./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.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_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/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_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/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_33077142-82f8-4c0b-afae-fa7d75f2843f/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 7b9ee3f88e8f44d2d06ff193dda062789325bd80 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:07:10,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:07:10,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:07:10,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:07:10,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:07:10,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:07:10,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:07:10,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:07:10,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:07:10,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:07:10,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:07:10,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:07:10,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:07:10,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:07:10,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:07:10,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:07:10,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:07:10,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:07:10,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:07:10,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:07:10,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:07:10,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:07:10,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:07:10,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:07:10,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:07:10,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:07:10,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:07:10,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:07:10,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:07:10,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:07:10,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:07:10,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:07:10,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:07:10,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:07:10,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:07:10,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:07:10,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:07:10,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:07:10,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:07:10,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:07:10,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:07:10,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:07:10,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:07:10,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:07:10,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:07:10,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:07:10,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:07:10,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:07:10,798 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:07:10,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:07:10,798 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:07:10,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:07:10,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:07:10,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:07:10,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:07:10,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:07:10,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:07:10,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:07:10,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:07:10,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:07:10,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:07:10,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:07:10,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:07:10,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:07:10,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:07:10,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:07:10,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:07:10,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:07:10,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:07:10,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:07:10,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:07:10,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:07:10,802 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_33077142-82f8-4c0b-afae-fa7d75f2843f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b9ee3f88e8f44d2d06ff193dda062789325bd80 [2021-10-13 01:07:11,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:07:11,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:07:11,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:07:11,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:07:11,087 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:07:11,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2021-10-13 01:07:11,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/data/f79dc9ef8/fa58a26e4b884206aa952422eb2f125a/FLAGdc48423d5 [2021-10-13 01:07:11,619 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:07:11,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2021-10-13 01:07:11,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/data/f79dc9ef8/fa58a26e4b884206aa952422eb2f125a/FLAGdc48423d5 [2021-10-13 01:07:11,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/data/f79dc9ef8/fa58a26e4b884206aa952422eb2f125a [2021-10-13 01:07:11,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:07:11,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:07:11,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:07:11,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:07:11,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:07:11,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:11" (1/1) ... [2021-10-13 01:07:11,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45903ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:11, skipping insertion in model container [2021-10-13 01:07:11,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:11" (1/1) ... [2021-10-13 01:07:11,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:07:11,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:07:11,929 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_33077142-82f8-4c0b-afae-fa7d75f2843f/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i[950,963] [2021-10-13 01:07:12,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:07:12,105 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:07:12,121 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_33077142-82f8-4c0b-afae-fa7d75f2843f/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i[950,963] [2021-10-13 01:07:12,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:07:12,237 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:07:12,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12 WrapperNode [2021-10-13 01:07:12,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:07:12,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:07:12,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:07:12,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:07:12,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:07:12,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:07:12,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:07:12,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:07:12,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:07:12,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:07:12,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:07:12,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:07:12,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (1/1) ... [2021-10-13 01:07:12,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:07:12,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:12,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:07:12,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:07:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:07:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 01:07:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:07:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:07:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 01:07:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 01:07:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 01:07:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 01:07:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 01:07:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 01:07:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:07:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 01:07:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:07:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:07:12,430 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 01:07:12,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:07:12,823 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 01:07:12,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:12 BoogieIcfgContainer [2021-10-13 01:07:12,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:07:12,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:07:12,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:07:12,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:07:12,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:07:11" (1/3) ... [2021-10-13 01:07:12,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca6089a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:12, skipping insertion in model container [2021-10-13 01:07:12,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:12" (2/3) ... [2021-10-13 01:07:12,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca6089a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:12, skipping insertion in model container [2021-10-13 01:07:12,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:12" (3/3) ... [2021-10-13 01:07:12,835 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2021-10-13 01:07:12,841 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 01:07:12,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:07:12,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:07:12,842 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 01:07:12,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,891 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,891 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,897 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,897 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,908 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,908 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,914 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,914 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:07:12,919 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 01:07:12,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:07:12,974 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 01:07:12,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 01:07:12,989 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 01:07:13,000 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 01:07:13,003 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 01:07:13,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-13 01:07:13,059 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-13 01:07:13,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 01:07:13,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 01:07:13,067 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 01:07:16,111 INFO L131 LiptonReduction]: Checked pairs total: 2982 [2021-10-13 01:07:16,112 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 01:07:16,130 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-13 01:07:16,157 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:07:16,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:16,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:16,168 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 01:07:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash -82956535, now seen corresponding path program 1 times [2021-10-13 01:07:16,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:16,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183652111] [2021-10-13 01:07:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:16,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:16,479 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 01:07:16,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:16,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183652111] [2021-10-13 01:07:16,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183652111] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:16,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:16,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 01:07:16,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866402500] [2021-10-13 01:07:16,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:07:16,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:07:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:07:16,521 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:16,588 INFO L93 Difference]: Finished difference Result 349 states and 924 transitions. [2021-10-13 01:07:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:07:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 01:07:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:16,616 INFO L225 Difference]: With dead ends: 349 [2021-10-13 01:07:16,616 INFO L226 Difference]: Without dead ends: 325 [2021-10-13 01:07:16,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:07:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-13 01:07:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 290. [2021-10-13 01:07:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.7231833910034604) internal successors, (787), 289 states have internal predecessors, (787), 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 01:07:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 787 transitions. [2021-10-13 01:07:16,711 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 787 transitions. Word has length 8 [2021-10-13 01:07:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:16,712 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 787 transitions. [2021-10-13 01:07:16,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 787 transitions. [2021-10-13 01:07:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:07:16,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:16,715 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:16,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:07:16,716 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 01:07:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:16,717 INFO L82 PathProgramCache]: Analyzing trace with hash 788497753, now seen corresponding path program 1 times [2021-10-13 01:07:16,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:16,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554254741] [2021-10-13 01:07:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:16,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:16,845 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 01:07:16,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:16,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554254741] [2021-10-13 01:07:16,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554254741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:16,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:16,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:07:16,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2878932] [2021-10-13 01:07:16,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:07:16,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:16,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:07:16,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:16,854 INFO L87 Difference]: Start difference. First operand 290 states and 787 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 01:07:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:16,885 INFO L93 Difference]: Finished difference Result 308 states and 804 transitions. [2021-10-13 01:07:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:07:16,886 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 01:07:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:16,890 INFO L225 Difference]: With dead ends: 308 [2021-10-13 01:07:16,890 INFO L226 Difference]: Without dead ends: 308 [2021-10-13 01:07:16,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-13 01:07:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 270. [2021-10-13 01:07:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.676579925650558) internal successors, (720), 269 states have internal predecessors, (720), 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 01:07:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 720 transitions. [2021-10-13 01:07:16,928 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 720 transitions. Word has length 9 [2021-10-13 01:07:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:16,929 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 720 transitions. [2021-10-13 01:07:16,929 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 01:07:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 720 transitions. [2021-10-13 01:07:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:07:16,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:16,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:16,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:07:16,933 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 01:07:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1691827499, now seen corresponding path program 1 times [2021-10-13 01:07:16,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:16,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806745944] [2021-10-13 01:07:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:16,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,027 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 01:07:17,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806745944] [2021-10-13 01:07:17,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806745944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:17,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:17,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:07:17,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937316146] [2021-10-13 01:07:17,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:07:17,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:07:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:17,036 INFO L87 Difference]: Start difference. First operand 270 states and 720 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 01:07:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,063 INFO L93 Difference]: Finished difference Result 291 states and 756 transitions. [2021-10-13 01:07:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:07:17,063 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 01:07:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,067 INFO L225 Difference]: With dead ends: 291 [2021-10-13 01:07:17,067 INFO L226 Difference]: Without dead ends: 291 [2021-10-13 01:07:17,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-13 01:07:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 248. [2021-10-13 01:07:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.6558704453441297) internal successors, (656), 247 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 656 transitions. [2021-10-13 01:07:17,081 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 656 transitions. Word has length 9 [2021-10-13 01:07:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,081 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 656 transitions. [2021-10-13 01:07:17,081 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 01:07:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 656 transitions. [2021-10-13 01:07:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:07:17,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:17,088 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:17,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:07:17,088 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 01:07:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1357860645, now seen corresponding path program 1 times [2021-10-13 01:07:17,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:17,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815308461] [2021-10-13 01:07:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:17,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,222 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 01:07:17,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815308461] [2021-10-13 01:07:17,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815308461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:17,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:17,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:07:17,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615800988] [2021-10-13 01:07:17,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:07:17,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:17,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:07:17,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:17,225 INFO L87 Difference]: Start difference. First operand 248 states and 656 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 01:07:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,269 INFO L93 Difference]: Finished difference Result 323 states and 835 transitions. [2021-10-13 01:07:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:07:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 01:07:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,274 INFO L225 Difference]: With dead ends: 323 [2021-10-13 01:07:17,276 INFO L226 Difference]: Without dead ends: 311 [2021-10-13 01:07:17,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:07:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-13 01:07:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 260. [2021-10-13 01:07:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.6525096525096523) internal successors, (687), 259 states have internal predecessors, (687), 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 01:07:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 687 transitions. [2021-10-13 01:07:17,288 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 687 transitions. Word has length 10 [2021-10-13 01:07:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,289 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 687 transitions. [2021-10-13 01:07:17,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 01:07:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 687 transitions. [2021-10-13 01:07:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:07:17,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:17,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:17,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:07:17,294 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 01:07:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:17,295 INFO L82 PathProgramCache]: Analyzing trace with hash 882945873, now seen corresponding path program 2 times [2021-10-13 01:07:17,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:17,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22294858] [2021-10-13 01:07:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:17,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,420 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 01:07:17,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22294858] [2021-10-13 01:07:17,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22294858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:17,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:17,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:07:17,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491358761] [2021-10-13 01:07:17,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:07:17,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:07:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:07:17,423 INFO L87 Difference]: Start difference. First operand 260 states and 687 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 01:07:17,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,444 INFO L93 Difference]: Finished difference Result 322 states and 801 transitions. [2021-10-13 01:07:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:07:17,445 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 01:07:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,446 INFO L225 Difference]: With dead ends: 322 [2021-10-13 01:07:17,446 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 01:07:17,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:07:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 01:07:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 138. [2021-10-13 01:07:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.3503649635036497) internal successors, (322), 137 states have internal predecessors, (322), 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 01:07:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 322 transitions. [2021-10-13 01:07:17,453 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 322 transitions. Word has length 10 [2021-10-13 01:07:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,453 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 322 transitions. [2021-10-13 01:07:17,453 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 01:07:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 322 transitions. [2021-10-13 01:07:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:07:17,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:17,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:17,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:07:17,455 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 01:07:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1644883869, now seen corresponding path program 1 times [2021-10-13 01:07:17,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:17,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157927118] [2021-10-13 01:07:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:17,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,508 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 01:07:17,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157927118] [2021-10-13 01:07:17,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157927118] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:17,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:17,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:07:17,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070660599] [2021-10-13 01:07:17,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:07:17,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:07:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:17,512 INFO L87 Difference]: Start difference. First operand 138 states and 322 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:07:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,534 INFO L93 Difference]: Finished difference Result 146 states and 336 transitions. [2021-10-13 01:07:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:07:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:07:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,536 INFO L225 Difference]: With dead ends: 146 [2021-10-13 01:07:17,536 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 01:07:17,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 01:07:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 132. [2021-10-13 01:07:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.3435114503816794) internal successors, (307), 131 states have internal predecessors, (307), 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 01:07:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 307 transitions. [2021-10-13 01:07:17,543 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 307 transitions. Word has length 11 [2021-10-13 01:07:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,544 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 307 transitions. [2021-10-13 01:07:17,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:07:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 307 transitions. [2021-10-13 01:07:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:07:17,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:17,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:17,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:07:17,546 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 01:07:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash 426996881, now seen corresponding path program 1 times [2021-10-13 01:07:17,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:17,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170583667] [2021-10-13 01:07:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:17,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,607 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 01:07:17,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170583667] [2021-10-13 01:07:17,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170583667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:17,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:17,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:07:17,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672205369] [2021-10-13 01:07:17,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:07:17,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:07:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:07:17,610 INFO L87 Difference]: Start difference. First operand 132 states and 307 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,635 INFO L93 Difference]: Finished difference Result 146 states and 332 transitions. [2021-10-13 01:07:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:07:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 01:07:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,637 INFO L225 Difference]: With dead ends: 146 [2021-10-13 01:07:17,637 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 01:07:17,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:07:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 01:07:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-13 01:07:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.1481481481481484) internal successors, (174), 81 states have internal predecessors, (174), 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 01:07:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2021-10-13 01:07:17,642 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 12 [2021-10-13 01:07:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,642 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2021-10-13 01:07:17,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2021-10-13 01:07:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:07:17,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:17,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:17,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:07:17,644 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 01:07:17,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:17,644 INFO L82 PathProgramCache]: Analyzing trace with hash -627267697, now seen corresponding path program 1 times [2021-10-13 01:07:17,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:17,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688280966] [2021-10-13 01:07:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:17,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,709 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 01:07:17,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688280966] [2021-10-13 01:07:17,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688280966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:17,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:17,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:07:17,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952953612] [2021-10-13 01:07:17,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:07:17,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:17,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:07:17,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:07:17,711 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,725 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2021-10-13 01:07:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:07:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 01:07:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,726 INFO L225 Difference]: With dead ends: 74 [2021-10-13 01:07:17,726 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:07:17,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:07:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:07:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:07:17,727 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 01:07:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:07:17,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-13 01:07:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,728 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:07:17,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:07:17,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:07:17,731 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:07:17,731 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 01:07:17,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 01:07:17,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 01:07:17,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:07:17,736 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 01:07:17,736 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:07:17,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:07:17 BasicIcfg [2021-10-13 01:07:17,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:07:17,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:07:17,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:07:17,739 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:07:17,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:12" (3/4) ... [2021-10-13 01:07:17,743 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:07:17,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 01:07:17,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 01:07:17,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 01:07:17,754 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 01:07:17,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:07:17,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:07:17,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:07:17,793 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:07:17,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:07:17,795 INFO L168 Benchmark]: Toolchain (without parser) took 6121.01 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 65.6 MB in the beginning and 64.9 MB in the end (delta: 782.2 kB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:07:17,795 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory was 83.7 MB in the beginning and 83.6 MB in the end (delta: 54.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:07:17,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.4 MB in the beginning and 70.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:07:17,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 68.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:07:17,796 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 104.9 MB. Free memory was 68.2 MB in the beginning and 66.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:07:17,797 INFO L168 Benchmark]: RCFGBuilder took 513.42 ms. Allocated memory is still 104.9 MB. Free memory was 66.8 MB in the beginning and 54.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:07:17,797 INFO L168 Benchmark]: TraceAbstraction took 4910.75 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 54.0 MB in the beginning and 68.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:07:17,798 INFO L168 Benchmark]: Witness Printer took 54.33 ms. Allocated memory is still 136.3 MB. Free memory was 68.0 MB in the beginning and 64.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:07:17,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory was 83.7 MB in the beginning and 83.6 MB in the end (delta: 54.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 561.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.4 MB in the beginning and 70.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 68.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 104.9 MB. Free memory was 68.2 MB in the beginning and 66.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 513.42 ms. Allocated memory is still 104.9 MB. Free memory was 66.8 MB in the beginning and 54.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4910.75 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 54.0 MB in the beginning and 68.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 54.33 ms. Allocated memory is still 136.3 MB. Free memory was 68.0 MB in the beginning and 64.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3108.8ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1568, positive: 1459, positive conditional: 0, positive unconditional: 1459, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 983, positive: 932, positive conditional: 0, positive unconditional: 932, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 983, positive: 919, positive conditional: 0, positive unconditional: 919, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 163, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1568, positive: 527, positive conditional: 0, positive unconditional: 527, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 983, unknown conditional: 0, unknown unconditional: 983] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4770.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 24.8ms, AutomataDifference: 336.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3183.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 137 SDtfs, 179 SDslu, 153 SDs, 0 SdLazy, 63 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=1, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 157.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 191 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.9ms SsaConstructionTime, 232.2ms SatisfiabilityAnalysisTime, 541.3ms InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 659 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 01:07:17,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33077142-82f8-4c0b-afae-fa7d75f2843f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...