./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt --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 e9b1c96eed0367583bf25a0e47ad0463a90fc1bd .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:10:19,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:10:19,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:10:19,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:10:19,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:10:19,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:10:19,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:10:19,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:10:19,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:10:19,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:10:19,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:10:19,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:10:19,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:10:19,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:10:19,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:10:19,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:10:19,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:10:19,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:10:19,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:10:19,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:10:19,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:10:19,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:10:19,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:10:19,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:10:19,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:10:19,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:10:19,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:10:19,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:10:19,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:10:19,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:10:19,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:10:19,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:10:19,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:10:19,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:10:19,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:10:19,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:10:19,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:10:19,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:10:19,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:10:19,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:10:19,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:10:19,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:10:19,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:10:19,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:10:19,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:10:19,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:10:19,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:10:19,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:10:19,272 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:10:19,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:10:19,272 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:10:19,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:10:19,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:10:19,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:10:19,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:10:19,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:10:19,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:10:19,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:10:19,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:10:19,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:10:19,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:10:19,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:10:19,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:10:19,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:10:19,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:10:19,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:10:19,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:10:19,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:10:19,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:10:19,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:10:19,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:10:19,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:10:19,285 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_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9b1c96eed0367583bf25a0e47ad0463a90fc1bd [2021-10-13 00:10:19,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:10:19,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:10:19,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:10:19,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:10:19,663 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:10:19,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2021-10-13 00:10:19,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/data/82fd66c4d/88b00709c66a4e3a88696fb7e4fac0c3/FLAGabf7d7bb5 [2021-10-13 00:10:20,531 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:10:20,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2021-10-13 00:10:20,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/data/82fd66c4d/88b00709c66a4e3a88696fb7e4fac0c3/FLAGabf7d7bb5 [2021-10-13 00:10:20,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/data/82fd66c4d/88b00709c66a4e3a88696fb7e4fac0c3 [2021-10-13 00:10:20,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:10:20,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:10:20,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:10:20,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:10:20,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:10:20,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:20" (1/1) ... [2021-10-13 00:10:20,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44755f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:20, skipping insertion in model container [2021-10-13 00:10:20,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:20" (1/1) ... [2021-10-13 00:10:20,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:10:20,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:10:21,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i[949,962] [2021-10-13 00:10:21,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:10:21,331 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:10:21,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i[949,962] [2021-10-13 00:10:21,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:10:21,453 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:10:21,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21 WrapperNode [2021-10-13 00:10:21,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:10:21,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:10:21,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:10:21,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:10:21,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:10:21,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:10:21,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:10:21,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:10:21,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:10:21,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:10:21,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:10:21,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:10:21,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (1/1) ... [2021-10-13 00:10:21,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:10:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:21,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:10:21,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:10:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:10:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 00:10:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:10:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:10:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 00:10:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 00:10:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 00:10:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 00:10:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 00:10:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 00:10:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 00:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:10:21,738 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 00:10:22,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:10:22,178 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:10:22,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:22 BoogieIcfgContainer [2021-10-13 00:10:22,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:10:22,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:10:22,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:10:22,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:10:22,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:10:20" (1/3) ... [2021-10-13 00:10:22,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb1bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:22, skipping insertion in model container [2021-10-13 00:10:22,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:21" (2/3) ... [2021-10-13 00:10:22,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb1bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:22, skipping insertion in model container [2021-10-13 00:10:22,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:22" (3/3) ... [2021-10-13 00:10:22,192 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2021-10-13 00:10:22,199 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 00:10:22,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:10:22,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:10:22,199 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 00:10:22,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,265 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,265 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,275 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,279 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,279 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:10:22,307 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 00:10:22,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:10:22,381 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:10:22,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 00:10:22,403 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 00:10:22,431 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-13 00:10:22,436 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-13 00:10:22,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-13 00:10:22,555 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-13 00:10:22,556 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 00:10:22,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 00:10:22,565 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 00:10:26,378 INFO L131 LiptonReduction]: Checked pairs total: 2757 [2021-10-13 00:10:26,379 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 00:10:26,390 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-13 00:10:26,426 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:10:26,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:26,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:26,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1301167225, now seen corresponding path program 1 times [2021-10-13 00:10:26,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:26,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515838575] [2021-10-13 00:10:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:26,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:26,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:26,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515838575] [2021-10-13 00:10:26,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515838575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:26,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:26,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:10:26,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159025962] [2021-10-13 00:10:26,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:26,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:26,894 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:26,965 INFO L93 Difference]: Finished difference Result 347 states and 908 transitions. [2021-10-13 00:10:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:26,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:10:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:27,006 INFO L225 Difference]: With dead ends: 347 [2021-10-13 00:10:27,006 INFO L226 Difference]: Without dead ends: 315 [2021-10-13 00:10:27,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-10-13 00:10:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2021-10-13 00:10:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.6487455197132617) internal successors, (739), 279 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2021-10-13 00:10:27,132 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2021-10-13 00:10:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:27,133 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2021-10-13 00:10:27,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2021-10-13 00:10:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:10:27,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:27,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:27,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:10:27,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:27,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2057201507, now seen corresponding path program 1 times [2021-10-13 00:10:27,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:27,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158386111] [2021-10-13 00:10:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:27,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:27,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:27,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158386111] [2021-10-13 00:10:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158386111] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:27,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:27,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:10:27,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678704300] [2021-10-13 00:10:27,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:10:27,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:10:27,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:27,351 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:27,380 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2021-10-13 00:10:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:10:27,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:10:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:27,385 INFO L225 Difference]: With dead ends: 293 [2021-10-13 00:10:27,386 INFO L226 Difference]: Without dead ends: 293 [2021-10-13 00:10:27,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-13 00:10:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2021-10-13 00:10:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.62109375) internal successors, (671), 256 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2021-10-13 00:10:27,413 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2021-10-13 00:10:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:27,413 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2021-10-13 00:10:27,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2021-10-13 00:10:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:10:27,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:27,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:27,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:10:27,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:27,419 INFO L82 PathProgramCache]: Analyzing trace with hash -826648700, now seen corresponding path program 1 times [2021-10-13 00:10:27,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:27,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544714489] [2021-10-13 00:10:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:27,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:27,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:27,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544714489] [2021-10-13 00:10:27,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544714489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:27,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:27,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:10:27,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854186322] [2021-10-13 00:10:27,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:27,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:27,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:27,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:27,555 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:27,564 INFO L93 Difference]: Finished difference Result 246 states and 636 transitions. [2021-10-13 00:10:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:10:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:27,568 INFO L225 Difference]: With dead ends: 246 [2021-10-13 00:10:27,569 INFO L226 Difference]: Without dead ends: 246 [2021-10-13 00:10:27,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-13 00:10:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 226. [2021-10-13 00:10:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.608888888888889) internal successors, (587), 225 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 587 transitions. [2021-10-13 00:10:27,591 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 587 transitions. Word has length 10 [2021-10-13 00:10:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:27,592 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 587 transitions. [2021-10-13 00:10:27,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 587 transitions. [2021-10-13 00:10:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:10:27,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:27,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:27,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:10:27,595 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash -763710268, now seen corresponding path program 1 times [2021-10-13 00:10:27,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:27,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814545515] [2021-10-13 00:10:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:27,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:27,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:27,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814545515] [2021-10-13 00:10:27,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814545515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:27,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:27,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:10:27,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034092939] [2021-10-13 00:10:27,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:10:27,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:10:27,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:27,715 INFO L87 Difference]: Start difference. First operand 226 states and 587 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:27,755 INFO L93 Difference]: Finished difference Result 258 states and 648 transitions. [2021-10-13 00:10:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:10:27,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:10:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:27,763 INFO L225 Difference]: With dead ends: 258 [2021-10-13 00:10:27,766 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 00:10:27,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 00:10:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 202. [2021-10-13 00:10:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.557213930348259) internal successors, (514), 201 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 514 transitions. [2021-10-13 00:10:27,806 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 514 transitions. Word has length 10 [2021-10-13 00:10:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:27,807 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 514 transitions. [2021-10-13 00:10:27,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 514 transitions. [2021-10-13 00:10:27,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:10:27,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:27,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:27,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:10:27,810 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:27,811 INFO L82 PathProgramCache]: Analyzing trace with hash 143692478, now seen corresponding path program 1 times [2021-10-13 00:10:27,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:27,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18227211] [2021-10-13 00:10:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:27,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:27,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:27,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18227211] [2021-10-13 00:10:27,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18227211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:27,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:27,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:10:27,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715745908] [2021-10-13 00:10:27,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:27,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:27,929 INFO L87 Difference]: Start difference. First operand 202 states and 514 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:27,938 INFO L93 Difference]: Finished difference Result 200 states and 507 transitions. [2021-10-13 00:10:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:10:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:27,941 INFO L225 Difference]: With dead ends: 200 [2021-10-13 00:10:27,941 INFO L226 Difference]: Without dead ends: 200 [2021-10-13 00:10:27,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-13 00:10:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-10-13 00:10:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.5477386934673367) internal successors, (507), 199 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2021-10-13 00:10:27,952 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2021-10-13 00:10:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:27,953 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2021-10-13 00:10:27,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2021-10-13 00:10:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:10:27,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:27,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:27,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:10:27,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2051009510, now seen corresponding path program 1 times [2021-10-13 00:10:27,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:27,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511731705] [2021-10-13 00:10:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:27,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511731705] [2021-10-13 00:10:28,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511731705] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:28,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:28,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:10:28,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459716921] [2021-10-13 00:10:28,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:10:28,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:10:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:28,141 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,189 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2021-10-13 00:10:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:10:28,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:10:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,191 INFO L225 Difference]: With dead ends: 235 [2021-10-13 00:10:28,192 INFO L226 Difference]: Without dead ends: 167 [2021-10-13 00:10:28,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-13 00:10:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-10-13 00:10:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.283132530120482) internal successors, (379), 166 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 379 transitions. [2021-10-13 00:10:28,218 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 379 transitions. Word has length 12 [2021-10-13 00:10:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,218 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 379 transitions. [2021-10-13 00:10:28,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 379 transitions. [2021-10-13 00:10:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:10:28,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:28,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:10:28,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash 753016455, now seen corresponding path program 1 times [2021-10-13 00:10:28,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282755101] [2021-10-13 00:10:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282755101] [2021-10-13 00:10:28,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282755101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:28,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:28,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:10:28,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546726079] [2021-10-13 00:10:28,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:28,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:28,379 INFO L87 Difference]: Start difference. First operand 167 states and 379 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,423 INFO L93 Difference]: Finished difference Result 168 states and 357 transitions. [2021-10-13 00:10:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:10:28,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 00:10:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,425 INFO L225 Difference]: With dead ends: 168 [2021-10-13 00:10:28,425 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 00:10:28,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 00:10:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-13 00:10:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.096) internal successors, (262), 125 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 262 transitions. [2021-10-13 00:10:28,433 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 262 transitions. Word has length 13 [2021-10-13 00:10:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,434 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 262 transitions. [2021-10-13 00:10:28,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 262 transitions. [2021-10-13 00:10:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:10:28,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:28,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:10:28,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 732351805, now seen corresponding path program 1 times [2021-10-13 00:10:28,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668702264] [2021-10-13 00:10:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668702264] [2021-10-13 00:10:28,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668702264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:28,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:28,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:10:28,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427866649] [2021-10-13 00:10:28,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:28,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:28,518 INFO L87 Difference]: Start difference. First operand 126 states and 262 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,555 INFO L93 Difference]: Finished difference Result 193 states and 382 transitions. [2021-10-13 00:10:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:10:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:10:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,558 INFO L225 Difference]: With dead ends: 193 [2021-10-13 00:10:28,558 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:10:28,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:10:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2021-10-13 00:10:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.064) internal successors, (258), 125 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 258 transitions. [2021-10-13 00:10:28,566 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 258 transitions. Word has length 14 [2021-10-13 00:10:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,566 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 258 transitions. [2021-10-13 00:10:28,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 258 transitions. [2021-10-13 00:10:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:10:28,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:28,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:10:28,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:28,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,569 INFO L82 PathProgramCache]: Analyzing trace with hash 62296389, now seen corresponding path program 2 times [2021-10-13 00:10:28,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188857808] [2021-10-13 00:10:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188857808] [2021-10-13 00:10:28,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188857808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:28,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:28,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:10:28,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859785591] [2021-10-13 00:10:28,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:10:28,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:10:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:28,646 INFO L87 Difference]: Start difference. First operand 126 states and 258 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,670 INFO L93 Difference]: Finished difference Result 181 states and 358 transitions. [2021-10-13 00:10:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:10:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:10:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,672 INFO L225 Difference]: With dead ends: 181 [2021-10-13 00:10:28,673 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 00:10:28,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 00:10:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 120. [2021-10-13 00:10:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0168067226890756) internal successors, (240), 119 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 240 transitions. [2021-10-13 00:10:28,680 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 240 transitions. Word has length 14 [2021-10-13 00:10:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,680 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 240 transitions. [2021-10-13 00:10:28,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 240 transitions. [2021-10-13 00:10:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:10:28,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,682 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:28,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:10:28,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1609120527, now seen corresponding path program 1 times [2021-10-13 00:10:28,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973144704] [2021-10-13 00:10:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973144704] [2021-10-13 00:10:28,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973144704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:28,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:28,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:10:28,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950329939] [2021-10-13 00:10:28,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:28,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:28,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:28,753 INFO L87 Difference]: Start difference. First operand 120 states and 240 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,820 INFO L93 Difference]: Finished difference Result 155 states and 300 transitions. [2021-10-13 00:10:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:10:28,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:10:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,823 INFO L225 Difference]: With dead ends: 155 [2021-10-13 00:10:28,823 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 00:10:28,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:10:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 00:10:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2021-10-13 00:10:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.9292035398230087) internal successors, (218), 113 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 218 transitions. [2021-10-13 00:10:28,829 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 218 transitions. Word has length 15 [2021-10-13 00:10:28,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,830 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 218 transitions. [2021-10-13 00:10:28,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 218 transitions. [2021-10-13 00:10:28,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:10:28,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:28,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:10:28,832 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,833 INFO L82 PathProgramCache]: Analyzing trace with hash 492831695, now seen corresponding path program 2 times [2021-10-13 00:10:28,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950753061] [2021-10-13 00:10:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950753061] [2021-10-13 00:10:28,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950753061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:28,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:28,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:10:28,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100344686] [2021-10-13 00:10:28,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:28,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:28,940 INFO L87 Difference]: Start difference. First operand 114 states and 218 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,975 INFO L93 Difference]: Finished difference Result 167 states and 309 transitions. [2021-10-13 00:10:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:10:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:10:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,977 INFO L225 Difference]: With dead ends: 167 [2021-10-13 00:10:28,977 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 00:10:28,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 00:10:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2021-10-13 00:10:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.853211009174312) internal successors, (202), 109 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 202 transitions. [2021-10-13 00:10:28,983 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 202 transitions. Word has length 15 [2021-10-13 00:10:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,987 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 202 transitions. [2021-10-13 00:10:28,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 202 transitions. [2021-10-13 00:10:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:10:28,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,989 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:28,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:10:28,989 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,990 INFO L82 PathProgramCache]: Analyzing trace with hash -94627425, now seen corresponding path program 3 times [2021-10-13 00:10:28,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854025979] [2021-10-13 00:10:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:29,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:29,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854025979] [2021-10-13 00:10:29,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854025979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:29,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:29,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:10:29,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792095193] [2021-10-13 00:10:29,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:10:29,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:10:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:29,131 INFO L87 Difference]: Start difference. First operand 110 states and 202 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:29,178 INFO L93 Difference]: Finished difference Result 106 states and 192 transitions. [2021-10-13 00:10:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:10:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:10:29,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:29,179 INFO L225 Difference]: With dead ends: 106 [2021-10-13 00:10:29,179 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:10:29,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:10:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:10:29,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 00:10:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-13 00:10:29,182 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 15 [2021-10-13 00:10:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:29,182 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-13 00:10:29,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-10-13 00:10:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:10:29,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:29,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:29,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:10:29,183 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:10:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:29,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1382968819, now seen corresponding path program 1 times [2021-10-13 00:10:29,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:29,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501170270] [2021-10-13 00:10:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:29,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:29,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:29,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501170270] [2021-10-13 00:10:29,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501170270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:29,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:29,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:10:29,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633123997] [2021-10-13 00:10:29,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:29,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:29,251 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:29,265 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-10-13 00:10:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:10:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:10:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:29,266 INFO L225 Difference]: With dead ends: 29 [2021-10-13 00:10:29,266 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:10:29,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:29,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:10:29,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:10:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:10:29,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 00:10:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:29,268 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:10:29,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:10:29,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:10:29,271 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:10:29,272 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 00:10:29,272 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 00:10:29,272 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 00:10:29,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:10:29,277 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 00:10:29,277 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:10:29,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:10:29 BasicIcfg [2021-10-13 00:10:29,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:10:29,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:10:29,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:10:29,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:10:29,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:22" (3/4) ... [2021-10-13 00:10:29,284 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:10:29,292 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 00:10:29,292 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 00:10:29,292 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 00:10:29,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 00:10:29,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:10:29,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:10:29,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:10:29,337 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:10:29,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:10:29,339 INFO L168 Benchmark]: Toolchain (without parser) took 8597.97 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 65.7 MB in the beginning and 112.0 MB in the end (delta: -46.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:29,339 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 107.0 MB. Free memory is still 83.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:10:29,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.52 ms. Allocated memory is still 107.0 MB. Free memory was 65.5 MB in the beginning and 72.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:29,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.54 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 70.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:29,341 INFO L168 Benchmark]: Boogie Preprocessor took 69.48 ms. Allocated memory is still 107.0 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:29,341 INFO L168 Benchmark]: RCFGBuilder took 554.64 ms. Allocated memory is still 107.0 MB. Free memory was 69.0 MB in the beginning and 57.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:29,342 INFO L168 Benchmark]: TraceAbstraction took 7096.64 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 56.8 MB in the beginning and 115.2 MB in the end (delta: -58.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:10:29,342 INFO L168 Benchmark]: Witness Printer took 57.17 ms. Allocated memory is still 157.3 MB. Free memory was 115.2 MB in the beginning and 112.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:29,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 107.0 MB. Free memory is still 83.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 712.52 ms. Allocated memory is still 107.0 MB. Free memory was 65.5 MB in the beginning and 72.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.54 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 70.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.48 ms. Allocated memory is still 107.0 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 554.64 ms. Allocated memory is still 107.0 MB. Free memory was 69.0 MB in the beginning and 57.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7096.64 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 56.8 MB in the beginning and 115.2 MB in the end (delta: -58.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.17 ms. Allocated memory is still 157.3 MB. Free memory was 115.2 MB in the beginning and 112.0 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 Lipton Reduction Statistics: ReductionTime: 3943.3ms, 91 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2757 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1458, positive: 1362, positive conditional: 0, positive unconditional: 1362, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 981, positive: 934, positive conditional: 0, positive unconditional: 934, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 981, positive: 920, positive conditional: 0, positive unconditional: 920, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 212, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 156, negative conditional: 0, negative unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1458, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6905.9ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 37.3ms, AutomataDifference: 615.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4044.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 270 SDtfs, 236 SDslu, 320 SDs, 0 SdLazy, 170 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 205.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 230.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=1, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 262.7ms AutomataMinimizationTime, 13 MinimizatonAttempts, 224 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.2ms SsaConstructionTime, 392.7ms SatisfiabilityAnalysisTime, 1139.5ms InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:10:29,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab8d0391-b302-4bdb-8043-c47fdb1e2078/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...