./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.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_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/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 69a6a28dd1255bef403cf689b671dd8e1090efae .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:36:00,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:36:00,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:36:01,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:36:01,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:36:01,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:36:01,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:36:01,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:36:01,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:36:01,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:36:01,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:36:01,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:36:01,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:36:01,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:36:01,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:36:01,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:36:01,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:36:01,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:36:01,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:36:01,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:36:01,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:36:01,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:36:01,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:36:01,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:36:01,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:36:01,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:36:01,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:36:01,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:36:01,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:36:01,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:36:01,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:36:01,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:36:01,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:36:01,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:36:01,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:36:01,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:36:01,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:36:01,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:36:01,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:36:01,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:36:01,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:36:01,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:36:01,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:36:01,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:36:01,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:36:01,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:36:01,139 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:36:01,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:36:01,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:36:01,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:36:01,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:36:01,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:36:01,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:36:01,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:36:01,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:36:01,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:36:01,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:36:01,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:36:01,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:36:01,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:36:01,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:36:01,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:36:01,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:36:01,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:36:01,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:36:01,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:36:01,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:36:01,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:36:01,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:36:01,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:36:01,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:36:01,145 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_9874feea-bd8e-4ce6-a2b7-22cc8508f076/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a6a28dd1255bef403cf689b671dd8e1090efae [2020-11-30 00:36:01,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:36:01,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:36:01,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:36:01,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:36:01,510 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:36:01,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i [2020-11-30 00:36:01,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/data/71a9d5008/43ca53d2e2ca4225aa6d970d543ee919/FLAG36fc06a91 [2020-11-30 00:36:02,197 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:36:02,202 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i [2020-11-30 00:36:02,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/data/71a9d5008/43ca53d2e2ca4225aa6d970d543ee919/FLAG36fc06a91 [2020-11-30 00:36:02,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/data/71a9d5008/43ca53d2e2ca4225aa6d970d543ee919 [2020-11-30 00:36:02,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:36:02,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:36:02,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:36:02,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:36:02,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:36:02,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5c4a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02, skipping insertion in model container [2020-11-30 00:36:02,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:36:02,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:36:03,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:36:03,016 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:36:03,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:36:03,194 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:36:03,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03 WrapperNode [2020-11-30 00:36:03,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:36:03,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:36:03,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:36:03,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:36:03,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:36:03,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:36:03,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:36:03,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:36:03,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... [2020-11-30 00:36:03,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:36:03,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:36:03,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:36:03,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:36:03,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/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 [2020-11-30 00:36:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:36:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 00:36:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:36:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:36:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-30 00:36:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-30 00:36:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-30 00:36:03,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-30 00:36:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-30 00:36:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-30 00:36:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:36:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 00:36:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:36:03,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:36:03,404 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:36:03,845 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:36:03,845 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:36:03,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:36:03 BoogieIcfgContainer [2020-11-30 00:36:03,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:36:03,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:36:03,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:36:03,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:36:03,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:36:02" (1/3) ... [2020-11-30 00:36:03,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7f75fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:36:03, skipping insertion in model container [2020-11-30 00:36:03,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:03" (2/3) ... [2020-11-30 00:36:03,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7f75fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:36:03, skipping insertion in model container [2020-11-30 00:36:03,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:36:03" (3/3) ... [2020-11-30 00:36:03,859 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-11-30 00:36:03,870 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:36:03,871 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:36:03,875 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:36:03,876 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:36:03,907 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,910 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,910 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,912 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,912 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,913 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,920 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,929 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,929 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,929 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,929 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:36:03,931 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 00:36:03,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:36:03,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:36:03,983 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:36:03,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:36:03,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:36:03,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:36:03,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:36:03,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:36:03,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:36:04,004 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:36:04,006 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-30 00:36:04,010 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-30 00:36:04,012 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-30 00:36:04,104 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-30 00:36:04,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 00:36:04,109 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 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. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-30 00:36:04,116 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-30 00:36:06,377 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-30 00:36:06,494 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-30 00:36:06,508 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-30 00:36:06,509 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-30 00:36:06,514 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-30 00:36:06,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-30 00:36:06,565 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-30 00:36:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:36:06,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:06,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:06,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-30 00:36:06,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:06,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331238537] [2020-11-30 00:36:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:06,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331238537] [2020-11-30 00:36:06,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:06,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:36:06,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793114496] [2020-11-30 00:36:06,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:36:06,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:06,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:36:06,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:36:06,914 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-30 00:36:06,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:06,970 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-30 00:36:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:36:06,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 00:36:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:07,000 INFO L225 Difference]: With dead ends: 362 [2020-11-30 00:36:07,001 INFO L226 Difference]: Without dead ends: 298 [2020-11-30 00:36:07,003 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 [2020-11-30 00:36:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-30 00:36:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-30 00:36:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-30 00:36:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-30 00:36:07,121 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-30 00:36:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:07,122 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-30 00:36:07,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:36:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-30 00:36:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:36:07,130 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:07,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:07,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:36:07,132 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-30 00:36:07,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402867441] [2020-11-30 00:36:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:07,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402867441] [2020-11-30 00:36:07,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:07,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:36:07,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905521873] [2020-11-30 00:36:07,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:36:07,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:07,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:36:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:36:07,283 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-30 00:36:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:07,364 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-30 00:36:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:36:07,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 00:36:07,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:07,371 INFO L225 Difference]: With dead ends: 330 [2020-11-30 00:36:07,371 INFO L226 Difference]: Without dead ends: 266 [2020-11-30 00:36:07,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:36:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-30 00:36:07,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-30 00:36:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-30 00:36:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-30 00:36:07,405 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-30 00:36:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:07,405 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-30 00:36:07,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:36:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-30 00:36:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:36:07,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:07,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:07,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:36:07,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-30 00:36:07,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55233727] [2020-11-30 00:36:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:07,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55233727] [2020-11-30 00:36:07,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:07,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:36:07,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527700474] [2020-11-30 00:36:07,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:36:07,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:07,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:36:07,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:36:07,546 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-11-30 00:36:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:07,615 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-30 00:36:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:36:07,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:36:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:07,619 INFO L225 Difference]: With dead ends: 290 [2020-11-30 00:36:07,619 INFO L226 Difference]: Without dead ends: 242 [2020-11-30 00:36:07,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:36:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-30 00:36:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-30 00:36:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-30 00:36:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-30 00:36:07,634 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-30 00:36:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:07,634 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-30 00:36:07,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:36:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-30 00:36:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:36:07,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:07,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:07,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:36:07,642 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-11-30 00:36:07,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060693704] [2020-11-30 00:36:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:07,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060693704] [2020-11-30 00:36:07,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:07,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:36:07,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490677890] [2020-11-30 00:36:07,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:36:07,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:07,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:36:07,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:36:07,736 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-11-30 00:36:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:07,763 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-30 00:36:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:36:07,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:36:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:07,766 INFO L225 Difference]: With dead ends: 260 [2020-11-30 00:36:07,766 INFO L226 Difference]: Without dead ends: 224 [2020-11-30 00:36:07,766 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 [2020-11-30 00:36:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-30 00:36:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-30 00:36:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-30 00:36:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-30 00:36:07,776 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-30 00:36:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:07,777 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-30 00:36:07,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:36:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-30 00:36:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:36:07,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:07,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:07,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:36:07,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-11-30 00:36:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393981812] [2020-11-30 00:36:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:07,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393981812] [2020-11-30 00:36:07,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:07,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:36:07,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391544184] [2020-11-30 00:36:07,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:36:07,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:36:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:36:07,836 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-11-30 00:36:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:07,908 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-11-30 00:36:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:36:07,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 00:36:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:07,910 INFO L225 Difference]: With dead ends: 293 [2020-11-30 00:36:07,910 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 00:36:07,911 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 [2020-11-30 00:36:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 00:36:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-30 00:36:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-30 00:36:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-11-30 00:36:07,921 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-11-30 00:36:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:07,921 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-11-30 00:36:07,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:36:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-11-30 00:36:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:36:07,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:07,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:07,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:36:07,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-11-30 00:36:07,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924263584] [2020-11-30 00:36:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:08,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924263584] [2020-11-30 00:36:08,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:08,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:36:08,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585668351] [2020-11-30 00:36:08,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:36:08,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:08,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:36:08,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:36:08,006 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-11-30 00:36:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:08,044 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-11-30 00:36:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:36:08,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:36:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:08,046 INFO L225 Difference]: With dead ends: 160 [2020-11-30 00:36:08,046 INFO L226 Difference]: Without dead ends: 142 [2020-11-30 00:36:08,047 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 [2020-11-30 00:36:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-30 00:36:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-30 00:36:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-30 00:36:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-11-30 00:36:08,053 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-11-30 00:36:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:08,054 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-11-30 00:36:08,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:36:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-11-30 00:36:08,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:36:08,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:08,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:08,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:36:08,055 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:08,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:08,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-11-30 00:36:08,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:08,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351391130] [2020-11-30 00:36:08,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:08,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351391130] [2020-11-30 00:36:08,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:08,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:36:08,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729868777] [2020-11-30 00:36:08,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:36:08,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:08,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:36:08,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:36:08,142 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-11-30 00:36:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:08,188 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-11-30 00:36:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:36:08,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 00:36:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:08,189 INFO L225 Difference]: With dead ends: 186 [2020-11-30 00:36:08,190 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 00:36:08,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:36:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 00:36:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 00:36:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 00:36:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-11-30 00:36:08,193 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-11-30 00:36:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:08,194 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-11-30 00:36:08,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:36:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-11-30 00:36:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:36:08,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:36:08,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:08,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:36:08,195 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:36:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-11-30 00:36:08,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:08,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222717605] [2020-11-30 00:36:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:08,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222717605] [2020-11-30 00:36:08,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:08,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:36:08,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555582635] [2020-11-30 00:36:08,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:36:08,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:08,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:36:08,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:36:08,290 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-11-30 00:36:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:08,376 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-11-30 00:36:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:36:08,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:36:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:36:08,376 INFO L225 Difference]: With dead ends: 62 [2020-11-30 00:36:08,376 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:36:08,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:36:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:36:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:36:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:36:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:36:08,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-30 00:36:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:36:08,378 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:36:08,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:36:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:36:08,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:36:08,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:36:08,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:36:08 BasicIcfg [2020-11-30 00:36:08,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:36:08,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:36:08,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:36:08,382 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:36:08,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:36:03" (3/4) ... [2020-11-30 00:36:08,391 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:36:08,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-30 00:36:08,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-30 00:36:08,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-30 00:36:08,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:36:08,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:36:08,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:36:08,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:36:08,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9874feea-bd8e-4ce6-a2b7-22cc8508f076/bin/uautomizer/witness.graphml [2020-11-30 00:36:08,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:36:08,467 INFO L168 Benchmark]: Toolchain (without parser) took 6010.16 ms. Allocated memory was 90.2 MB in the beginning and 146.8 MB in the end (delta: 56.6 MB). Free memory was 58.6 MB in the beginning and 63.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,468 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:36:08,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.65 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 58.2 MB in the beginning and 74.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.72 ms. Allocated memory is still 119.5 MB. Free memory was 74.9 MB in the beginning and 72.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,470 INFO L168 Benchmark]: Boogie Preprocessor took 34.37 ms. Allocated memory is still 119.5 MB. Free memory was 72.8 MB in the beginning and 71.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,470 INFO L168 Benchmark]: RCFGBuilder took 543.30 ms. Allocated memory is still 119.5 MB. Free memory was 71.4 MB in the beginning and 49.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,471 INFO L168 Benchmark]: TraceAbstraction took 4532.80 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 49.0 MB in the beginning and 66.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,471 INFO L168 Benchmark]: Witness Printer took 83.81 ms. Allocated memory is still 146.8 MB. Free memory was 66.0 MB in the beginning and 63.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.65 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 58.2 MB in the beginning and 74.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.72 ms. Allocated memory is still 119.5 MB. Free memory was 74.9 MB in the beginning and 72.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.37 ms. Allocated memory is still 119.5 MB. Free memory was 72.8 MB in the beginning and 71.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 543.30 ms. Allocated memory is still 119.5 MB. Free memory was 71.4 MB in the beginning and 49.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4532.80 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 49.0 MB in the beginning and 66.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 83.81 ms. Allocated memory is still 146.8 MB. Free memory was 66.0 MB in the beginning and 63.9 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 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...