./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:28:36,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:28:36,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:28:36,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:28:36,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:28:36,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:28:36,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:28:36,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:28:36,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:28:36,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:28:36,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:28:36,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:28:36,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:28:36,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:28:36,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:28:36,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:28:36,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:28:36,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:28:36,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:28:36,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:28:36,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:28:36,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:28:36,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:28:36,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:28:36,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:28:36,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:28:36,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:28:36,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:28:36,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:28:36,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:28:36,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:28:36,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:28:36,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:28:36,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:28:36,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:28:36,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:28:36,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:28:36,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:28:36,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:28:36,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:28:36,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:28:36,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:28:36,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:28:36,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:28:36,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:28:36,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:28:36,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:28:36,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:28:36,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:28:36,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:28:36,778 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:28:36,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:28:36,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:28:36,780 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:28:36,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:28:36,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:28:36,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:28:36,781 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:28:36,781 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:28:36,781 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:28:36,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:28:36,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:28:36,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:28:36,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:28:36,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:28:36,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:28:36,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:28:36,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:28:36,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:28:36,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:28:36,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:28:36,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:28:36,784 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_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f [2022-11-20 11:28:37,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:28:37,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:28:37,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:28:37,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:28:37,138 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:28:37,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-11-20 11:28:40,174 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:28:40,389 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:28:40,390 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-11-20 11:28:40,398 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/data/fefc3aa06/ffbbb738961d433e976272358eb65060/FLAGd536bb4b4 [2022-11-20 11:28:40,416 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/data/fefc3aa06/ffbbb738961d433e976272358eb65060 [2022-11-20 11:28:40,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:28:40,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:28:40,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:28:40,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:28:40,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:28:40,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea50d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40, skipping insertion in model container [2022-11-20 11:28:40,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:28:40,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:28:40,727 WARN L237 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_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5274,5287] [2022-11-20 11:28:40,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:28:40,757 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:28:40,824 WARN L237 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_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5274,5287] [2022-11-20 11:28:40,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:28:40,858 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:28:40,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40 WrapperNode [2022-11-20 11:28:40,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:28:40,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:28:40,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:28:40,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:28:40,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,914 INFO L138 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 358 [2022-11-20 11:28:40,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:28:40,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:28:40,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:28:40,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:28:40,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:28:40,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:28:40,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:28:40,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:28:40,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (1/1) ... [2022-11-20 11:28:40,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:28:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:28:40,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:28:41,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a327eb9-a8b8-4520-adbf-f6d18c2cd899/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:28:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:28:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:28:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:28:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:28:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:28:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:28:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:28:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:28:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:28:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:28:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 11:28:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 11:28:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:28:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-20 11:28:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-20 11:28:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-20 11:28:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-20 11:28:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2022-11-20 11:28:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2022-11-20 11:28:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2022-11-20 11:28:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2022-11-20 11:28:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:28:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:28:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:28:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:28:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:28:41,063 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:28:41,193 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:28:41,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:28:41,855 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:28:41,957 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:28:41,957 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:28:41,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:28:41 BoogieIcfgContainer [2022-11-20 11:28:41,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:28:41,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:28:41,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:28:41,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:28:41,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:28:40" (1/3) ... [2022-11-20 11:28:41,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97b7969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:28:41, skipping insertion in model container [2022-11-20 11:28:41,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:40" (2/3) ... [2022-11-20 11:28:41,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97b7969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:28:41, skipping insertion in model container [2022-11-20 11:28:41,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:28:41" (3/3) ... [2022-11-20 11:28:41,969 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2022-11-20 11:28:41,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:28:41,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-20 11:28:41,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:28:42,099 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 11:28:42,135 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:28:42,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 270 transitions, 604 flow [2022-11-20 11:28:42,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 270 transitions, 604 flow [2022-11-20 11:28:42,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 270 transitions, 604 flow [2022-11-20 11:28:42,281 INFO L130 PetriNetUnfolder]: 2/262 cut-off events. [2022-11-20 11:28:42,281 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:28:42,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 262 events. 2/262 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 218 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2022-11-20 11:28:42,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 7070 [2022-11-20 11:29:09,361 INFO L134 LiptonReduction]: Checked pairs total: 19031 [2022-11-20 11:29:09,362 INFO L136 LiptonReduction]: Total number of compositions: 241 [2022-11-20 11:29:09,374 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 117 places, 92 transitions, 248 flow [2022-11-20 11:29:13,464 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65603 states, 65569 states have (on average 5.803580960514878) internal successors, (380535), 65602 states have internal predecessors, (380535), 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) [2022-11-20 11:29:13,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:29:13,522 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31587ae6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:29:13,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-20 11:29:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 65603 states, 65569 states have (on average 5.803580960514878) internal successors, (380535), 65602 states have internal predecessors, (380535), 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) [2022-11-20 11:29:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 11:29:13,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:13,927 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 11:29:13,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 11:29:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1101, now seen corresponding path program 1 times [2022-11-20 11:29:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:13,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477653193] [2022-11-20 11:29:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:14,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477653193] [2022-11-20 11:29:14,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477653193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:14,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:14,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 11:29:14,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634766359] [2022-11-20 11:29:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:14,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:29:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:29:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:29:14,259 INFO L87 Difference]: Start difference. First operand has 65603 states, 65569 states have (on average 5.803580960514878) internal successors, (380535), 65602 states have internal predecessors, (380535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-20 11:29:16,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:16,281 INFO L93 Difference]: Finished difference Result 65600 states and 380532 transitions. [2022-11-20 11:29:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:29:16,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-20 11:29:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:17,801 INFO L225 Difference]: With dead ends: 65600 [2022-11-20 11:29:17,802 INFO L226 Difference]: Without dead ends: 65600 [2022-11-20 11:29:17,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:29:17,806 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65600 states. [2022-11-20 11:29:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65600 to 65600. [2022-11-20 11:29:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65600 states, 65569 states have (on average 5.803535207186322) internal successors, (380532), 65599 states have internal predecessors, (380532), 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) [2022-11-20 11:29:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65600 states to 65600 states and 380532 transitions. [2022-11-20 11:29:22,994 INFO L78 Accepts]: Start accepts. Automaton has 65600 states and 380532 transitions. Word has length 1 [2022-11-20 11:29:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:22,994 INFO L495 AbstractCegarLoop]: Abstraction has 65600 states and 380532 transitions. [2022-11-20 11:29:22,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-20 11:29:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 65600 states and 380532 transitions. [2022-11-20 11:29:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:29:22,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:22,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:29:22,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:29:22,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 11:29:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1083161, now seen corresponding path program 1 times [2022-11-20 11:29:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:22,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058659877] [2022-11-20 11:29:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:24,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058659877] [2022-11-20 11:29:24,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058659877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:24,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:24,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:29:24,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602536592] [2022-11-20 11:29:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:24,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:24,792 INFO L87 Difference]: Start difference. First operand 65600 states and 380532 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 11:29:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:26,279 INFO L93 Difference]: Finished difference Result 63409 states and 368132 transitions. [2022-11-20 11:29:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-20 11:29:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:26,943 INFO L225 Difference]: With dead ends: 63409 [2022-11-20 11:29:26,943 INFO L226 Difference]: Without dead ends: 63409 [2022-11-20 11:29:26,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:26,944 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:26,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63409 states. [2022-11-20 11:29:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63409 to 63409. [2022-11-20 11:29:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63409 states, 63380 states have (on average 5.808330703692016) internal successors, (368132), 63408 states have internal predecessors, (368132), 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) [2022-11-20 11:29:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63409 states to 63409 states and 368132 transitions. [2022-11-20 11:29:30,486 INFO L78 Accepts]: Start accepts. Automaton has 63409 states and 368132 transitions. Word has length 3 [2022-11-20 11:29:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 63409 states and 368132 transitions. [2022-11-20 11:29:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 11:29:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 63409 states and 368132 transitions. [2022-11-20 11:29:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:29:30,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:30,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:29:30,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:29:30,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 11:29:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1083162, now seen corresponding path program 1 times [2022-11-20 11:29:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:30,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581099873] [2022-11-20 11:29:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:31,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581099873] [2022-11-20 11:29:31,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581099873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:31,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:31,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:29:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884819224] [2022-11-20 11:29:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:31,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:31,784 INFO L87 Difference]: Start difference. First operand 63409 states and 368132 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 11:29:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:32,727 INFO L93 Difference]: Finished difference Result 61218 states and 355732 transitions. [2022-11-20 11:29:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:32,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-20 11:29:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:34,349 INFO L225 Difference]: With dead ends: 61218 [2022-11-20 11:29:34,349 INFO L226 Difference]: Without dead ends: 61218 [2022-11-20 11:29:34,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:34,355 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:34,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61218 states. [2022-11-20 11:29:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61218 to 61218. [2022-11-20 11:29:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61218 states, 61191 states have (on average 5.813469301041002) internal successors, (355732), 61217 states have internal predecessors, (355732), 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) [2022-11-20 11:29:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61218 states to 61218 states and 355732 transitions. [2022-11-20 11:29:38,187 INFO L78 Accepts]: Start accepts. Automaton has 61218 states and 355732 transitions. Word has length 3 [2022-11-20 11:29:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:38,187 INFO L495 AbstractCegarLoop]: Abstraction has 61218 states and 355732 transitions. [2022-11-20 11:29:38,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 11:29:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 61218 states and 355732 transitions. [2022-11-20 11:29:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:29:38,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:38,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:29:38,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:29:38,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 11:29:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1040943073, now seen corresponding path program 1 times [2022-11-20 11:29:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:38,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494904334] [2022-11-20 11:29:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:38,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:38,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:38,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494904334] [2022-11-20 11:29:38,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494904334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:38,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:38,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:29:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935996679] [2022-11-20 11:29:38,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:38,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:38,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:38,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:38,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:38,895 INFO L87 Difference]: Start difference. First operand 61218 states and 355732 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 11:29:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:40,465 INFO L93 Difference]: Finished difference Result 60477 states and 352058 transitions. [2022-11-20 11:29:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-20 11:29:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:40,939 INFO L225 Difference]: With dead ends: 60477 [2022-11-20 11:29:40,939 INFO L226 Difference]: Without dead ends: 60477 [2022-11-20 11:29:40,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:40,941 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:40,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60477 states. [2022-11-20 11:29:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60477 to 60477. [2022-11-20 11:29:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60477 states, 60452 states have (on average 5.823761000463177) internal successors, (352058), 60476 states have internal predecessors, (352058), 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) [2022-11-20 11:29:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60477 states to 60477 states and 352058 transitions. [2022-11-20 11:29:45,119 INFO L78 Accepts]: Start accepts. Automaton has 60477 states and 352058 transitions. Word has length 5 [2022-11-20 11:29:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:45,120 INFO L495 AbstractCegarLoop]: Abstraction has 60477 states and 352058 transitions. [2022-11-20 11:29:45,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 11:29:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 60477 states and 352058 transitions. [2022-11-20 11:29:45,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:29:45,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:45,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:29:45,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:29:45,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 11:29:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:45,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1040943075, now seen corresponding path program 1 times [2022-11-20 11:29:45,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:45,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641097035] [2022-11-20 11:29:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:45,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641097035] [2022-11-20 11:29:45,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641097035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:45,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:45,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:29:45,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495762699] [2022-11-20 11:29:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:45,538 INFO L87 Difference]: Start difference. First operand 60477 states and 352058 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 11:29:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:47,040 INFO L93 Difference]: Finished difference Result 59736 states and 348384 transitions. [2022-11-20 11:29:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:47,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-20 11:29:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:47,421 INFO L225 Difference]: With dead ends: 59736 [2022-11-20 11:29:47,421 INFO L226 Difference]: Without dead ends: 59736 [2022-11-20 11:29:47,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:47,422 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:47,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59736 states. [2022-11-20 11:29:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59736 to 59736. [2022-11-20 11:29:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59736 states, 59713 states have (on average 5.834307437241471) internal successors, (348384), 59735 states have internal predecessors, (348384), 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) [2022-11-20 11:29:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59736 states to 59736 states and 348384 transitions. [2022-11-20 11:29:51,056 INFO L78 Accepts]: Start accepts. Automaton has 59736 states and 348384 transitions. Word has length 5 [2022-11-20 11:29:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:51,056 INFO L495 AbstractCegarLoop]: Abstraction has 59736 states and 348384 transitions. [2022-11-20 11:29:51,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 11:29:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 59736 states and 348384 transitions. [2022-11-20 11:29:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:29:51,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:51,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:51,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:29:51,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-20 11:29:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:51,059 INFO L85 PathProgramCache]: Analyzing trace with hash -381059723, now seen corresponding path program 1 times [2022-11-20 11:29:51,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:51,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064855716] [2022-11-20 11:29:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064855716] [2022-11-20 11:29:51,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064855716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:51,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:51,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:29:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547541130] [2022-11-20 11:29:51,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:51,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:51,539 INFO L87 Difference]: Start difference. First operand 59736 states and 348384 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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)