./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_tso.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_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/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 7b9ee3f88e8f44d2d06ff193dda062789325bd80 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 21:01:21,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:01:21,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:01:21,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:01:21,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:01:21,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:01:21,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:01:21,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:01:21,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:01:21,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:01:21,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:01:21,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:01:21,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:01:21,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:01:21,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:01:21,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:01:21,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:01:21,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:01:21,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:01:21,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:01:21,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:01:21,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:01:21,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:01:21,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:01:21,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:01:21,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:01:21,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:01:21,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:01:21,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:01:21,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:01:21,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:01:21,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:01:21,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:01:21,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:01:21,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:01:21,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:01:21,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:01:21,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:01:21,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:01:21,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:01:21,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:01:21,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:01:22,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:01:22,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:01:22,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:01:22,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:01:22,025 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:01:22,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:01:22,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:01:22,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:01:22,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:01:22,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:01:22,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:01:22,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:01:22,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:01:22,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:01:22,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:01:22,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:01:22,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:01:22,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:01:22,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:01:22,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:01:22,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:01:22,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:01:22,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:01:22,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:01:22,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:01:22,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:01:22,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:01:22,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:01:22,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:01:22,033 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_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b9ee3f88e8f44d2d06ff193dda062789325bd80 [2020-11-29 21:01:22,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:01:22,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:01:22,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:01:22,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:01:22,347 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:01:22,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-11-29 21:01:22,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/data/2390e5500/4f36c7f03be04603aea8ea175571d425/FLAG6426c4c09 [2020-11-29 21:01:22,996 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:01:22,997 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-11-29 21:01:23,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/data/2390e5500/4f36c7f03be04603aea8ea175571d425/FLAG6426c4c09 [2020-11-29 21:01:23,311 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/data/2390e5500/4f36c7f03be04603aea8ea175571d425 [2020-11-29 21:01:23,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:01:23,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:01:23,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:01:23,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:01:23,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:01:23,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:23,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26446dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23, skipping insertion in model container [2020-11-29 21:01:23,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:23,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:01:23,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:01:23,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:01:23,813 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:01:23,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:01:23,935 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:01:23,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23 WrapperNode [2020-11-29 21:01:23,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:01:23,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:01:23,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:01:23,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:01:23,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:23,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:23,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:01:23,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:01:23,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:01:23,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:01:23,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... [2020-11-29 21:01:24,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:01:24,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:01:24,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:01:24,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:01:24,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/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 21:01:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:01:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 21:01:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:01:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:01:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 21:01:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 21:01:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 21:01:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 21:01:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 21:01:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 21:01:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:01:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 21:01:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:01:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:01:24,107 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 21:01:24,547 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:01:24,547 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 21:01:24,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:01:24 BoogieIcfgContainer [2020-11-29 21:01:24,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:01:24,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:01:24,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:01:24,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:01:24,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:01:23" (1/3) ... [2020-11-29 21:01:24,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc23e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:01:24, skipping insertion in model container [2020-11-29 21:01:24,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:01:23" (2/3) ... [2020-11-29 21:01:24,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc23e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:01:24, skipping insertion in model container [2020-11-29 21:01:24,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:01:24" (3/3) ... [2020-11-29 21:01:24,560 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2020-11-29 21:01:24,572 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 21:01:24,572 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:01:24,577 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:01:24,579 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 21:01:24,616 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,616 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,616 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,617 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,617 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,618 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,618 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,619 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,619 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,651 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,651 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:01:24,662 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 21:01:24,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 21:01:24,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:01:24,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:01:24,717 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:01:24,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:01:24,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:01:24,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:01:24,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:01:24,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:01:24,739 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 21:01:24,742 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 21:01:24,746 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 21:01:24,748 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-29 21:01:24,827 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-29 21:01:24,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 21:01:24,835 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. [2020-11-29 21:01:24,841 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 21:01:26,648 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-29 21:01:27,213 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-29 21:01:27,334 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-29 21:01:27,334 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-29 21:01:27,339 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-29 21:01:27,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-29 21:01:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-29 21:01:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:01:27,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:27,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:27,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-29 21:01:27,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:27,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192573068] [2020-11-29 21:01:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:27,620 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 21:01:27,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192573068] [2020-11-29 21:01:27,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:27,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:01:27,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128368459] [2020-11-29 21:01:27,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:01:27,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:27,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:01:27,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:01:27,656 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-29 21:01:27,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:27,701 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-29 21:01:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:01:27,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 21:01:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:27,731 INFO L225 Difference]: With dead ends: 362 [2020-11-29 21:01:27,731 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 21:01:27,733 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 21:01:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 21:01:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-29 21:01:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-29 21:01:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-29 21:01:27,835 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-29 21:01:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:27,836 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-29 21:01:27,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:01:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-29 21:01:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:01:27,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:27,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:27,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:01:27,839 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:27,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:27,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-29 21:01:27,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:27,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646265318] [2020-11-29 21:01:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:28,010 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 21:01:28,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646265318] [2020-11-29 21:01:28,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:28,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:01:28,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32253291] [2020-11-29 21:01:28,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:01:28,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:01:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:01:28,013 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-29 21:01:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:28,093 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-29 21:01:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:01:28,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-29 21:01:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:28,098 INFO L225 Difference]: With dead ends: 330 [2020-11-29 21:01:28,099 INFO L226 Difference]: Without dead ends: 266 [2020-11-29 21:01:28,100 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 [2020-11-29 21:01:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-29 21:01:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-29 21:01:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-29 21:01:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-29 21:01:28,139 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-29 21:01:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:28,139 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-29 21:01:28,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:01:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-29 21:01:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:01:28,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:28,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:28,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:01:28,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:28,143 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-29 21:01:28,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:28,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321127578] [2020-11-29 21:01:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:28,235 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 21:01:28,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321127578] [2020-11-29 21:01:28,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:28,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:01:28,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48507056] [2020-11-29 21:01:28,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:01:28,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:28,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:01:28,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:01:28,237 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-11-29 21:01:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:28,302 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-29 21:01:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:01:28,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 21:01:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:28,307 INFO L225 Difference]: With dead ends: 290 [2020-11-29 21:01:28,307 INFO L226 Difference]: Without dead ends: 242 [2020-11-29 21:01:28,307 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 [2020-11-29 21:01:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-29 21:01:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-29 21:01:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-29 21:01:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-29 21:01:28,322 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-29 21:01:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:28,323 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-29 21:01:28,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:01:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-29 21:01:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:01:28,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:28,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:28,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:01:28,325 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-11-29 21:01:28,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:28,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787181416] [2020-11-29 21:01:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:28,398 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 21:01:28,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787181416] [2020-11-29 21:01:28,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:28,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:01:28,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903040550] [2020-11-29 21:01:28,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:01:28,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:28,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:01:28,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:01:28,401 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-11-29 21:01:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:28,422 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-29 21:01:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:01:28,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 21:01:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:28,426 INFO L225 Difference]: With dead ends: 260 [2020-11-29 21:01:28,426 INFO L226 Difference]: Without dead ends: 224 [2020-11-29 21:01:28,426 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 21:01:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-29 21:01:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-29 21:01:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-29 21:01:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-29 21:01:28,437 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-29 21:01:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:28,438 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-29 21:01:28,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:01:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-29 21:01:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:01:28,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:28,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:28,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:01:28,440 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:28,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:28,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-11-29 21:01:28,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:28,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283257894] [2020-11-29 21:01:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:28,516 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 21:01:28,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283257894] [2020-11-29 21:01:28,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:28,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:01:28,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750723277] [2020-11-29 21:01:28,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:01:28,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:28,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:01:28,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:01:28,519 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-11-29 21:01:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:28,572 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-11-29 21:01:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:01:28,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:01:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:28,574 INFO L225 Difference]: With dead ends: 293 [2020-11-29 21:01:28,575 INFO L226 Difference]: Without dead ends: 146 [2020-11-29 21:01:28,575 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 21:01:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-29 21:01:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-29 21:01:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 21:01:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-11-29 21:01:28,582 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-11-29 21:01:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:28,582 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-11-29 21:01:28,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:01:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-11-29 21:01:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:01:28,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:28,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:28,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:01:28,584 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:28,584 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-11-29 21:01:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:28,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318362845] [2020-11-29 21:01:28,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:28,665 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 21:01:28,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318362845] [2020-11-29 21:01:28,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:28,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:01:28,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516999106] [2020-11-29 21:01:28,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:01:28,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:01:28,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:01:28,668 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-11-29 21:01:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:28,745 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-11-29 21:01:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:01:28,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 21:01:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:28,748 INFO L225 Difference]: With dead ends: 160 [2020-11-29 21:01:28,748 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 21:01:28,749 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 21:01:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 21:01:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-29 21:01:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 21:01:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-11-29 21:01:28,757 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-11-29 21:01:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:28,758 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-11-29 21:01:28,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:01:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-11-29 21:01:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:01:28,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:28,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:28,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:01:28,760 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:28,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-11-29 21:01:28,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:28,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721993749] [2020-11-29 21:01:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:28,888 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 21:01:28,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721993749] [2020-11-29 21:01:28,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:28,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:01:28,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505263207] [2020-11-29 21:01:28,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:01:28,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:01:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:01:28,890 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-11-29 21:01:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:28,944 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-11-29 21:01:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:01:28,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 21:01:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:28,946 INFO L225 Difference]: With dead ends: 186 [2020-11-29 21:01:28,946 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 21:01:28,946 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 [2020-11-29 21:01:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 21:01:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-29 21:01:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 21:01:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-11-29 21:01:28,950 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-11-29 21:01:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:28,950 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-11-29 21:01:28,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:01:28,951 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-11-29 21:01:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:01:28,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:28,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:28,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:01:28,952 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:01:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-11-29 21:01:28,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:28,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786670628] [2020-11-29 21:01:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:29,075 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 21:01:29,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786670628] [2020-11-29 21:01:29,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:29,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:01:29,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774557258] [2020-11-29 21:01:29,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:01:29,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:29,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:01:29,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:01:29,078 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-11-29 21:01:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:29,161 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-11-29 21:01:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:01:29,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 21:01:29,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:29,162 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:01:29,163 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:01:29,163 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 [2020-11-29 21:01:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:01:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:01:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:01:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:01:29,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-29 21:01:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:29,164 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:01:29,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:01:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:01:29,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:01:29,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:01:29,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:01:29 BasicIcfg [2020-11-29 21:01:29,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:01:29,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:01:29,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:01:29,176 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:01:29,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:01:24" (3/4) ... [2020-11-29 21:01:29,180 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:01:29,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 21:01:29,189 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 21:01:29,189 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 21:01:29,202 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 21:01:29,202 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:01:29,202 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:01:29,203 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:01:29,276 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_17f6308a-8ac8-4cb6-87a5-bb65be3fd201/bin/uautomizer/witness.graphml [2020-11-29 21:01:29,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:01:29,278 INFO L168 Benchmark]: Toolchain (without parser) took 5962.27 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 52.2 MB in the beginning and 77.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:29,279 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 83.9 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:01:29,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.17 ms. Allocated memory is still 83.9 MB. Free memory was 52.0 MB in the beginning and 40.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:29,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.73 ms. Allocated memory is still 83.9 MB. Free memory was 40.6 MB in the beginning and 38.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:29,280 INFO L168 Benchmark]: Boogie Preprocessor took 30.28 ms. Allocated memory is still 83.9 MB. Free memory was 38.6 MB in the beginning and 37.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:01:29,281 INFO L168 Benchmark]: RCFGBuilder took 529.29 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 37.2 MB in the beginning and 73.9 MB in the end (delta: -36.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:29,281 INFO L168 Benchmark]: TraceAbstraction took 4619.34 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 80.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:29,282 INFO L168 Benchmark]: Witness Printer took 104.80 ms. Allocated memory is still 134.2 MB. Free memory was 80.7 MB in the beginning and 77.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:29,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 83.9 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 608.17 ms. Allocated memory is still 83.9 MB. Free memory was 52.0 MB in the beginning and 40.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.73 ms. Allocated memory is still 83.9 MB. Free memory was 40.6 MB in the beginning and 38.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.28 ms. Allocated memory is still 83.9 MB. Free memory was 38.6 MB in the beginning and 37.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 529.29 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 37.2 MB in the beginning and 73.9 MB in the end (delta: -36.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4619.34 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 80.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 104.80 ms. Allocated memory is still 134.2 MB. Free memory was 80.7 MB in the beginning and 77.5 MB in the end (delta: 3.1 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: 2.5s, 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: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s 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...