./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_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_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6963db7fce396e00371f494f6797e19a5cce06a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:54:54,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:54:54,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:54:54,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:54:54,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:54:54,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:54:54,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:54:54,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:54:54,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:54:54,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:54:54,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:54:54,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:54:54,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:54:54,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:54:54,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:54:54,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:54:54,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:54:54,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:54:54,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:54:54,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:54:54,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:54:54,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:54:54,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:54:54,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:54:54,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:54:54,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:54:54,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:54:54,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:54:54,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:54:54,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:54:54,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:54:54,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:54:54,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:54:54,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:54:54,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:54:54,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:54:54,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:54:54,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:54:54,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:54:54,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:54:54,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:54:54,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:54:54,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:54:54,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:54:54,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:54:54,177 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:54:54,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:54:54,178 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:54:54,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:54:54,179 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:54:54,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:54:54,180 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:54:54,180 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:54:54,180 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:54:54,181 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:54:54,181 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:54:54,182 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:54:54,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:54:54,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:54:54,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:54:54,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:54:54,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:54:54,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:54:54,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:54:54,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:54:54,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:54:54,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:54:54,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:54:54,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:54:54,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:54:54,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:54:54,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:54:54,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:54:54,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:54:54,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:54:54,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:54:54,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:54:54,188 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:54:54,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:54:54,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:54:54,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:54:54,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:54:54,190 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6963db7fce396e00371f494f6797e19a5cce06a [2020-11-22 12:54:54,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:54:54,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:54:54,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:54:54,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:54:54,571 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:54:54,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2020-11-22 12:54:54,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/data/0846d07ba/2355445446134c01a3404fa368c70460/FLAGeb21c612d [2020-11-22 12:54:55,260 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:54:55,260 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2020-11-22 12:54:55,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/data/0846d07ba/2355445446134c01a3404fa368c70460/FLAGeb21c612d [2020-11-22 12:54:55,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/data/0846d07ba/2355445446134c01a3404fa368c70460 [2020-11-22 12:54:55,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:54:55,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:54:55,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:55,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:54:55,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:54:55,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:55" (1/1) ... [2020-11-22 12:54:55,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438745d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:55, skipping insertion in model container [2020-11-22 12:54:55,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:55" (1/1) ... [2020-11-22 12:54:55,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:54:55,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:54:56,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:56,073 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:54:56,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:56,233 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:54:56,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56 WrapperNode [2020-11-22 12:54:56,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:56,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:56,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:54:56,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:54:56,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:56,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:54:56,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:54:56,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:54:56,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... [2020-11-22 12:54:56,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:54:56,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:54:56,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:54:56,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:54:56,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/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 [2020-11-22 12:54:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:54:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:54:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:54:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:54:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:54:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:54:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:54:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:54:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:54:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:54:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-22 12:54:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-22 12:54:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:54:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:54:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:54:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:54:56,391 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:54:56,878 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:54:56,879 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:54:56,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:56 BoogieIcfgContainer [2020-11-22 12:54:56,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:54:56,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:54:56,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:54:56,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:54:56,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:54:55" (1/3) ... [2020-11-22 12:54:56,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a73bbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:56, skipping insertion in model container [2020-11-22 12:54:56,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:56" (2/3) ... [2020-11-22 12:54:56,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a73bbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:56, skipping insertion in model container [2020-11-22 12:54:56,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:56" (3/3) ... [2020-11-22 12:54:56,891 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-11-22 12:54:56,923 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:54:56,923 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:54:56,929 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:54:56,930 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:54:56,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,968 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,968 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,968 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,968 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,970 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,970 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,970 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,970 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,971 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,973 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,973 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,974 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,979 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,979 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,979 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,979 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:56,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:57,000 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:57,000 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:57,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:54:57,002 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:54:57,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-22 12:54:57,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:54:57,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:54:57,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:54:57,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:54:57,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:54:57,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:54:57,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:54:57,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:54:57,057 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:54:57,058 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-22 12:54:57,061 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-22 12:54:57,062 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-11-22 12:54:57,111 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-11-22 12:54:57,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:54:57,119 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-22 12:54:57,124 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-22 12:54:59,040 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-22 12:54:59,978 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-22 12:55:00,180 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-11-22 12:55:00,318 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-11-22 12:55:00,318 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-11-22 12:55:00,323 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-11-22 12:55:00,381 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-11-22 12:55:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-11-22 12:55:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:55:00,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:00,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:00,394 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-11-22 12:55:00,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081816849] [2020-11-22 12:55:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:00,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081816849] [2020-11-22 12:55:00,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:00,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:55:00,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253216531] [2020-11-22 12:55:00,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:00,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:00,654 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-11-22 12:55:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:00,754 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-22 12:55:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:00,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 12:55:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:00,787 INFO L225 Difference]: With dead ends: 670 [2020-11-22 12:55:00,789 INFO L226 Difference]: Without dead ends: 526 [2020-11-22 12:55:00,791 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 [2020-11-22 12:55:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-22 12:55:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-22 12:55:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-11-22 12:55:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-22 12:55:00,915 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-22 12:55:00,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:00,916 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-22 12:55:00,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-22 12:55:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:55:00,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:00,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:00,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:55:00,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1488897790, now seen corresponding path program 1 times [2020-11-22 12:55:00,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:00,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687105199] [2020-11-22 12:55:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:01,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687105199] [2020-11-22 12:55:01,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:01,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:01,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448939184] [2020-11-22 12:55:01,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:01,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:01,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:01,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:01,058 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-11-22 12:55:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:01,109 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-11-22 12:55:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:01,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:55:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:01,121 INFO L225 Difference]: With dead ends: 748 [2020-11-22 12:55:01,121 INFO L226 Difference]: Without dead ends: 460 [2020-11-22 12:55:01,122 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 [2020-11-22 12:55:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-11-22 12:55:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-11-22 12:55:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-11-22 12:55:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-11-22 12:55:01,162 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 11 [2020-11-22 12:55:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:01,163 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-11-22 12:55:01,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-11-22 12:55:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:55:01,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:01,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:01,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:55:01,167 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:01,168 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 1 times [2020-11-22 12:55:01,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:01,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25129381] [2020-11-22 12:55:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:01,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25129381] [2020-11-22 12:55:01,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:01,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:55:01,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712814815] [2020-11-22 12:55:01,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:01,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:01,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:01,302 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-11-22 12:55:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:01,316 INFO L93 Difference]: Finished difference Result 442 states and 1398 transitions. [2020-11-22 12:55:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:01,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-22 12:55:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:01,322 INFO L225 Difference]: With dead ends: 442 [2020-11-22 12:55:01,322 INFO L226 Difference]: Without dead ends: 442 [2020-11-22 12:55:01,323 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 [2020-11-22 12:55:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-11-22 12:55:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-11-22 12:55:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-11-22 12:55:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1398 transitions. [2020-11-22 12:55:01,347 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1398 transitions. Word has length 12 [2020-11-22 12:55:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:01,347 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1398 transitions. [2020-11-22 12:55:01,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1398 transitions. [2020-11-22 12:55:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:55:01,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:01,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:01,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:55:01,353 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash -912860165, now seen corresponding path program 1 times [2020-11-22 12:55:01,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:01,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564408035] [2020-11-22 12:55:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:01,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564408035] [2020-11-22 12:55:01,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:01,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:01,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660690889] [2020-11-22 12:55:01,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:01,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:01,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:01,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:01,465 INFO L87 Difference]: Start difference. First operand 442 states and 1398 transitions. Second operand 4 states. [2020-11-22 12:55:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:01,519 INFO L93 Difference]: Finished difference Result 788 states and 2333 transitions. [2020-11-22 12:55:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:01,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 12:55:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:01,524 INFO L225 Difference]: With dead ends: 788 [2020-11-22 12:55:01,525 INFO L226 Difference]: Without dead ends: 412 [2020-11-22 12:55:01,527 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 [2020-11-22 12:55:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-22 12:55:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-11-22 12:55:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-11-22 12:55:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1087 transitions. [2020-11-22 12:55:01,550 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1087 transitions. Word has length 13 [2020-11-22 12:55:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:01,550 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1087 transitions. [2020-11-22 12:55:01,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1087 transitions. [2020-11-22 12:55:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:55:01,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:01,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:01,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:55:01,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1787336884, now seen corresponding path program 1 times [2020-11-22 12:55:01,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:01,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068050873] [2020-11-22 12:55:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:01,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068050873] [2020-11-22 12:55:01,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:01,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:01,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938695475] [2020-11-22 12:55:01,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:01,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:01,678 INFO L87 Difference]: Start difference. First operand 376 states and 1087 transitions. Second operand 4 states. [2020-11-22 12:55:01,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:01,720 INFO L93 Difference]: Finished difference Result 494 states and 1370 transitions. [2020-11-22 12:55:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:01,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 12:55:01,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:01,723 INFO L225 Difference]: With dead ends: 494 [2020-11-22 12:55:01,724 INFO L226 Difference]: Without dead ends: 254 [2020-11-22 12:55:01,724 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 [2020-11-22 12:55:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-22 12:55:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-11-22 12:55:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-22 12:55:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 707 transitions. [2020-11-22 12:55:01,734 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 707 transitions. Word has length 13 [2020-11-22 12:55:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:01,735 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 707 transitions. [2020-11-22 12:55:01,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 707 transitions. [2020-11-22 12:55:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:55:01,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:01,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:01,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:55:01,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 1 times [2020-11-22 12:55:01,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:01,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195367491] [2020-11-22 12:55:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:01,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195367491] [2020-11-22 12:55:01,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:01,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:01,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759136053] [2020-11-22 12:55:01,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:01,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:01,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:01,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:01,853 INFO L87 Difference]: Start difference. First operand 254 states and 707 transitions. Second operand 4 states. [2020-11-22 12:55:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:01,934 INFO L93 Difference]: Finished difference Result 315 states and 812 transitions. [2020-11-22 12:55:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:01,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-22 12:55:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:01,936 INFO L225 Difference]: With dead ends: 315 [2020-11-22 12:55:01,936 INFO L226 Difference]: Without dead ends: 230 [2020-11-22 12:55:01,936 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 [2020-11-22 12:55:01,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-22 12:55:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-22 12:55:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-22 12:55:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 601 transitions. [2020-11-22 12:55:01,948 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 601 transitions. Word has length 14 [2020-11-22 12:55:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:01,949 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 601 transitions. [2020-11-22 12:55:01,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 601 transitions. [2020-11-22 12:55:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:55:01,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:01,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:01,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:55:01,951 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:01,951 INFO L82 PathProgramCache]: Analyzing trace with hash 243922642, now seen corresponding path program 1 times [2020-11-22 12:55:01,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:01,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534113558] [2020-11-22 12:55:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:02,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534113558] [2020-11-22 12:55:02,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:02,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:02,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076345615] [2020-11-22 12:55:02,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:55:02,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:02,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:55:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:02,055 INFO L87 Difference]: Start difference. First operand 230 states and 601 transitions. Second operand 5 states. [2020-11-22 12:55:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:02,148 INFO L93 Difference]: Finished difference Result 246 states and 585 transitions. [2020-11-22 12:55:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:55:02,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-22 12:55:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:02,150 INFO L225 Difference]: With dead ends: 246 [2020-11-22 12:55:02,150 INFO L226 Difference]: Without dead ends: 178 [2020-11-22 12:55:02,151 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 [2020-11-22 12:55:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-22 12:55:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-22 12:55:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-22 12:55:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 414 transitions. [2020-11-22 12:55:02,158 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 414 transitions. Word has length 15 [2020-11-22 12:55:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:02,158 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 414 transitions. [2020-11-22 12:55:02,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:55:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 414 transitions. [2020-11-22 12:55:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:55:02,159 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:02,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:02,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:55:02,159 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-11-22 12:55:02,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:02,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999457217] [2020-11-22 12:55:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:02,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999457217] [2020-11-22 12:55:02,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:02,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:02,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458034206] [2020-11-22 12:55:02,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:55:02,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:02,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:55:02,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:02,280 INFO L87 Difference]: Start difference. First operand 178 states and 414 transitions. Second operand 6 states. [2020-11-22 12:55:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:02,345 INFO L93 Difference]: Finished difference Result 171 states and 376 transitions. [2020-11-22 12:55:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:55:02,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-22 12:55:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:02,346 INFO L225 Difference]: With dead ends: 171 [2020-11-22 12:55:02,347 INFO L226 Difference]: Without dead ends: 137 [2020-11-22 12:55:02,347 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 [2020-11-22 12:55:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-22 12:55:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-22 12:55:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-22 12:55:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-11-22 12:55:02,352 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 16 [2020-11-22 12:55:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:02,352 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-11-22 12:55:02,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:55:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-11-22 12:55:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:55:02,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:02,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:02,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:55:02,353 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 1 times [2020-11-22 12:55:02,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:02,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796603915] [2020-11-22 12:55:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:02,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796603915] [2020-11-22 12:55:02,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:02,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:55:02,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723432602] [2020-11-22 12:55:02,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:55:02,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:02,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:55:02,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:55:02,456 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 7 states. [2020-11-22 12:55:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:02,538 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-11-22 12:55:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:55:02,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-22 12:55:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:02,539 INFO L225 Difference]: With dead ends: 132 [2020-11-22 12:55:02,539 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 12:55:02,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:55:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 12:55:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-22 12:55:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-22 12:55:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-11-22 12:55:02,542 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-11-22 12:55:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:02,542 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-11-22 12:55:02,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:55:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-11-22 12:55:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-22 12:55:02,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:02,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:02,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:55:02,543 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-11-22 12:55:02,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:02,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408190274] [2020-11-22 12:55:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:02,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408190274] [2020-11-22 12:55:02,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:02,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:02,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190554824] [2020-11-22 12:55:02,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:02,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:02,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:02,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:02,578 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-11-22 12:55:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:02,584 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-11-22 12:55:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:02,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-22 12:55:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:02,585 INFO L225 Difference]: With dead ends: 50 [2020-11-22 12:55:02,585 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:55:02,585 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 [2020-11-22 12:55:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:55:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:55:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:55:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:55:02,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-22 12:55:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:02,586 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:55:02,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:55:02,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:55:02,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:55:02,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:55:02 BasicIcfg [2020-11-22 12:55:02,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:55:02,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:55:02,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:55:02,590 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:55:02,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:56" (3/4) ... [2020-11-22 12:55:02,593 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:55:02,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:55:02,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:55:02,602 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:55:02,602 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-11-22 12:55:02,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-11-22 12:55:02,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:55:02,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:02,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:02,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9aba3745-99f9-4983-b8b0-b9189cc9f01a/bin/utaipan/witness.graphml [2020-11-22 12:55:02,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:55:02,666 INFO L168 Benchmark]: Toolchain (without parser) took 7130.14 ms. Allocated memory was 113.2 MB in the beginning and 184.5 MB in the end (delta: 71.3 MB). Free memory was 76.8 MB in the beginning and 126.2 MB in the end (delta: -49.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:02,667 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 113.2 MB. Free memory was 83.9 MB in the beginning and 83.8 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:02,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.89 ms. Allocated memory is still 113.2 MB. Free memory was 76.6 MB in the beginning and 68.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:02,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.73 ms. Allocated memory is still 113.2 MB. Free memory was 67.6 MB in the beginning and 66.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:02,668 INFO L168 Benchmark]: Boogie Preprocessor took 31.66 ms. Allocated memory is still 113.2 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:02,668 INFO L168 Benchmark]: RCFGBuilder took 564.86 ms. Allocated memory is still 113.2 MB. Free memory was 64.5 MB in the beginning and 41.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:02,669 INFO L168 Benchmark]: TraceAbstraction took 5705.75 ms. Allocated memory was 113.2 MB in the beginning and 184.5 MB in the end (delta: 71.3 MB). Free memory was 40.9 MB in the beginning and 129.3 MB in the end (delta: -88.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:02,669 INFO L168 Benchmark]: Witness Printer took 75.09 ms. Allocated memory is still 184.5 MB. Free memory was 129.3 MB in the beginning and 126.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:02,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 113.2 MB. Free memory was 83.9 MB in the beginning and 83.8 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.89 ms. Allocated memory is still 113.2 MB. Free memory was 76.6 MB in the beginning and 68.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.73 ms. Allocated memory is still 113.2 MB. Free memory was 67.6 MB in the beginning and 66.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.66 ms. Allocated memory is still 113.2 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 564.86 ms. Allocated memory is still 113.2 MB. Free memory was 64.5 MB in the beginning and 41.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5705.75 ms. Allocated memory was 113.2 MB in the beginning and 184.5 MB in the end (delta: 71.3 MB). Free memory was 40.9 MB in the beginning and 129.3 MB in the end (delta: -88.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 75.09 ms. Allocated memory is still 184.5 MB. Free memory was 129.3 MB in the beginning and 126.2 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 1489 VarBasedMoverChecksPositive, 67 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 54 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 106 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 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 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 222 SDtfs, 227 SDslu, 318 SDs, 0 SdLazy, 183 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 5404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...