:58:21,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:21,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:58:21,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:58:21,024 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-11-29 23:58:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:21,145 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-29 23:58:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:58:21,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 23:58:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:21,146 INFO L225 Difference]: With dead ends: 27 [2020-11-29 23:58:21,146 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:58:21,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:58:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:58:21,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:58:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:58:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:58:21,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 23:58:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:21,148 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:58:21,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:58:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:58:21,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:58:21,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 23:58:21,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:21 BasicIcfg [2020-11-29 23:58:21,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:58:21,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:21,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:21,153 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:21,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:15" (3/4) ... [2020-11-29 23:58:21,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:58:21,165 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 23:58:21,165 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 23:58:21,165 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 23:58:21,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 23:58:21,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:58:21,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:58:21,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:58:21,219 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2970f5ca-cc1c-4ea6-b7d6-067be5395882/bin/uautomizer/witness.graphml [2020-11-29 23:58:21,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:21,221 INFO L168 Benchmark]: Toolchain (without parser) took 7901.38 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 69.1 MB in the beginning and 93.2 MB in the end (delta: -24.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:21,222 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:21,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 890.03 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 54.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:21,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.74 ms. Allocated memory is still 98.6 MB. Free memory was 54.5 MB in the beginning and 52.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:21,224 INFO L168 Benchmark]: Boogie Preprocessor took 64.13 ms. Allocated memory is still 98.6 MB. Free memory was 52.5 MB in the beginning and 51.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:21,224 INFO L168 Benchmark]: RCFGBuilder took 714.50 ms. Allocated memory is still 98.6 MB. Free memory was 51.4 MB in the beginning and 69.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:21,225 INFO L168 Benchmark]: TraceAbstraction took 6066.48 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 69.3 MB in the beginning and 96.4 MB in the end (delta: -27.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:21,226 INFO L168 Benchmark]: Witness Printer took 67.14 ms. Allocated memory is still 144.7 MB. Free memory was 96.4 MB in the beginning and 93.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:21,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 890.03 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 54.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.74 ms. Allocated memory is still 98.6 MB. Free memory was 54.5 MB in the beginning and 52.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.13 ms. Allocated memory is still 98.6 MB. Free memory was 52.5 MB in the beginning and 51.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 714.50 ms. Allocated memory is still 98.6 MB. Free memory was 51.4 MB in the beginning and 69.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6066.48 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 69.3 MB in the beginning and 96.4 MB in the end (delta: -27.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * Witness Printer took 67.14 ms. Allocated memory is still 144.7 MB. Free memory was 96.4 MB in the beginning and 93.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 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 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 6880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...