./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.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_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/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 5c886f694f55e62d2d7ee054d88d9b6d1c1dd73c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:10:44,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:10:44,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:10:44,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:10:44,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:10:44,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:10:44,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:10:44,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:10:44,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:10:44,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:10:44,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:10:44,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:10:44,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:10:44,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:10:44,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:10:44,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:10:44,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:10:44,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:10:44,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:10:44,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:10:44,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:10:44,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:10:44,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:10:44,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:10:44,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:10:44,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:10:44,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:10:44,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:10:44,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:10:44,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:10:44,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:10:44,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:10:44,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:10:44,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:10:44,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:10:44,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:10:44,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:10:44,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:10:44,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:10:44,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:10:44,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:10:44,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:10:44,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:10:44,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:10:44,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:10:44,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:10:44,359 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:10:44,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:10:44,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:10:44,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:10:44,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:10:44,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:10:44,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:10:44,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:10:44,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:10:44,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:10:44,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:10:44,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:10:44,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:10:44,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:10:44,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:10:44,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:10:44,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:10:44,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:44,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:10:44,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:10:44,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:10:44,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:10:44,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:10:44,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:10:44,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:10:44,365 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_85f721ac-f98c-4b13-aa72-27b6d3a304bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c886f694f55e62d2d7ee054d88d9b6d1c1dd73c [2020-11-28 03:10:44,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:10:44,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:10:44,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:10:44,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:10:44,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:10:44,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i [2020-11-28 03:10:44,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/data/ea481c65b/0cd24ac1855748a08ad54fe92dd9c260/FLAG81fbe72a5 [2020-11-28 03:10:45,459 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:10:45,460 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i [2020-11-28 03:10:45,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/data/ea481c65b/0cd24ac1855748a08ad54fe92dd9c260/FLAG81fbe72a5 [2020-11-28 03:10:45,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/data/ea481c65b/0cd24ac1855748a08ad54fe92dd9c260 [2020-11-28 03:10:45,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:10:45,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:10:45,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:45,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:10:45,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:10:45,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:45" (1/1) ... [2020-11-28 03:10:45,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48278ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:45, skipping insertion in model container [2020-11-28 03:10:45,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:45" (1/1) ... [2020-11-28 03:10:45,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:10:45,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:10:46,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:46,277 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:10:46,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:46,460 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:10:46,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46 WrapperNode [2020-11-28 03:10:46,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:46,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:46,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:10:46,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:10:46,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:46,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:10:46,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:10:46,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:10:46,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... [2020-11-28 03:10:46,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:10:46,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:10:46,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:10:46,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:10:46,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/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 [2020-11-28 03:10:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:10:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:10:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:10:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:10:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:10:46,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:10:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:10:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:10:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:10:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:10:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:10:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:10:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:10:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:10:46,618 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:10:47,103 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:10:47,103 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:10:47,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:47 BoogieIcfgContainer [2020-11-28 03:10:47,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:10:47,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:10:47,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:10:47,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:10:47,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:45" (1/3) ... [2020-11-28 03:10:47,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e14581c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:47, skipping insertion in model container [2020-11-28 03:10:47,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:46" (2/3) ... [2020-11-28 03:10:47,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e14581c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:47, skipping insertion in model container [2020-11-28 03:10:47,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:47" (3/3) ... [2020-11-28 03:10:47,116 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-11-28 03:10:47,137 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:10:47,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:10:47,142 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:10:47,143 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:10:47,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,210 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,214 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,215 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:47,223 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:10:47,236 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:10:47,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:10:47,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:10:47,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:10:47,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:10:47,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:10:47,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:10:47,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:10:47,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:10:47,298 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:10:47,301 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:10:47,305 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:10:47,307 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:10:47,384 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:10:47,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:10:47,389 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. [2020-11-28 03:10:47,395 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:10:49,707 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 03:10:49,835 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 03:10:49,850 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 03:10:49,850 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 03:10:49,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:10:49,886 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:10:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:10:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:10:49,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:49,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:49,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 03:10:49,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190322947] [2020-11-28 03:10:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:50,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190322947] [2020-11-28 03:10:50,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:50,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:10:50,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946433911] [2020-11-28 03:10:50,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:10:50,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:10:50,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:10:50,106 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:10:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:50,143 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:10:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:10:50,144 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:10:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:50,161 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:10:50,162 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:10:50,163 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 [2020-11-28 03:10:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:10:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:10:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:10:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:10:50,243 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:10:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:50,244 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:10:50,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:10:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:10:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:10:50,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:50,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:50,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:10:50,248 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 03:10:50,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:50,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047302894] [2020-11-28 03:10:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:50,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047302894] [2020-11-28 03:10:50,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:50,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:50,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017108882] [2020-11-28 03:10:50,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:10:50,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:10:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:50,423 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 03:10:50,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:50,496 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 03:10:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:10:50,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:10:50,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:50,501 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:10:50,501 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 03:10:50,502 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 [2020-11-28 03:10:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 03:10:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 03:10:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 03:10:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 03:10:50,536 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 03:10:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:50,538 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 03:10:50,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:10:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 03:10:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:10:50,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:50,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:50,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:10:50,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-11-28 03:10:50,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:50,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731419257] [2020-11-28 03:10:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:50,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731419257] [2020-11-28 03:10:50,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:50,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:50,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499211315] [2020-11-28 03:10:50,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:10:50,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:50,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:10:50,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:10:50,654 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-28 03:10:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:50,783 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-11-28 03:10:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:10:50,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:10:50,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:50,786 INFO L225 Difference]: With dead ends: 344 [2020-11-28 03:10:50,786 INFO L226 Difference]: Without dead ends: 170 [2020-11-28 03:10:50,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:10:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-28 03:10:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-28 03:10:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-28 03:10:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-11-28 03:10:50,799 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-11-28 03:10:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:50,799 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-11-28 03:10:50,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:10:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-11-28 03:10:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:10:50,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:50,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:50,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:10:50,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:50,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:50,802 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-11-28 03:10:50,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:50,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968455541] [2020-11-28 03:10:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:50,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968455541] [2020-11-28 03:10:50,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:50,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:10:50,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822640726] [2020-11-28 03:10:50,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:50,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:50,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:50,880 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 4 states. [2020-11-28 03:10:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:50,916 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-11-28 03:10:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:50,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:10:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:50,918 INFO L225 Difference]: With dead ends: 182 [2020-11-28 03:10:50,918 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 03:10:50,919 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 [2020-11-28 03:10:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 03:10:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-28 03:10:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 03:10:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-11-28 03:10:50,941 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-11-28 03:10:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:50,941 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-11-28 03:10:50,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-11-28 03:10:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:10:50,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:50,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:50,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:10:50,947 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1697755731, now seen corresponding path program 1 times [2020-11-28 03:10:50,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:50,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301650258] [2020-11-28 03:10:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:51,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301650258] [2020-11-28 03:10:51,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:51,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:10:51,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619601247] [2020-11-28 03:10:51,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:10:51,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:51,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:10:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:10:51,080 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 7 states. [2020-11-28 03:10:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:51,226 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-11-28 03:10:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:10:51,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 03:10:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:51,230 INFO L225 Difference]: With dead ends: 172 [2020-11-28 03:10:51,230 INFO L226 Difference]: Without dead ends: 130 [2020-11-28 03:10:51,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:10:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-28 03:10:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-11-28 03:10:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:10:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-11-28 03:10:51,249 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-11-28 03:10:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:51,249 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-11-28 03:10:51,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:10:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-11-28 03:10:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:10:51,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:51,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:51,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:10:51,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-11-28 03:10:51,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:51,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101726960] [2020-11-28 03:10:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:51,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101726960] [2020-11-28 03:10:51,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:51,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:51,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275001533] [2020-11-28 03:10:51,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:51,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:51,340 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 4 states. [2020-11-28 03:10:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:51,376 INFO L93 Difference]: Finished difference Result 134 states and 317 transitions. [2020-11-28 03:10:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:51,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:10:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:51,378 INFO L225 Difference]: With dead ends: 134 [2020-11-28 03:10:51,378 INFO L226 Difference]: Without dead ends: 116 [2020-11-28 03:10:51,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-28 03:10:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-28 03:10:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-28 03:10:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-11-28 03:10:51,385 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 13 [2020-11-28 03:10:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:51,385 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-11-28 03:10:51,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:51,386 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-11-28 03:10:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:10:51,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:51,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:51,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:10:51,387 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:51,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-28 03:10:51,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:51,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048231764] [2020-11-28 03:10:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:51,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048231764] [2020-11-28 03:10:51,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:51,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:51,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872156148] [2020-11-28 03:10:51,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:51,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:51,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:51,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:51,486 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 4 states. [2020-11-28 03:10:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:51,524 INFO L93 Difference]: Finished difference Result 137 states and 301 transitions. [2020-11-28 03:10:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:51,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:10:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:51,526 INFO L225 Difference]: With dead ends: 137 [2020-11-28 03:10:51,527 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:10:51,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:10:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-28 03:10:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:10:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 208 transitions. [2020-11-28 03:10:51,532 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 208 transitions. Word has length 14 [2020-11-28 03:10:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:51,532 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 208 transitions. [2020-11-28 03:10:51,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 208 transitions. [2020-11-28 03:10:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:10:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:51,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:51,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:10:51,534 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-28 03:10:51,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:51,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67027318] [2020-11-28 03:10:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:51,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67027318] [2020-11-28 03:10:51,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:51,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:51,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595639419] [2020-11-28 03:10:51,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:10:51,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:51,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:10:51,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:51,607 INFO L87 Difference]: Start difference. First operand 97 states and 208 transitions. Second operand 5 states. [2020-11-28 03:10:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:51,666 INFO L93 Difference]: Finished difference Result 95 states and 185 transitions. [2020-11-28 03:10:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:51,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:10:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:51,668 INFO L225 Difference]: With dead ends: 95 [2020-11-28 03:10:51,668 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 03:10:51,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:10:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 03:10:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-28 03:10:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:10:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-11-28 03:10:51,672 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 15 [2020-11-28 03:10:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:51,672 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-11-28 03:10:51,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:10:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-11-28 03:10:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:10:51,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:51,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:51,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:10:51,673 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:51,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-28 03:10:51,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:51,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301678305] [2020-11-28 03:10:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:51,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301678305] [2020-11-28 03:10:51,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:51,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:10:51,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078525284] [2020-11-28 03:10:51,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:10:51,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:51,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:10:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:10:51,763 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 6 states. [2020-11-28 03:10:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:51,841 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2020-11-28 03:10:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:10:51,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:10:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:51,843 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:10:51,843 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:10:51,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:10:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:10:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 03:10:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:10:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-28 03:10:51,846 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-11-28 03:10:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:51,846 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-28 03:10:51,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:10:51,846 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-28 03:10:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:10:51,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:51,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:51,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:10:51,847 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-28 03:10:51,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:51,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955099408] [2020-11-28 03:10:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955099408] [2020-11-28 03:10:51,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:51,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:51,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296895128] [2020-11-28 03:10:51,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:10:51,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:10:51,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:51,914 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-28 03:10:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:51,958 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-28 03:10:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:51,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:10:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:51,959 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:10:51,959 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:10:51,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:10:51,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:10:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-28 03:10:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:10:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2020-11-28 03:10:51,961 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 18 [2020-11-28 03:10:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:51,962 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2020-11-28 03:10:51,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:10:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2020-11-28 03:10:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:10:51,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:51,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:51,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:10:51,963 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1171950116, now seen corresponding path program 2 times [2020-11-28 03:10:51,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:51,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734080120] [2020-11-28 03:10:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:52,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734080120] [2020-11-28 03:10:52,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:52,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:52,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326124927] [2020-11-28 03:10:52,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:10:52,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:52,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:10:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:52,048 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 5 states. [2020-11-28 03:10:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:52,100 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-11-28 03:10:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:10:52,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:10:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:52,101 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:10:52,102 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:10:52,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:10:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:10:52,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 03:10:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:10:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-28 03:10:52,104 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-28 03:10:52,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:52,104 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-28 03:10:52,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:10:52,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-28 03:10:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:10:52,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:52,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:52,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:10:52,105 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 3 times [2020-11-28 03:10:52,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:52,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586102587] [2020-11-28 03:10:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:52,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586102587] [2020-11-28 03:10:52,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:52,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844206616] [2020-11-28 03:10:52,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:10:52,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:52,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:10:52,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:52,191 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-28 03:10:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:52,248 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-28 03:10:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:52,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:10:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:52,249 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:10:52,249 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:10:52,249 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 [2020-11-28 03:10:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:10:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:10:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:10:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:10:52,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:10:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:52,250 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:10:52,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:10:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:10:52,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:10:52,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:10:52,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:52 BasicIcfg [2020-11-28 03:10:52,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:10:52,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:10:52,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:10:52,255 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:10:52,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:47" (3/4) ... [2020-11-28 03:10:52,259 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:10:52,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:10:52,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:10:52,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:10:52,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:10:52,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:10:52,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:52,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:52,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_85f721ac-f98c-4b13-aa72-27b6d3a304bc/bin/uautomizer/witness.graphml [2020-11-28 03:10:52,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:10:52,339 INFO L168 Benchmark]: Toolchain (without parser) took 6631.89 ms. Allocated memory was 86.0 MB in the beginning and 136.3 MB in the end (delta: 50.3 MB). Free memory was 61.9 MB in the beginning and 103.2 MB in the end (delta: -41.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,340 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 71.3 MB. Free memory was 50.0 MB in the beginning and 50.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:52,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.83 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 58.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.25 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 56.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,341 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 86.0 MB. Free memory was 56.9 MB in the beginning and 55.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,342 INFO L168 Benchmark]: RCFGBuilder took 570.35 ms. Allocated memory is still 86.0 MB. Free memory was 55.3 MB in the beginning and 59.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,348 INFO L168 Benchmark]: TraceAbstraction took 5146.68 ms. Allocated memory was 86.0 MB in the beginning and 136.3 MB in the end (delta: 50.3 MB). Free memory was 58.9 MB in the beginning and 106.4 MB in the end (delta: -47.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,349 INFO L168 Benchmark]: Witness Printer took 79.39 ms. Allocated memory is still 136.3 MB. Free memory was 106.4 MB in the beginning and 103.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:52,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 71.3 MB. Free memory was 50.0 MB in the beginning and 50.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 752.83 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 58.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.25 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 56.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 86.0 MB. Free memory was 56.9 MB in the beginning and 55.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 570.35 ms. Allocated memory is still 86.0 MB. Free memory was 55.3 MB in the beginning and 59.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5146.68 ms. Allocated memory was 86.0 MB in the beginning and 136.3 MB in the end (delta: 50.3 MB). Free memory was 58.9 MB in the beginning and 106.4 MB in the end (delta: -47.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 79.39 ms. Allocated memory is still 136.3 MB. Free memory was 106.4 MB in the beginning and 103.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 962 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 66 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: 4.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 228 SDtfs, 325 SDslu, 408 SDs, 0 SdLazy, 222 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s 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, 12 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 6560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...