./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_tso.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_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/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_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/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_ed947fcc-a337-4b18-929d-cb187ea6c5e6/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 37f367aa306d4413b86571ec4edcd77d82ad4344 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:52:38,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:52:38,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:52:38,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:52:38,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:52:38,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:52:38,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:52:38,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:52:38,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:52:38,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:52:38,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:52:38,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:52:38,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:52:38,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:52:38,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:52:38,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:52:38,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:52:38,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:52:38,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:52:38,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:52:38,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:52:38,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:52:38,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:52:38,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:52:38,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:52:38,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:52:38,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:52:38,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:52:38,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:52:38,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:52:38,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:52:38,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:52:38,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:52:38,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:52:38,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:52:38,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:52:38,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:52:38,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:52:38,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:52:38,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:52:38,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:52:38,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:52:38,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:52:38,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:52:38,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:52:38,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:52:38,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:52:38,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:52:38,945 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:52:38,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:52:38,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:52:38,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:52:38,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:52:38,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:52:38,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:52:38,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:52:38,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:52:38,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:52:38,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:52:38,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:52:38,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:52:38,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:52:38,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:52:38,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:52:38,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:52:38,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:52:38,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:52:38,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:52:38,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:52:38,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:52:38,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:52:38,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:52:38,961 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_ed947fcc-a337-4b18-929d-cb187ea6c5e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f367aa306d4413b86571ec4edcd77d82ad4344 [2021-10-13 00:52:39,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:52:39,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:52:39,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:52:39,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:52:39,395 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:52:39,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i [2021-10-13 00:52:39,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/data/3e0928454/d43b4c83cc004e15923c3248afb15504/FLAG7e13ecf6f [2021-10-13 00:52:40,124 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:52:40,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i [2021-10-13 00:52:40,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/data/3e0928454/d43b4c83cc004e15923c3248afb15504/FLAG7e13ecf6f [2021-10-13 00:52:40,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/data/3e0928454/d43b4c83cc004e15923c3248afb15504 [2021-10-13 00:52:40,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:52:40,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:52:40,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:52:40,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:52:40,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:52:40,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:52:40" (1/1) ... [2021-10-13 00:52:40,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74568922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:40, skipping insertion in model container [2021-10-13 00:52:40,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:52:40" (1/1) ... [2021-10-13 00:52:40,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:52:40,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:52:40,742 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_ed947fcc-a337-4b18-929d-cb187ea6c5e6/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i[949,962] [2021-10-13 00:52:41,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:52:41,095 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:52:41,114 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_ed947fcc-a337-4b18-929d-cb187ea6c5e6/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i[949,962] [2021-10-13 00:52:41,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:52:41,255 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:52:41,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41 WrapperNode [2021-10-13 00:52:41,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:52:41,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:52:41,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:52:41,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:52:41,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:52:41,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:52:41,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:52:41,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:52:41,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:52:41,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:52:41,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:52:41,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:52:41,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (1/1) ... [2021-10-13 00:52:41,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:52:41,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:41,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:52:41,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:52:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:52:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 00:52:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:52:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:52:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 00:52:41,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 00:52:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 00:52:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 00:52:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 00:52:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 00:52:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:52:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 00:52:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:52:41,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:52:41,547 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 00:52:42,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:52:42,002 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:52:42,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:52:42 BoogieIcfgContainer [2021-10-13 00:52:42,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:52:42,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:52:42,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:52:42,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:52:42,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:52:40" (1/3) ... [2021-10-13 00:52:42,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10384b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:52:42, skipping insertion in model container [2021-10-13 00:52:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:41" (2/3) ... [2021-10-13 00:52:42,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10384b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:52:42, skipping insertion in model container [2021-10-13 00:52:42,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:52:42" (3/3) ... [2021-10-13 00:52:42,018 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2021-10-13 00:52:42,025 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 00:52:42,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:52:42,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:52:42,026 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 00:52:42,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,068 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,068 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,068 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,069 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,069 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,070 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,070 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,071 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,071 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,075 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,075 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,078 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,079 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,087 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,094 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,095 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,095 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,095 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:52:42,103 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 00:52:42,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:52:42,167 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 00:52:42,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 00:52:42,185 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 00:52:42,200 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-13 00:52:42,204 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-13 00:52:42,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-13 00:52:42,265 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-13 00:52:42,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 00:52:42,270 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 48 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 00:52:42,274 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 00:52:45,564 INFO L131 LiptonReduction]: Checked pairs total: 2586 [2021-10-13 00:52:45,565 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 00:52:45,573 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-13 00:52:45,618 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 00:52:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 00:52:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:52:45,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:45,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:45,633 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 00:52:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash -907350008, now seen corresponding path program 1 times [2021-10-13 00:52:45,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:45,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385236531] [2021-10-13 00:52:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:45,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:45,894 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 00:52:45,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:45,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385236531] [2021-10-13 00:52:45,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385236531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:45,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:45,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:52:45,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67302785] [2021-10-13 00:52:45,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:52:45,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:52:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:52:45,929 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 2 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 00:52:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:45,969 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-10-13 00:52:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:52:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 00:52:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:45,990 INFO L225 Difference]: With dead ends: 298 [2021-10-13 00:52:45,991 INFO L226 Difference]: Without dead ends: 298 [2021-10-13 00:52:45,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:52:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-13 00:52:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-13 00:52:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 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 00:52:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-13 00:52:46,093 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-13 00:52:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:46,094 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-13 00:52:46,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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 00:52:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-13 00:52:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:52:46,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:46,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:46,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:52:46,098 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 00:52:46,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1936916700, now seen corresponding path program 1 times [2021-10-13 00:52:46,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:46,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933064787] [2021-10-13 00:52:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:46,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:46,374 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 00:52:46,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:46,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933064787] [2021-10-13 00:52:46,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933064787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:46,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:46,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:52:46,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449008639] [2021-10-13 00:52:46,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:52:46,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:46,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:52:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:52:46,383 INFO L87 Difference]: Start difference. First operand 298 states and 864 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 00:52:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:46,477 INFO L93 Difference]: Finished difference Result 541 states and 1484 transitions. [2021-10-13 00:52:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:52:46,478 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 00:52:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:46,489 INFO L225 Difference]: With dead ends: 541 [2021-10-13 00:52:46,489 INFO L226 Difference]: Without dead ends: 410 [2021-10-13 00:52:46,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-13 00:52:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 340. [2021-10-13 00:52:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.7640117994100293) internal successors, (937), 339 states have internal predecessors, (937), 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 00:52:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 937 transitions. [2021-10-13 00:52:46,547 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 937 transitions. Word has length 9 [2021-10-13 00:52:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:46,547 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 937 transitions. [2021-10-13 00:52:46,547 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 00:52:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 937 transitions. [2021-10-13 00:52:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:52:46,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:46,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:46,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:52:46,554 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 00:52:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash -860080890, now seen corresponding path program 1 times [2021-10-13 00:52:46,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:46,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555519572] [2021-10-13 00:52:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:46,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:46,779 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 00:52:46,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:46,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555519572] [2021-10-13 00:52:46,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555519572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:46,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:46,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:52:46,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380603181] [2021-10-13 00:52:46,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:46,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:46,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:46,784 INFO L87 Difference]: Start difference. First operand 340 states and 937 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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 00:52:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:46,880 INFO L93 Difference]: Finished difference Result 444 states and 1134 transitions. [2021-10-13 00:52:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:52:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 00:52:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:46,886 INFO L225 Difference]: With dead ends: 444 [2021-10-13 00:52:46,886 INFO L226 Difference]: Without dead ends: 356 [2021-10-13 00:52:46,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-13 00:52:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 286. [2021-10-13 00:52:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.6596491228070174) internal successors, (758), 285 states have internal predecessors, (758), 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 00:52:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 758 transitions. [2021-10-13 00:52:46,919 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 758 transitions. Word has length 10 [2021-10-13 00:52:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:46,919 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 758 transitions. [2021-10-13 00:52:46,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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 00:52:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 758 transitions. [2021-10-13 00:52:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:52:46,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:46,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:46,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:52:46,930 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 00:52:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:46,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1655194349, now seen corresponding path program 1 times [2021-10-13 00:52:46,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:46,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706841778] [2021-10-13 00:52:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:46,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:47,071 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 00:52:47,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:47,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706841778] [2021-10-13 00:52:47,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706841778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:47,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:47,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:52:47,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216649735] [2021-10-13 00:52:47,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:47,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:47,079 INFO L87 Difference]: Start difference. First operand 286 states and 758 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 00:52:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:47,143 INFO L93 Difference]: Finished difference Result 378 states and 966 transitions. [2021-10-13 00:52:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:52:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 00:52:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:47,147 INFO L225 Difference]: With dead ends: 378 [2021-10-13 00:52:47,151 INFO L226 Difference]: Without dead ends: 338 [2021-10-13 00:52:47,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-13 00:52:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 278. [2021-10-13 00:52:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.6353790613718413) internal successors, (730), 277 states have internal predecessors, (730), 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 00:52:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 730 transitions. [2021-10-13 00:52:47,167 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 730 transitions. Word has length 11 [2021-10-13 00:52:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:47,167 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 730 transitions. [2021-10-13 00:52:47,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 00:52:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 730 transitions. [2021-10-13 00:52:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:52:47,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:47,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:47,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:52:47,179 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 00:52:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:47,181 INFO L82 PathProgramCache]: Analyzing trace with hash -541433362, now seen corresponding path program 1 times [2021-10-13 00:52:47,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:47,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730985874] [2021-10-13 00:52:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:47,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:47,314 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 00:52:47,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:47,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730985874] [2021-10-13 00:52:47,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730985874] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:47,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:47,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:52:47,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188051334] [2021-10-13 00:52:47,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:47,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:47,318 INFO L87 Difference]: Start difference. First operand 278 states and 730 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 00:52:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:47,380 INFO L93 Difference]: Finished difference Result 348 states and 881 transitions. [2021-10-13 00:52:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:52:47,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 00:52:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:47,415 INFO L225 Difference]: With dead ends: 348 [2021-10-13 00:52:47,415 INFO L226 Difference]: Without dead ends: 316 [2021-10-13 00:52:47,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-13 00:52:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2021-10-13 00:52:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.622568093385214) internal successors, (674), 257 states have internal predecessors, (674), 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 00:52:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 674 transitions. [2021-10-13 00:52:47,449 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 674 transitions. Word has length 12 [2021-10-13 00:52:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:47,450 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 674 transitions. [2021-10-13 00:52:47,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 00:52:47,451 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 674 transitions. [2021-10-13 00:52:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:52:47,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:47,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:47,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:52:47,454 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 00:52:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1904929641, now seen corresponding path program 1 times [2021-10-13 00:52:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:47,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751929093] [2021-10-13 00:52:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:47,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:47,578 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 00:52:47,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:47,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751929093] [2021-10-13 00:52:47,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751929093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:47,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:47,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:52:47,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172652842] [2021-10-13 00:52:47,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:47,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:47,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:47,589 INFO L87 Difference]: Start difference. First operand 258 states and 674 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 00:52:47,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:47,640 INFO L93 Difference]: Finished difference Result 330 states and 838 transitions. [2021-10-13 00:52:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:52:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 00:52:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:47,644 INFO L225 Difference]: With dead ends: 330 [2021-10-13 00:52:47,645 INFO L226 Difference]: Without dead ends: 302 [2021-10-13 00:52:47,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-13 00:52:47,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 238. [2021-10-13 00:52:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.5991561181434597) internal successors, (616), 237 states have internal predecessors, (616), 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 00:52:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 616 transitions. [2021-10-13 00:52:47,661 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 616 transitions. Word has length 12 [2021-10-13 00:52:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:47,662 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 616 transitions. [2021-10-13 00:52:47,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 00:52:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 616 transitions. [2021-10-13 00:52:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:52:47,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:47,664 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:47,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:52:47,665 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 00:52:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash 26152173, now seen corresponding path program 1 times [2021-10-13 00:52:47,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:47,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976825852] [2021-10-13 00:52:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:47,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:47,778 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 00:52:47,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:47,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976825852] [2021-10-13 00:52:47,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976825852] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:47,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:47,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:52:47,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336292896] [2021-10-13 00:52:47,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:47,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:47,782 INFO L87 Difference]: Start difference. First operand 238 states and 616 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 00:52:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:47,838 INFO L93 Difference]: Finished difference Result 346 states and 844 transitions. [2021-10-13 00:52:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:52:47,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 00:52:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:47,843 INFO L225 Difference]: With dead ends: 346 [2021-10-13 00:52:47,843 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 00:52:47,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 00:52:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 222. [2021-10-13 00:52:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.5610859728506785) internal successors, (566), 221 states have internal predecessors, (566), 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 00:52:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 566 transitions. [2021-10-13 00:52:47,860 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 566 transitions. Word has length 13 [2021-10-13 00:52:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:47,860 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 566 transitions. [2021-10-13 00:52:47,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 00:52:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 566 transitions. [2021-10-13 00:52:47,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:52:47,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:47,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:47,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:52:47,864 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 00:52:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:47,865 INFO L82 PathProgramCache]: Analyzing trace with hash -360731519, now seen corresponding path program 1 times [2021-10-13 00:52:47,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:47,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179997500] [2021-10-13 00:52:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:47,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:47,975 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 00:52:47,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:47,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179997500] [2021-10-13 00:52:47,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179997500] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:47,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:47,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:52:47,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441176275] [2021-10-13 00:52:47,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:52:47,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:52:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:52:47,977 INFO L87 Difference]: Start difference. First operand 222 states and 566 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:52:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:48,025 INFO L93 Difference]: Finished difference Result 356 states and 871 transitions. [2021-10-13 00:52:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:52:48,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:52:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:48,029 INFO L225 Difference]: With dead ends: 356 [2021-10-13 00:52:48,029 INFO L226 Difference]: Without dead ends: 200 [2021-10-13 00:52:48,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:52:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-13 00:52:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2021-10-13 00:52:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.392638036809816) internal successors, (390), 163 states have internal predecessors, (390), 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 00:52:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 390 transitions. [2021-10-13 00:52:48,038 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 390 transitions. Word has length 13 [2021-10-13 00:52:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:48,038 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 390 transitions. [2021-10-13 00:52:48,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:52:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 390 transitions. [2021-10-13 00:52:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:52:48,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:48,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:48,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:52:48,040 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 00:52:48,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:48,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1076699929, now seen corresponding path program 2 times [2021-10-13 00:52:48,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:48,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650223224] [2021-10-13 00:52:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:48,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:48,139 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 00:52:48,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:48,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650223224] [2021-10-13 00:52:48,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650223224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:48,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:48,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:52:48,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485353274] [2021-10-13 00:52:48,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:52:48,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:52:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:52:48,143 INFO L87 Difference]: Start difference. First operand 164 states and 390 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:52:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:48,183 INFO L93 Difference]: Finished difference Result 238 states and 555 transitions. [2021-10-13 00:52:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:52:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:52:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:48,185 INFO L225 Difference]: With dead ends: 238 [2021-10-13 00:52:48,185 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:52:48,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:52:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:52:48,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2021-10-13 00:52:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.347826086956522) internal successors, (270), 115 states have internal predecessors, (270), 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 00:52:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 270 transitions. [2021-10-13 00:52:48,192 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 270 transitions. Word has length 13 [2021-10-13 00:52:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:48,193 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 270 transitions. [2021-10-13 00:52:48,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:52:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 270 transitions. [2021-10-13 00:52:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:52:48,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:48,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:48,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:52:48,194 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 00:52:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash -627333249, now seen corresponding path program 1 times [2021-10-13 00:52:48,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:48,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956125421] [2021-10-13 00:52:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:48,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:48,265 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 00:52:48,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:48,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956125421] [2021-10-13 00:52:48,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956125421] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:48,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:48,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:52:48,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803815616] [2021-10-13 00:52:48,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:48,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:48,268 INFO L87 Difference]: Start difference. First operand 116 states and 270 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 00:52:48,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:48,298 INFO L93 Difference]: Finished difference Result 136 states and 306 transitions. [2021-10-13 00:52:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:52:48,299 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 00:52:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:48,300 INFO L225 Difference]: With dead ends: 136 [2021-10-13 00:52:48,300 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 00:52:48,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 00:52:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-13 00:52:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 63 states have internal predecessors, (128), 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 00:52:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2021-10-13 00:52:48,304 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 14 [2021-10-13 00:52:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:48,304 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2021-10-13 00:52:48,304 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 00:52:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2021-10-13 00:52:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:52:48,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:48,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:48,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:52:48,306 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 00:52:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 810098199, now seen corresponding path program 2 times [2021-10-13 00:52:48,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:48,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028744841] [2021-10-13 00:52:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:48,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:48,345 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 00:52:48,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:48,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028744841] [2021-10-13 00:52:48,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028744841] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:48,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:48,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:52:48,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428395796] [2021-10-13 00:52:48,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:52:48,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:52:48,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:52:48,348 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 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 00:52:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:48,362 INFO L93 Difference]: Finished difference Result 52 states and 91 transitions. [2021-10-13 00:52:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:52:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 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 00:52:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:48,364 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:52:48,364 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 00:52:48,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:52:48,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 00:52:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-13 00:52:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 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 00:52:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2021-10-13 00:52:48,367 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2021-10-13 00:52:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:48,367 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2021-10-13 00:52:48,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 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 00:52:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2021-10-13 00:52:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:52:48,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:48,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:48,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:52:48,369 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 00:52:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2102468891, now seen corresponding path program 1 times [2021-10-13 00:52:48,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:48,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877580607] [2021-10-13 00:52:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:48,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:48,414 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 00:52:48,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:48,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877580607] [2021-10-13 00:52:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877580607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:48,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:48,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:52:48,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038952991] [2021-10-13 00:52:48,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:52:48,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:52:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:52:48,417 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 00:52:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:48,428 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2021-10-13 00:52:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:52:48,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 00:52:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:48,430 INFO L225 Difference]: With dead ends: 34 [2021-10-13 00:52:48,430 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 00:52:48,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:52:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 00:52:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-13 00:52:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 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 00:52:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2021-10-13 00:52:48,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2021-10-13 00:52:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:48,433 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2021-10-13 00:52:48,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 00:52:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-10-13 00:52:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:52:48,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:48,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:48,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:52:48,434 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 00:52:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:48,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1333270741, now seen corresponding path program 1 times [2021-10-13 00:52:48,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:48,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976843344] [2021-10-13 00:52:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:48,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:48,482 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 00:52:48,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:48,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976843344] [2021-10-13 00:52:48,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976843344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:48,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:48,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:52:48,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704401322] [2021-10-13 00:52:48,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:48,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:48,485 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 00:52:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:48,495 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2021-10-13 00:52:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:52:48,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-10-13 00:52:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:48,496 INFO L225 Difference]: With dead ends: 26 [2021-10-13 00:52:48,496 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:52:48,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:52:48,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:52:48,497 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 00:52:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:52:48,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-13 00:52:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:48,498 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:52:48,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 00:52:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:52:48,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:52:48,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:52:48,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 00:52:48,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 00:52:48,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 00:52:48,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:52:48,507 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 00:52:48,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:52:48,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:52:48 BasicIcfg [2021-10-13 00:52:48,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:52:48,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:52:48,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:52:48,511 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:52:48,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:52:42" (3/4) ... [2021-10-13 00:52:48,515 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:52:48,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 00:52:48,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 00:52:48,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 00:52:48,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 00:52:48,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:52:48,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:52:48,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:52:48,567 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:52:48,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:52:48,569 INFO L168 Benchmark]: Toolchain (without parser) took 8159.61 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 48.4 MB in the beginning and 108.8 MB in the end (delta: -60.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:52:48,570 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:52:48,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.54 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 48.2 MB in the beginning and 95.6 MB in the end (delta: -47.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:52:48,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.95 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 94.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:52:48,572 INFO L168 Benchmark]: Boogie Preprocessor took 66.88 ms. Allocated memory is still 130.0 MB. Free memory was 94.1 MB in the beginning and 92.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:52:48,572 INFO L168 Benchmark]: RCFGBuilder took 580.96 ms. Allocated memory is still 130.0 MB. Free memory was 92.3 MB in the beginning and 80.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:52:48,573 INFO L168 Benchmark]: TraceAbstraction took 6501.55 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 79.5 MB in the beginning and 111.9 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:52:48,573 INFO L168 Benchmark]: Witness Printer took 57.52 ms. Allocated memory is still 157.3 MB. Free memory was 110.9 MB in the beginning and 108.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:52:48,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 847.54 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 48.2 MB in the beginning and 95.6 MB in the end (delta: -47.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.95 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 94.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.88 ms. Allocated memory is still 130.0 MB. Free memory was 94.1 MB in the beginning and 92.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 580.96 ms. Allocated memory is still 130.0 MB. Free memory was 92.3 MB in the beginning and 80.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6501.55 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 79.5 MB in the beginning and 111.9 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.52 ms. Allocated memory is still 157.3 MB. Free memory was 110.9 MB in the beginning and 108.8 MB in the end (delta: 2.1 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: 3361.0ms, 91 PlacesBefore, 32 PlacesAfterwards, 83 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 2586 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1456, positive: 1379, positive conditional: 0, positive unconditional: 1379, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 977, positive: 946, positive conditional: 0, positive unconditional: 946, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 977, positive: 940, positive conditional: 0, positive unconditional: 940, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1456, positive: 433, positive conditional: 0, positive unconditional: 433, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 977, unknown conditional: 0, unknown unconditional: 977] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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: 6349.6ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 37.9ms, AutomataDifference: 772.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3450.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 296 SDtfs, 334 SDslu, 440 SDs, 0 SdLazy, 182 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 233.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 316.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=2, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 270.1ms AutomataMinimizationTime, 13 MinimizatonAttempts, 448 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.5ms SsaConstructionTime, 376.8ms SatisfiabilityAnalysisTime, 1022.1ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 659 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 00:52:48,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed947fcc-a337-4b18-929d-cb187ea6c5e6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...