./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/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 4f9168ff295249f67b2765c0795aeaeb041d1bf4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:07:45,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:45,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:45,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:45,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:45,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:45,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:45,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:45,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:45,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:45,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:45,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:45,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:45,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:45,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:45,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:45,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:45,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:45,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:45,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:45,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:45,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:45,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:45,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:45,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:45,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:45,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:45,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:45,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:45,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:45,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:45,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:45,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:45,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:45,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:45,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:45,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:45,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:45,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:45,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:45,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:45,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:07:45,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:45,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:45,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:45,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:45,685 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:45,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:45,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:07:45,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:45,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:07:45,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:45,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:45,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:45,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:45,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:07:45,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:45,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:45,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:45,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:45,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:45,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:45,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:45,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:45,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:45,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:45,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:45,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:45,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:07:45,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:45,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:45,694 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_25f18e2d-88e2-45f8-be15-73704513d1d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9168ff295249f67b2765c0795aeaeb041d1bf4 [2020-11-28 03:07:46,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:46,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:46,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:46,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:46,149 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:46,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i [2020-11-28 03:07:46,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/data/2af199091/55f5f7db64854b9fbe0cf0ad37365f3b/FLAGd2082d938 [2020-11-28 03:07:47,036 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:47,037 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i [2020-11-28 03:07:47,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/data/2af199091/55f5f7db64854b9fbe0cf0ad37365f3b/FLAGd2082d938 [2020-11-28 03:07:47,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/data/2af199091/55f5f7db64854b9fbe0cf0ad37365f3b [2020-11-28 03:07:47,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:47,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:47,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:47,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:47,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:47,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:47" (1/1) ... [2020-11-28 03:07:47,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffbc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:47, skipping insertion in model container [2020-11-28 03:07:47,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:47" (1/1) ... [2020-11-28 03:07:47,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:47,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:47,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:47,897 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:47,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:48,095 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:48,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48 WrapperNode [2020-11-28 03:07:48,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:48,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:48,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:48,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:48,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:48,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:48,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:48,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:48,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:48,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:48,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:48,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:48,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/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 03:07:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:07:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:07:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:07:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:07:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:07:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:07:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:07:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:07:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:07:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:07:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:07:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:07:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:48,353 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 03:07:49,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:49,041 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:07:49,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:49 BoogieIcfgContainer [2020-11-28 03:07:49,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:49,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:49,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:49,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:49,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:47" (1/3) ... [2020-11-28 03:07:49,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc2cba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:49, skipping insertion in model container [2020-11-28 03:07:49,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (2/3) ... [2020-11-28 03:07:49,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc2cba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:49, skipping insertion in model container [2020-11-28 03:07:49,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:49" (3/3) ... [2020-11-28 03:07:49,054 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-11-28 03:07:49,066 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:07:49,067 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:49,072 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:07:49,073 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:07:49,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,133 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,133 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,133 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,136 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,137 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,137 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:49,141 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:07:49,153 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:07:49,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:49,178 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:49,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:49,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:49,179 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:49,179 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:49,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:49,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:49,192 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:07:49,194 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 03:07:49,198 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 03:07:49,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-28 03:07:49,247 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-28 03:07:49,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:07:49,252 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:07:49,256 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:07:51,966 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-11-28 03:07:52,105 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-28 03:07:52,225 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 03:07:52,619 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-28 03:07:52,749 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 03:07:52,946 INFO L131 LiptonReduction]: Checked pairs total: 3321 [2020-11-28 03:07:52,947 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-28 03:07:52,953 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 03:07:52,983 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-28 03:07:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-28 03:07:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:07:52,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:52,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:52,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1248499387, now seen corresponding path program 1 times [2020-11-28 03:07:53,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196835267] [2020-11-28 03:07:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:53,290 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 03:07:53,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196835267] [2020-11-28 03:07:53,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:53,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:07:53,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890282764] [2020-11-28 03:07:53,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:07:53,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:53,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:07:53,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:53,324 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-28 03:07:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:53,388 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-28 03:07:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:07:53,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:07:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:53,407 INFO L225 Difference]: With dead ends: 282 [2020-11-28 03:07:53,408 INFO L226 Difference]: Without dead ends: 218 [2020-11-28 03:07:53,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-28 03:07:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-28 03:07:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 03:07:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-28 03:07:53,486 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-28 03:07:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:53,487 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-28 03:07:53,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:07:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-28 03:07:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:07:53,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:53,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:53,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:07:53,493 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash 48774317, now seen corresponding path program 1 times [2020-11-28 03:07:53,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655876651] [2020-11-28 03:07:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:53,635 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 03:07:53,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655876651] [2020-11-28 03:07:53,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:53,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:53,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170660407] [2020-11-28 03:07:53,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:07:53,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:07:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:07:53,639 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-28 03:07:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:53,684 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-28 03:07:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:07:53,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:07:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:53,691 INFO L225 Difference]: With dead ends: 242 [2020-11-28 03:07:53,691 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 03:07:53,692 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 03:07:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 03:07:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-28 03:07:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 03:07:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-28 03:07:53,720 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-28 03:07:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:53,721 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-28 03:07:53,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:07:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-28 03:07:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:07:53,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:53,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:53,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:07:53,723 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,724 INFO L82 PathProgramCache]: Analyzing trace with hash -604430829, now seen corresponding path program 1 times [2020-11-28 03:07:53,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549678241] [2020-11-28 03:07:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:53,830 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 03:07:53,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549678241] [2020-11-28 03:07:53,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:53,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:07:53,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675868824] [2020-11-28 03:07:53,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:07:53,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:53,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:07:53,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:53,833 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-28 03:07:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:53,843 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-28 03:07:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:07:53,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 03:07:53,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:53,846 INFO L225 Difference]: With dead ends: 144 [2020-11-28 03:07:53,846 INFO L226 Difference]: Without dead ends: 144 [2020-11-28 03:07:53,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-28 03:07:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-28 03:07:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 03:07:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-28 03:07:53,860 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-28 03:07:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:53,861 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-28 03:07:53,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:07:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-28 03:07:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:07:53,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:53,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:53,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:07:53,864 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1306895020, now seen corresponding path program 1 times [2020-11-28 03:07:53,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151980288] [2020-11-28 03:07:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:53,999 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 03:07:53,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151980288] [2020-11-28 03:07:54,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:54,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:54,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279000997] [2020-11-28 03:07:54,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:07:54,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:07:54,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:07:54,002 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-28 03:07:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:54,052 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-11-28 03:07:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:54,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:07:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:54,055 INFO L225 Difference]: With dead ends: 164 [2020-11-28 03:07:54,055 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 03:07:54,056 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 03:07:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 03:07:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-28 03:07:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-28 03:07:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-11-28 03:07:54,068 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-11-28 03:07:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:54,069 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-11-28 03:07:54,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:07:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-11-28 03:07:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:07:54,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:54,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:54,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:07:54,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1812224197, now seen corresponding path program 1 times [2020-11-28 03:07:54,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281534610] [2020-11-28 03:07:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,176 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 03:07:54,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281534610] [2020-11-28 03:07:54,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:54,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:07:54,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178990791] [2020-11-28 03:07:54,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:54,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:54,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:54,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:54,179 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-11-28 03:07:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:54,247 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-28 03:07:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:07:54,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:07:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:54,251 INFO L225 Difference]: With dead ends: 122 [2020-11-28 03:07:54,251 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:07:54,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:07:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:07:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-28 03:07:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:07:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-28 03:07:54,269 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-11-28 03:07:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:54,270 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-28 03:07:54,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-28 03:07:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:07:54,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:54,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:54,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:07:54,274 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash 111718158, now seen corresponding path program 1 times [2020-11-28 03:07:54,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370425405] [2020-11-28 03:07:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,340 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 03:07:54,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370425405] [2020-11-28 03:07:54,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:54,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:54,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588510455] [2020-11-28 03:07:54,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:07:54,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:54,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:07:54,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:54,342 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-11-28 03:07:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:54,364 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-11-28 03:07:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:07:54,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 03:07:54,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:54,366 INFO L225 Difference]: With dead ends: 115 [2020-11-28 03:07:54,366 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 03:07:54,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 03:07:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-28 03:07:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 03:07:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-28 03:07:54,385 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-11-28 03:07:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:54,386 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-28 03:07:54,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:07:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-28 03:07:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:07:54,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:54,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:54,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:07:54,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 567564355, now seen corresponding path program 1 times [2020-11-28 03:07:54,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615080351] [2020-11-28 03:07:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,502 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 03:07:54,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615080351] [2020-11-28 03:07:54,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:54,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:07:54,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454345703] [2020-11-28 03:07:54,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:07:54,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:07:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:07:54,504 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-11-28 03:07:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:54,590 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-28 03:07:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:07:54,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:07:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:54,591 INFO L225 Difference]: With dead ends: 92 [2020-11-28 03:07:54,591 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:07:54,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:07:54,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 03:07:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:07:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-28 03:07:54,594 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-28 03:07:54,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:54,594 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-28 03:07:54,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:07:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-28 03:07:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:07:54,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:54,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:54,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:07:54,595 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,595 INFO L82 PathProgramCache]: Analyzing trace with hash -170339707, now seen corresponding path program 1 times [2020-11-28 03:07:54,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404104389] [2020-11-28 03:07:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,676 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 03:07:54,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404104389] [2020-11-28 03:07:54,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:54,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:54,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895087475] [2020-11-28 03:07:54,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:07:54,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:07:54,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:54,678 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-11-28 03:07:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:54,685 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-28 03:07:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:07:54,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:07:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:54,686 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:07:54,686 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:07:54,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:07:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:07:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:07:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:07:54,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 03:07:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:54,688 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:07:54,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:07:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:07:54,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:07:54,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:07:54,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:07:54 BasicIcfg [2020-11-28 03:07:54,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:07:54,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:54,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:54,694 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:54,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:49" (3/4) ... [2020-11-28 03:07:54,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:07:54,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:07:54,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:07:54,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:07:54,715 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:07:54,715 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:07:54,716 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:07:54,718 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:07:54,798 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_25f18e2d-88e2-45f8-be15-73704513d1d5/bin/uautomizer/witness.graphml [2020-11-28 03:07:54,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:54,800 INFO L168 Benchmark]: Toolchain (without parser) took 7495.95 ms. Allocated memory was 75.5 MB in the beginning and 138.4 MB in the end (delta: 62.9 MB). Free memory was 41.9 MB in the beginning and 90.3 MB in the end (delta: -48.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:54,802 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:54,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.63 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.6 MB in the beginning and 48.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:54,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 92.3 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:54,804 INFO L168 Benchmark]: Boogie Preprocessor took 42.40 ms. Allocated memory is still 92.3 MB. Free memory was 47.1 MB in the beginning and 45.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:54,804 INFO L168 Benchmark]: RCFGBuilder took 808.09 ms. Allocated memory is still 92.3 MB. Free memory was 45.5 MB in the beginning and 57.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:54,805 INFO L168 Benchmark]: TraceAbstraction took 5646.73 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 57.3 MB in the beginning and 93.4 MB in the end (delta: -36.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:54,805 INFO L168 Benchmark]: Witness Printer took 105.03 ms. Allocated memory is still 138.4 MB. Free memory was 93.4 MB in the beginning and 90.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:54,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 792.63 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.6 MB in the beginning and 48.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 92.3 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.40 ms. Allocated memory is still 92.3 MB. Free memory was 47.1 MB in the beginning and 45.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 808.09 ms. Allocated memory is still 92.3 MB. Free memory was 45.5 MB in the beginning and 57.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5646.73 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 57.3 MB in the beginning and 93.4 MB in the end (delta: -36.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Witness Printer took 105.03 ms. Allocated memory is still 138.4 MB. Free memory was 93.4 MB in the beginning and 90.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 988 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3321 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 144 SDtfs, 121 SDslu, 167 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...