./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- 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-2329fc7 [2022-12-14 10:57:29,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:57:29,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:57:29,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:57:29,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:57:29,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:57:29,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:57:29,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:57:29,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:57:29,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:57:29,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:57:29,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:57:29,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:57:29,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:57:29,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:57:29,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:57:29,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:57:29,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:57:29,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:57:29,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:57:29,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:57:29,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:57:29,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:57:29,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:57:29,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:57:29,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:57:29,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:57:29,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:57:29,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:57:29,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:57:29,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:57:29,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:57:29,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:57:29,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:57:29,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:57:29,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:57:29,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:57:29,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:57:29,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:57:29,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:57:29,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:57:29,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:57:29,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:57:29,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:57:29,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:57:29,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:57:29,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:57:29,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:57:29,781 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:57:29,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:57:29,782 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:57:29,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:57:29,782 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:57:29,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:57:29,782 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:57:29,782 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:57:29,783 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:57:29,783 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:57:29,783 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:57:29,783 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:57:29,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:57:29,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:57:29,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:57:29,784 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:57:29,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:57:29,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:57:29,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:57:29,785 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:57:29,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:57:29,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:57:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:57:29,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:57:29,786 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:57:29,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:57:29,786 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:57:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:57:29,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:57:29,787 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2022-12-14 10:57:29,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:57:30,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:57:30,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:57:30,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:57:30,005 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:57:30,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-14 10:57:32,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:57:32,804 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:57:32,805 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-14 10:57:32,813 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data/d72828d0f/9b91c766d1f7457a8d54aa9acf7a6ea3/FLAG9413473d8 [2022-12-14 10:57:32,823 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data/d72828d0f/9b91c766d1f7457a8d54aa9acf7a6ea3 [2022-12-14 10:57:32,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:57:32,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:57:32,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:57:32,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:57:32,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:57:32,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:57:32" (1/1) ... [2022-12-14 10:57:32,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e09ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:32, skipping insertion in model container [2022-12-14 10:57:32,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:57:32" (1/1) ... [2022-12-14 10:57:32,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:57:32,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:57:33,066 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-14 10:57:33,074 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-14 10:57:33,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:57:33,087 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:57:33,109 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-14 10:57:33,112 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-14 10:57:33,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:57:33,137 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:57:33,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33 WrapperNode [2022-12-14 10:57:33,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:57:33,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:57:33,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:57:33,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:57:33,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,169 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2022-12-14 10:57:33,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:57:33,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:57:33,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:57:33,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:57:33,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:57:33,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:57:33,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:57:33,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:57:33,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (1/1) ... [2022-12-14 10:57:33,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:57:33,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:33,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:57:33,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:57:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:57:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-14 10:57:33,243 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-14 10:57:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-14 10:57:33,243 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-14 10:57:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:57:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 10:57:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:57:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:57:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:57:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:57:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:57:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:57:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:57:33,246 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:57:33,352 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:57:33,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:57:33,607 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:57:33,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:57:33,616 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 10:57:33,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:33 BoogieIcfgContainer [2022-12-14 10:57:33,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:57:33,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:57:33,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:57:33,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:57:33,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:57:32" (1/3) ... [2022-12-14 10:57:33,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54945a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:57:33, skipping insertion in model container [2022-12-14 10:57:33,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:33" (2/3) ... [2022-12-14 10:57:33,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54945a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:57:33, skipping insertion in model container [2022-12-14 10:57:33,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:33" (3/3) ... [2022-12-14 10:57:33,626 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-12-14 10:57:33,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:57:33,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-14 10:57:33,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:57:33,725 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 10:57:33,749 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:57:33,760 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 166 transitions, 348 flow [2022-12-14 10:57:33,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 166 transitions, 348 flow [2022-12-14 10:57:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 166 transitions, 348 flow [2022-12-14 10:57:33,805 INFO L130 PetriNetUnfolder]: 10/164 cut-off events. [2022-12-14 10:57:33,806 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 10:57:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 10/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 326 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-12-14 10:57:33,812 INFO L119 LiptonReduction]: Number of co-enabled transitions 5240 [2022-12-14 10:57:54,469 INFO L134 LiptonReduction]: Checked pairs total: 12438 [2022-12-14 10:57:54,469 INFO L136 LiptonReduction]: Total number of compositions: 179 [2022-12-14 10:57:54,476 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 48 transitions, 112 flow [2022-12-14 10:57:54,526 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 578 states, 512 states have (on average 3.517578125) internal successors, (1801), 577 states have internal predecessors, (1801), 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) [2022-12-14 10:57:54,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:57:54,548 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;@34013354, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:57:54,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-14 10:57:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 512 states have (on average 3.517578125) internal successors, (1801), 577 states have internal predecessors, (1801), 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) [2022-12-14 10:57:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 10:57:54,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:54,555 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 10:57:54,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 671, now seen corresponding path program 1 times [2022-12-14 10:57:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:54,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197023997] [2022-12-14 10:57:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:54,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:54,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197023997] [2022-12-14 10:57:54,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197023997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:54,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:54,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 10:57:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066256272] [2022-12-14 10:57:54,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:54,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:57:54,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:57:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:57:54,677 INFO L87 Difference]: Start difference. First operand has 578 states, 512 states have (on average 3.517578125) internal successors, (1801), 577 states have internal predecessors, (1801), 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) [2022-12-14 10:57:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:54,765 INFO L93 Difference]: Finished difference Result 528 states and 1566 transitions. [2022-12-14 10:57:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:57:54,768 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 [2022-12-14 10:57:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:54,783 INFO L225 Difference]: With dead ends: 528 [2022-12-14 10:57:54,783 INFO L226 Difference]: Without dead ends: 528 [2022-12-14 10:57:54,784 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 [2022-12-14 10:57:54,787 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:54,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-12-14 10:57:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-12-14 10:57:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 478 states have (on average 3.276150627615063) internal successors, (1566), 527 states have internal predecessors, (1566), 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) [2022-12-14 10:57:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1566 transitions. [2022-12-14 10:57:54,856 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1566 transitions. Word has length 1 [2022-12-14 10:57:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:54,856 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1566 transitions. [2022-12-14 10:57:54,856 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) [2022-12-14 10:57:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1566 transitions. [2022-12-14 10:57:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:57:54,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:54,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:57:54,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:57:54,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:54,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash 660626, now seen corresponding path program 1 times [2022-12-14 10:57:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:54,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608095710] [2022-12-14 10:57:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:55,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:55,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608095710] [2022-12-14 10:57:55,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608095710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:55,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:55,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:57:55,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499349352] [2022-12-14 10:57:55,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:55,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:55,088 INFO L87 Difference]: Start difference. First operand 528 states and 1566 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) [2022-12-14 10:57:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:55,145 INFO L93 Difference]: Finished difference Result 507 states and 1520 transitions. [2022-12-14 10:57:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:55,145 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 [2022-12-14 10:57:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:55,149 INFO L225 Difference]: With dead ends: 507 [2022-12-14 10:57:55,150 INFO L226 Difference]: Without dead ends: 507 [2022-12-14 10:57:55,150 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 [2022-12-14 10:57:55,151 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:55,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-12-14 10:57:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2022-12-14 10:57:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 464 states have (on average 3.2758620689655173) internal successors, (1520), 506 states have internal predecessors, (1520), 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) [2022-12-14 10:57:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1520 transitions. [2022-12-14 10:57:55,174 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1520 transitions. Word has length 3 [2022-12-14 10:57:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:55,175 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 1520 transitions. [2022-12-14 10:57:55,175 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) [2022-12-14 10:57:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1520 transitions. [2022-12-14 10:57:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:57:55,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:55,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:57:55,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:57:55,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 660627, now seen corresponding path program 1 times [2022-12-14 10:57:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:55,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646541323] [2022-12-14 10:57:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:55,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:55,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646541323] [2022-12-14 10:57:55,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646541323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:55,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:55,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:57:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892254991] [2022-12-14 10:57:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:55,238 INFO L87 Difference]: Start difference. First operand 507 states and 1520 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) [2022-12-14 10:57:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:55,291 INFO L93 Difference]: Finished difference Result 486 states and 1474 transitions. [2022-12-14 10:57:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:55,292 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 [2022-12-14 10:57:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:55,295 INFO L225 Difference]: With dead ends: 486 [2022-12-14 10:57:55,295 INFO L226 Difference]: Without dead ends: 486 [2022-12-14 10:57:55,296 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 [2022-12-14 10:57:55,297 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:55,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-12-14 10:57:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-12-14 10:57:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 450 states have (on average 3.2755555555555556) internal successors, (1474), 485 states have internal predecessors, (1474), 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) [2022-12-14 10:57:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1474 transitions. [2022-12-14 10:57:55,315 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1474 transitions. Word has length 3 [2022-12-14 10:57:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:55,316 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 1474 transitions. [2022-12-14 10:57:55,316 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) [2022-12-14 10:57:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1474 transitions. [2022-12-14 10:57:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:57:55,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:55,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:57:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:57:55,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash 634841936, now seen corresponding path program 1 times [2022-12-14 10:57:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:55,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639494618] [2022-12-14 10:57:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:55,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:55,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639494618] [2022-12-14 10:57:55,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639494618] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:55,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:55,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:57:55,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826550078] [2022-12-14 10:57:55,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:55,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:55,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:55,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:55,541 INFO L87 Difference]: Start difference. First operand 486 states and 1474 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) [2022-12-14 10:57:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:55,639 INFO L93 Difference]: Finished difference Result 730 states and 2213 transitions. [2022-12-14 10:57:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:55,640 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 [2022-12-14 10:57:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:55,647 INFO L225 Difference]: With dead ends: 730 [2022-12-14 10:57:55,647 INFO L226 Difference]: Without dead ends: 730 [2022-12-14 10:57:55,648 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 [2022-12-14 10:57:55,648 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:55,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 4 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-12-14 10:57:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 700. [2022-12-14 10:57:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 664 states have (on average 3.2846385542168677) internal successors, (2181), 699 states have internal predecessors, (2181), 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) [2022-12-14 10:57:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 2181 transitions. [2022-12-14 10:57:55,665 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 2181 transitions. Word has length 5 [2022-12-14 10:57:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:55,665 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 2181 transitions. [2022-12-14 10:57:55,666 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) [2022-12-14 10:57:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 2181 transitions. [2022-12-14 10:57:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:57:55,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:55,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:57:55,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:57:55,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash 634841935, now seen corresponding path program 1 times [2022-12-14 10:57:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:55,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218527761] [2022-12-14 10:57:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:55,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218527761] [2022-12-14 10:57:55,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218527761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:55,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:55,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:57:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433214208] [2022-12-14 10:57:55,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:55,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:55,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:55,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:55,760 INFO L87 Difference]: Start difference. First operand 700 states and 2181 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) [2022-12-14 10:57:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:55,813 INFO L93 Difference]: Finished difference Result 594 states and 1858 transitions. [2022-12-14 10:57:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:55,814 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 [2022-12-14 10:57:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:55,817 INFO L225 Difference]: With dead ends: 594 [2022-12-14 10:57:55,818 INFO L226 Difference]: Without dead ends: 594 [2022-12-14 10:57:55,818 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 [2022-12-14 10:57:55,819 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:55,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-12-14 10:57:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-12-14 10:57:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 576 states have (on average 3.2256944444444446) internal successors, (1858), 593 states have internal predecessors, (1858), 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) [2022-12-14 10:57:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1858 transitions. [2022-12-14 10:57:55,840 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1858 transitions. Word has length 5 [2022-12-14 10:57:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 1858 transitions. [2022-12-14 10:57:55,841 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) [2022-12-14 10:57:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1858 transitions. [2022-12-14 10:57:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:57:55,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:55,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:57:55,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:57:55,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 634875466, now seen corresponding path program 1 times [2022-12-14 10:57:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:55,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518071690] [2022-12-14 10:57:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:55,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518071690] [2022-12-14 10:57:55,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518071690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:55,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:55,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:57:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245549080] [2022-12-14 10:57:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:55,885 INFO L87 Difference]: Start difference. First operand 594 states and 1858 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) [2022-12-14 10:57:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:55,943 INFO L93 Difference]: Finished difference Result 462 states and 1397 transitions. [2022-12-14 10:57:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:55,943 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 [2022-12-14 10:57:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:55,945 INFO L225 Difference]: With dead ends: 462 [2022-12-14 10:57:55,945 INFO L226 Difference]: Without dead ends: 462 [2022-12-14 10:57:55,945 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 [2022-12-14 10:57:55,946 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:55,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-12-14 10:57:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2022-12-14 10:57:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 450 states have (on average 3.1044444444444443) internal successors, (1397), 461 states have internal predecessors, (1397), 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) [2022-12-14 10:57:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1397 transitions. [2022-12-14 10:57:55,956 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1397 transitions. Word has length 5 [2022-12-14 10:57:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:55,956 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 1397 transitions. [2022-12-14 10:57:55,956 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) [2022-12-14 10:57:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1397 transitions. [2022-12-14 10:57:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:57:55,957 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:55,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:57:55,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:57:55,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash 634875468, now seen corresponding path program 1 times [2022-12-14 10:57:55,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851583983] [2022-12-14 10:57:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:56,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851583983] [2022-12-14 10:57:56,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851583983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:56,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:56,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:57:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423422705] [2022-12-14 10:57:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:56,011 INFO L87 Difference]: Start difference. First operand 462 states and 1397 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-12-14 10:57:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:56,056 INFO L93 Difference]: Finished difference Result 330 states and 936 transitions. [2022-12-14 10:57:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:56,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-12-14 10:57:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:56,059 INFO L225 Difference]: With dead ends: 330 [2022-12-14 10:57:56,059 INFO L226 Difference]: Without dead ends: 330 [2022-12-14 10:57:56,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:56,060 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:56,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-12-14 10:57:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-12-14 10:57:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 324 states have (on average 2.888888888888889) internal successors, (936), 329 states have internal predecessors, (936), 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) [2022-12-14 10:57:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 936 transitions. [2022-12-14 10:57:56,071 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 936 transitions. Word has length 5 [2022-12-14 10:57:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:56,071 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 936 transitions. [2022-12-14 10:57:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-12-14 10:57:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 936 transitions. [2022-12-14 10:57:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:57:56,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:56,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:56,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:57:56,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1460208107, now seen corresponding path program 1 times [2022-12-14 10:57:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:56,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431109123] [2022-12-14 10:57:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:56,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:56,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431109123] [2022-12-14 10:57:56,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431109123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:56,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:56,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:57:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771812514] [2022-12-14 10:57:56,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:56,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:56,140 INFO L87 Difference]: Start difference. First operand 330 states and 936 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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) [2022-12-14 10:57:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:56,212 INFO L93 Difference]: Finished difference Result 514 states and 1429 transitions. [2022-12-14 10:57:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 [2022-12-14 10:57:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:56,216 INFO L225 Difference]: With dead ends: 514 [2022-12-14 10:57:56,216 INFO L226 Difference]: Without dead ends: 506 [2022-12-14 10:57:56,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:56,217 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:56,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-12-14 10:57:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 452. [2022-12-14 10:57:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 445 states have (on average 2.912359550561798) internal successors, (1296), 451 states have internal predecessors, (1296), 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) [2022-12-14 10:57:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1296 transitions. [2022-12-14 10:57:56,232 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1296 transitions. Word has length 8 [2022-12-14 10:57:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1296 transitions. [2022-12-14 10:57:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2022-12-14 10:57:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1296 transitions. [2022-12-14 10:57:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:57:56,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:56,234 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:56,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:57:56,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash 232066842, now seen corresponding path program 1 times [2022-12-14 10:57:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906740607] [2022-12-14 10:57:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:56,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:57:56,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082284657] [2022-12-14 10:57:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:56,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:56,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:56,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:57:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:56,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:57:56,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:56,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:56,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906740607] [2022-12-14 10:57:56,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:57:56,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082284657] [2022-12-14 10:57:56,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082284657] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 10:57:56,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:57:56,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-12-14 10:57:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981770268] [2022-12-14 10:57:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:56,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:56,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:56,389 INFO L87 Difference]: Start difference. First operand 452 states and 1296 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2022-12-14 10:57:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:56,467 INFO L93 Difference]: Finished difference Result 390 states and 1033 transitions. [2022-12-14 10:57:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:56,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2022-12-14 10:57:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:56,469 INFO L225 Difference]: With dead ends: 390 [2022-12-14 10:57:56,470 INFO L226 Difference]: Without dead ends: 362 [2022-12-14 10:57:56,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:56,470 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-12-14 10:57:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 322. [2022-12-14 10:57:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 315 states have (on average 2.7746031746031745) internal successors, (874), 321 states have internal predecessors, (874), 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) [2022-12-14 10:57:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 874 transitions. [2022-12-14 10:57:56,481 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 874 transitions. Word has length 11 [2022-12-14 10:57:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:56,482 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 874 transitions. [2022-12-14 10:57:56,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2022-12-14 10:57:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 874 transitions. [2022-12-14 10:57:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:57:56,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:56,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:56,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:57:56,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:56,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1091595424, now seen corresponding path program 1 times [2022-12-14 10:57:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:56,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932677021] [2022-12-14 10:57:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:56,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932677021] [2022-12-14 10:57:56,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932677021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:56,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:56,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:57:56,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756608024] [2022-12-14 10:57:56,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:56,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:56,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:56,876 INFO L87 Difference]: Start difference. First operand 322 states and 874 transitions. Second operand has 3 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) [2022-12-14 10:57:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:56,946 INFO L93 Difference]: Finished difference Result 232 states and 565 transitions. [2022-12-14 10:57:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-12-14 10:57:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:56,948 INFO L225 Difference]: With dead ends: 232 [2022-12-14 10:57:56,948 INFO L226 Difference]: Without dead ends: 214 [2022-12-14 10:57:56,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:56,949 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:56,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-12-14 10:57:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2022-12-14 10:57:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 2.5238095238095237) internal successors, (530), 213 states have internal predecessors, (530), 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) [2022-12-14 10:57:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 530 transitions. [2022-12-14 10:57:56,957 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 530 transitions. Word has length 12 [2022-12-14 10:57:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:56,957 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 530 transitions. [2022-12-14 10:57:56,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-14 10:57:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 530 transitions. [2022-12-14 10:57:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:57:56,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:56,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:56,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:57:56,959 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:56,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash 262972539, now seen corresponding path program 1 times [2022-12-14 10:57:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:56,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110460509] [2022-12-14 10:57:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:56,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:57,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:57,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110460509] [2022-12-14 10:57:57,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110460509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:57,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:57,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:57:57,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402216476] [2022-12-14 10:57:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:57,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:57,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:57,009 INFO L87 Difference]: Start difference. First operand 214 states and 530 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:57,083 INFO L93 Difference]: Finished difference Result 258 states and 629 transitions. [2022-12-14 10:57:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 10:57:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:57,085 INFO L225 Difference]: With dead ends: 258 [2022-12-14 10:57:57,085 INFO L226 Difference]: Without dead ends: 258 [2022-12-14 10:57:57,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:57,086 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:57,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-12-14 10:57:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 220. [2022-12-14 10:57:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 216 states have (on average 2.513888888888889) internal successors, (543), 219 states have internal predecessors, (543), 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) [2022-12-14 10:57:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 543 transitions. [2022-12-14 10:57:57,094 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 543 transitions. Word has length 13 [2022-12-14 10:57:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:57,095 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 543 transitions. [2022-12-14 10:57:57,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 543 transitions. [2022-12-14 10:57:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:57:57,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:57,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:57:57,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:57,096 INFO L85 PathProgramCache]: Analyzing trace with hash -637512988, now seen corresponding path program 1 times [2022-12-14 10:57:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:57,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324089391] [2022-12-14 10:57:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:57,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:57,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324089391] [2022-12-14 10:57:57,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324089391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:57,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:57,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:57:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765826000] [2022-12-14 10:57:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:57,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:57,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:57,292 INFO L87 Difference]: Start difference. First operand 220 states and 543 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:57,375 INFO L93 Difference]: Finished difference Result 198 states and 458 transitions. [2022-12-14 10:57:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:57,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 10:57:57,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:57,376 INFO L225 Difference]: With dead ends: 198 [2022-12-14 10:57:57,376 INFO L226 Difference]: Without dead ends: 198 [2022-12-14 10:57:57,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:57:57,377 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:57,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-14 10:57:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 170. [2022-12-14 10:57:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 2.4096385542168677) internal successors, (400), 169 states have internal predecessors, (400), 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) [2022-12-14 10:57:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 400 transitions. [2022-12-14 10:57:57,382 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 400 transitions. Word has length 13 [2022-12-14 10:57:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:57,382 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 400 transitions. [2022-12-14 10:57:57,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 400 transitions. [2022-12-14 10:57:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:57:57,383 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:57,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:57,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:57:57,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash 433337012, now seen corresponding path program 1 times [2022-12-14 10:57:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:57,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898349631] [2022-12-14 10:57:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:57,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:57:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107577836] [2022-12-14 10:57:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:57,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:57,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:57:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 10:57:57,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:57,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:57,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898349631] [2022-12-14 10:57:57,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:57:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107577836] [2022-12-14 10:57:57,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107577836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:57,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:57,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:57:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330299206] [2022-12-14 10:57:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:57,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:57,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:57,633 INFO L87 Difference]: Start difference. First operand 170 states and 400 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-12-14 10:57:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:57,752 INFO L93 Difference]: Finished difference Result 292 states and 684 transitions. [2022-12-14 10:57:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2022-12-14 10:57:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:57,755 INFO L225 Difference]: With dead ends: 292 [2022-12-14 10:57:57,755 INFO L226 Difference]: Without dead ends: 292 [2022-12-14 10:57:57,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:57,756 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:57,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-12-14 10:57:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 206. [2022-12-14 10:57:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 2.5396039603960396) internal successors, (513), 205 states have internal predecessors, (513), 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) [2022-12-14 10:57:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 513 transitions. [2022-12-14 10:57:57,761 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 513 transitions. Word has length 14 [2022-12-14 10:57:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:57,761 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 513 transitions. [2022-12-14 10:57:57,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-12-14 10:57:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 513 transitions. [2022-12-14 10:57:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:57:57,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:57,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:57,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:57:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:57,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash -350426920, now seen corresponding path program 1 times [2022-12-14 10:57:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:57,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912051757] [2022-12-14 10:57:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:58,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912051757] [2022-12-14 10:57:58,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912051757] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:57:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32239088] [2022-12-14 10:57:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:58,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:58,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:57:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:58,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:57:58,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:57:58,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:58,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32239088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:58,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:57:58,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 10:57:58,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986975041] [2022-12-14 10:57:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:58,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:57:58,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:57:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:58,099 INFO L87 Difference]: Start difference. First operand 206 states and 513 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:58,168 INFO L93 Difference]: Finished difference Result 288 states and 697 transitions. [2022-12-14 10:57:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:57:58,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 10:57:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:58,171 INFO L225 Difference]: With dead ends: 288 [2022-12-14 10:57:58,171 INFO L226 Difference]: Without dead ends: 288 [2022-12-14 10:57:58,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:57:58,172 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:58,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-12-14 10:57:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 234. [2022-12-14 10:57:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 2.508695652173913) internal successors, (577), 233 states have internal predecessors, (577), 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) [2022-12-14 10:57:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 577 transitions. [2022-12-14 10:57:58,182 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 577 transitions. Word has length 15 [2022-12-14 10:57:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:58,182 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 577 transitions. [2022-12-14 10:57:58,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 577 transitions. [2022-12-14 10:57:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:57:58,183 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:58,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:58,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:57:58,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 10:57:58,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash 548546133, now seen corresponding path program 1 times [2022-12-14 10:57:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:58,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104804117] [2022-12-14 10:57:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:58,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:57:58,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308511955] [2022-12-14 10:57:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:58,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:58,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:58,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:57:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:57:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:58,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:58,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104804117] [2022-12-14 10:57:58,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:57:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308511955] [2022-12-14 10:57:58,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308511955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:58,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:58,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:57:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448394749] [2022-12-14 10:57:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:57:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:57:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:58,747 INFO L87 Difference]: Start difference. First operand 234 states and 577 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:58,844 INFO L93 Difference]: Finished difference Result 270 states and 618 transitions. [2022-12-14 10:57:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:57:58,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 10:57:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:58,846 INFO L225 Difference]: With dead ends: 270 [2022-12-14 10:57:58,846 INFO L226 Difference]: Without dead ends: 270 [2022-12-14 10:57:58,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:57:58,847 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:58,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:57:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-12-14 10:57:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2022-12-14 10:57:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 220 states have (on average 2.4272727272727272) internal successors, (534), 223 states have internal predecessors, (534), 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) [2022-12-14 10:57:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 534 transitions. [2022-12-14 10:57:58,865 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 534 transitions. Word has length 15 [2022-12-14 10:57:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:58,866 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 534 transitions. [2022-12-14 10:57:58,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 534 transitions. [2022-12-14 10:57:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:57:58,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:58,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:58,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:57:59,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 10:57:59,068 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:57:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash -174938691, now seen corresponding path program 1 times [2022-12-14 10:57:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:59,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453106509] [2022-12-14 10:57:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:59,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:59,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:57:59,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891055596] [2022-12-14 10:57:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:59,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:59,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:57:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:59,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 10:57:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:59,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-12-14 10:57:59,306 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 10:57:59,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 10:57:59,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-14 10:57:59,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-14 10:57:59,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-12-14 10:57:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:57:59,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:57:59,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:59,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453106509] [2022-12-14 10:57:59,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:57:59,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891055596] [2022-12-14 10:57:59,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891055596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:57:59,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:57:59,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:57:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368969301] [2022-12-14 10:57:59,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:57:59,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:57:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:57:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:57:59,634 INFO L87 Difference]: Start difference. First operand 224 states and 534 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:59,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:59,986 INFO L93 Difference]: Finished difference Result 382 states and 887 transitions. [2022-12-14 10:57:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:57:59,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 10:57:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:59,989 INFO L225 Difference]: With dead ends: 382 [2022-12-14 10:57:59,989 INFO L226 Difference]: Without dead ends: 382 [2022-12-14 10:57:59,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:57:59,990 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 87 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:59,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 14 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:57:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-14 10:57:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 242. [2022-12-14 10:57:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 2.3949579831932772) internal successors, (570), 241 states have internal predecessors, (570), 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) [2022-12-14 10:57:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 570 transitions. [2022-12-14 10:57:59,998 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 570 transitions. Word has length 16 [2022-12-14 10:57:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:59,999 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 570 transitions. [2022-12-14 10:57:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:57:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 570 transitions. [2022-12-14 10:57:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:58:00,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:00,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:00,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:58:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:00,201 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:58:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash 599672810, now seen corresponding path program 1 times [2022-12-14 10:58:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:00,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581108023] [2022-12-14 10:58:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:58:00,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:58:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581108023] [2022-12-14 10:58:00,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581108023] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:58:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188787837] [2022-12-14 10:58:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:00,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:00,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:58:00,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:58:00,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:58:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:00,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:58:00,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:58:00,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:58:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:58:00,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188787837] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:58:00,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1689929050] [2022-12-14 10:58:00,487 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 10:58:00,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:58:00,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 10:58:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627794257] [2022-12-14 10:58:00,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:58:00,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:58:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:58:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:58:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:58:00,490 INFO L87 Difference]: Start difference. First operand 242 states and 570 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-12-14 10:58:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:00,643 INFO L93 Difference]: Finished difference Result 494 states and 1116 transitions. [2022-12-14 10:58:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:58:00,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 10:58:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:00,645 INFO L225 Difference]: With dead ends: 494 [2022-12-14 10:58:00,645 INFO L226 Difference]: Without dead ends: 494 [2022-12-14 10:58:00,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:58:00,646 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:00,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 9 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:58:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-12-14 10:58:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 480. [2022-12-14 10:58:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 474 states have (on average 2.331223628691983) internal successors, (1105), 479 states have internal predecessors, (1105), 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) [2022-12-14 10:58:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1105 transitions. [2022-12-14 10:58:00,658 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1105 transitions. Word has length 17 [2022-12-14 10:58:00,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:00,659 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1105 transitions. [2022-12-14 10:58:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-12-14 10:58:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1105 transitions. [2022-12-14 10:58:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:58:00,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:00,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:00,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 10:58:00,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 10:58:00,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:58:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 872712619, now seen corresponding path program 1 times [2022-12-14 10:58:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:00,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057954607] [2022-12-14 10:58:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:00,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:58:00,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556961161] [2022-12-14 10:58:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:00,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:00,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:58:00,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:58:00,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:58:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:58:00,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:58:00,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:58:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:58:00,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:58:00,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:58:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057954607] [2022-12-14 10:58:00,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:58:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556961161] [2022-12-14 10:58:00,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556961161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:58:00,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:58:00,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:58:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987619429] [2022-12-14 10:58:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:58:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:58:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:58:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:58:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:58:00,984 INFO L87 Difference]: Start difference. First operand 480 states and 1105 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 10:58:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:01,033 INFO L93 Difference]: Finished difference Result 556 states and 1275 transitions. [2022-12-14 10:58:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:58:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-12-14 10:58:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:01,036 INFO L225 Difference]: With dead ends: 556 [2022-12-14 10:58:01,036 INFO L226 Difference]: Without dead ends: 534 [2022-12-14 10:58:01,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:58:01,037 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:01,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:58:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-14 10:58:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 458. [2022-12-14 10:58:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 452 states have (on average 2.3584070796460175) internal successors, (1066), 457 states have internal predecessors, (1066), 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) [2022-12-14 10:58:01,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1066 transitions. [2022-12-14 10:58:01,049 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1066 transitions. Word has length 18 [2022-12-14 10:58:01,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:01,049 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 1066 transitions. [2022-12-14 10:58:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 10:58:01,049 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1066 transitions. [2022-12-14 10:58:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:58:01,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:01,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:01,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:58:01,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 10:58:01,251 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 10:58:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1003200563, now seen corresponding path program 2 times [2022-12-14 10:58:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:01,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541482923] [2022-12-14 10:58:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:01,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:01,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:58:01,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570419300] [2022-12-14 10:58:01,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:58:01,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:01,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:58:01,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:58:01,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:58:01,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 10:58:01,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-14 10:58:01,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:58:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:58:01,617 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:58:01,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:58:01,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2022-12-14 10:58:01,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-12-14 10:58:01,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-12-14 10:58:01,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-12-14 10:58:01,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-12-14 10:58:01,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-12-14 10:58:01,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-12-14 10:58:01,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (13 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-12-14 10:58:01,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-12-14 10:58:01,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining) [2022-12-14 10:58:01,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:58:01,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:01,828 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:01,841 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 10:58:01,842 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:58:01,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:58:01 BasicIcfg [2022-12-14 10:58:01,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:58:01,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:58:01,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:58:01,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:58:01,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:33" (3/4) ... [2022-12-14 10:58:01,887 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:58:01,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:58:01,888 INFO L158 Benchmark]: Toolchain (without parser) took 29061.84ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 107.2MB in the beginning and 45.0MB in the end (delta: 62.2MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB. [2022-12-14 10:58:01,888 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:58:01,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.73ms. Allocated memory is still 151.0MB. Free memory was 107.2MB in the beginning and 86.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 10:58:01,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.37ms. Allocated memory is still 151.0MB. Free memory was 86.7MB in the beginning and 84.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:58:01,888 INFO L158 Benchmark]: Boogie Preprocessor took 21.09ms. Allocated memory is still 151.0MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:58:01,889 INFO L158 Benchmark]: RCFGBuilder took 427.22ms. Allocated memory is still 151.0MB. Free memory was 82.5MB in the beginning and 63.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 10:58:01,889 INFO L158 Benchmark]: TraceAbstraction took 28263.45ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 62.8MB in the beginning and 45.0MB in the end (delta: 17.8MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2022-12-14 10:58:01,889 INFO L158 Benchmark]: Witness Printer took 2.34ms. Allocated memory is still 182.5MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:58:01,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.73ms. Allocated memory is still 151.0MB. Free memory was 107.2MB in the beginning and 86.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.37ms. Allocated memory is still 151.0MB. Free memory was 86.7MB in the beginning and 84.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.09ms. Allocated memory is still 151.0MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.22ms. Allocated memory is still 151.0MB. Free memory was 82.5MB in the beginning and 63.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 28263.45ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 62.8MB in the beginning and 45.0MB in the end (delta: 17.8MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Witness Printer took 2.34ms. Allocated memory is still 182.5MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.7s, 163 PlacesBefore, 47 PlacesAfterwards, 166 TransitionsBefore, 48 TransitionsAfterwards, 5240 CoEnabledTransitionPairs, 8 FixpointIterations, 64 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 2 ChoiceCompositions, 179 TotalNumberOfCompositions, 12438 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8477, independent: 8194, independent conditional: 0, independent unconditional: 8194, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3840, independent: 3778, independent conditional: 0, independent unconditional: 3778, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3840, independent: 3712, independent conditional: 0, independent unconditional: 3712, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 128, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13176, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 12874, unknown conditional: 0, unknown unconditional: 12874] ], Cache Queries: [ total: 8477, independent: 4416, independent conditional: 0, independent unconditional: 4416, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 3860, unknown conditional: 0, unknown unconditional: 3860] , Statistics on independence cache: Total cache size (in pairs): 367, Positive cache size: 346, Positive conditional cache size: 0, Positive unconditional cache size: 346, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 2, Unknown conditional cache size: 0, Unknown unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 746]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 746. Possible FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=1, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=1, send=0] [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 233 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 28.1s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 573 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 573 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1266 IncrementalHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 38 mSDtfsCounter, 1266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=700occurred in iteration=4, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 606 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 217 ConstructedInterpolants, 9 QuantifiedInterpolants, 1291 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1618 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 22 InterpolantComputations, 17 PerfectInterpolantSequences, 7/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:58:01,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- 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-2329fc7 [2022-12-14 10:58:03,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:58:03,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:58:03,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:58:03,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:58:03,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:58:03,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:58:03,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:58:03,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:58:03,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:58:03,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:58:03,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:58:03,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:58:03,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:58:03,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:58:03,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:58:03,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:58:03,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:58:03,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:58:03,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:58:03,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:58:03,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:58:03,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:58:03,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:58:03,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:58:03,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:58:03,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:58:03,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:58:03,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:58:03,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:58:03,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:58:03,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:58:03,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:58:03,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:58:03,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:58:03,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:58:03,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:58:03,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:58:03,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:58:03,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:58:03,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:58:03,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:58:03,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:58:03,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:58:03,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:58:03,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:58:03,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:58:03,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:58:03,665 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:58:03,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:58:03,665 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:58:03,666 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:58:03,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:58:03,666 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:58:03,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:58:03,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:58:03,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:58:03,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:58:03,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:58:03,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:58:03,668 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:58:03,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:58:03,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:58:03,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:58:03,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:58:03,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:58:03,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:58:03,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:58:03,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:58:03,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:58:03,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:58:03,670 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:58:03,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:58:03,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:58:03,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:58:03,671 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2022-12-14 10:58:03,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:58:03,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:58:03,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:58:03,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:58:03,949 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:58:03,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-14 10:58:06,500 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:58:06,690 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:58:06,691 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-14 10:58:06,700 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data/061f47a3d/15095787efad41bca07f6f0be19e8b42/FLAGe46498fa1 [2022-12-14 10:58:07,053 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/data/061f47a3d/15095787efad41bca07f6f0be19e8b42 [2022-12-14 10:58:07,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:58:07,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:58:07,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:58:07,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:58:07,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:58:07,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d82177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07, skipping insertion in model container [2022-12-14 10:58:07,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:58:07,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:58:07,293 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-14 10:58:07,300 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-14 10:58:07,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:58:07,316 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:58:07,341 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-14 10:58:07,344 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_8745a95d-b81e-4eb8-8bc0-27294529bfac/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-14 10:58:07,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:58:07,373 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:58:07,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07 WrapperNode [2022-12-14 10:58:07,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:58:07,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:58:07,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:58:07,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:58:07,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,414 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2022-12-14 10:58:07,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:58:07,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:58:07,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:58:07,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:58:07,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:58:07,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:58:07,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:58:07,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:58:07,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (1/1) ... [2022-12-14 10:58:07,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:58:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:58:07,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:58:07,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:58:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 10:58:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:58:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-14 10:58:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-14 10:58:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-14 10:58:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:58:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-14 10:58:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:58:07,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:58:07,509 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:58:07,633 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:58:07,635 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:58:07,967 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:58:07,975 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:58:07,975 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 10:58:07,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:07 BoogieIcfgContainer [2022-12-14 10:58:07,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:58:07,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:58:07,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:58:07,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:58:07,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:58:07" (1/3) ... [2022-12-14 10:58:07,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72208385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:58:07, skipping insertion in model container [2022-12-14 10:58:07,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:07" (2/3) ... [2022-12-14 10:58:07,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72208385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:58:07, skipping insertion in model container [2022-12-14 10:58:07,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:07" (3/3) ... [2022-12-14 10:58:07,983 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-12-14 10:58:07,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:58:07,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-14 10:58:07,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:58:08,060 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 10:58:08,093 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:58:08,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 165 transitions, 346 flow [2022-12-14 10:58:08,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 165 transitions, 346 flow [2022-12-14 10:58:08,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2022-12-14 10:58:08,156 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2022-12-14 10:58:08,156 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 10:58:08,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 321 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-12-14 10:58:08,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 5032 [2022-12-14 10:58:59,309 WARN L233 SmtUtils]: Spent 24.03s on a formula simplification. DAG size of input: 51 DAG size of output: 49 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:59:35,279 WARN L233 SmtUtils]: Spent 31.90s on a formula simplification. DAG size of input: 51 DAG size of output: 49 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:59:43,669 WARN L233 SmtUtils]: Spent 8.39s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:00:07,281 WARN L233 SmtUtils]: Spent 15.53s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:00:15,096 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:00:39,252 WARN L233 SmtUtils]: Spent 24.15s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:00:49,678 WARN L233 SmtUtils]: Spent 10.43s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:01:10,268 INFO L134 LiptonReduction]: Checked pairs total: 10940 [2022-12-14 11:01:10,268 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-12-14 11:01:10,273 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 48 transitions, 112 flow [2022-12-14 11:01:10,306 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 626 states, 560 states have (on average 3.382142857142857) internal successors, (1894), 625 states have internal predecessors, (1894), 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) [2022-12-14 11:01:10,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:01:10,322 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;@2059bc20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:01:10,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-14 11:01:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 626 states, 560 states have (on average 3.382142857142857) internal successors, (1894), 625 states have internal predecessors, (1894), 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) [2022-12-14 11:01:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 11:01:10,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:10,329 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 11:01:10,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 663, now seen corresponding path program 1 times [2022-12-14 11:01:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:10,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6461465] [2022-12-14 11:01:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:10,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:10,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:10,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:10,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 11:01:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 11:01:10,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:10,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:10,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:10,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6461465] [2022-12-14 11:01:10,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6461465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:10,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:10,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 11:01:10,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057703689] [2022-12-14 11:01:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:01:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:10,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:01:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:01:10,426 INFO L87 Difference]: Start difference. First operand has 626 states, 560 states have (on average 3.382142857142857) internal successors, (1894), 625 states have internal predecessors, (1894), 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) [2022-12-14 11:01:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:10,604 INFO L93 Difference]: Finished difference Result 576 states and 1703 transitions. [2022-12-14 11:01:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:01:10,606 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 [2022-12-14 11:01:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:10,624 INFO L225 Difference]: With dead ends: 576 [2022-12-14 11:01:10,624 INFO L226 Difference]: Without dead ends: 576 [2022-12-14 11:01:10,624 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 [2022-12-14 11:01:10,627 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:10,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:01:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-12-14 11:01:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-12-14 11:01:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 526 states have (on average 3.2376425855513307) internal successors, (1703), 575 states have internal predecessors, (1703), 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) [2022-12-14 11:01:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1703 transitions. [2022-12-14 11:01:10,674 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1703 transitions. Word has length 1 [2022-12-14 11:01:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:10,675 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 1703 transitions. [2022-12-14 11:01:10,675 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) [2022-12-14 11:01:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1703 transitions. [2022-12-14 11:01:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:01:10,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:10,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:01:10,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:10,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:10,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:10,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 653765, now seen corresponding path program 1 times [2022-12-14 11:01:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:10,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290038346] [2022-12-14 11:01:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:10,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:10,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:10,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 11:01:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:10,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:01:11,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:11,058 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:01:11,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-14 11:01:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:11,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:11,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:11,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290038346] [2022-12-14 11:01:11,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290038346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:11,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:11,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:01:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417421881] [2022-12-14 11:01:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:11,084 INFO L87 Difference]: Start difference. First operand 576 states and 1703 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) [2022-12-14 11:01:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:11,250 INFO L93 Difference]: Finished difference Result 554 states and 1655 transitions. [2022-12-14 11:01:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:11,251 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 [2022-12-14 11:01:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:11,254 INFO L225 Difference]: With dead ends: 554 [2022-12-14 11:01:11,254 INFO L226 Difference]: Without dead ends: 554 [2022-12-14 11:01:11,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:11,255 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:11,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-12-14 11:01:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2022-12-14 11:01:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 511 states have (on average 3.238747553816047) internal successors, (1655), 553 states have internal predecessors, (1655), 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) [2022-12-14 11:01:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1655 transitions. [2022-12-14 11:01:11,271 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1655 transitions. Word has length 3 [2022-12-14 11:01:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:11,271 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 1655 transitions. [2022-12-14 11:01:11,271 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) [2022-12-14 11:01:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1655 transitions. [2022-12-14 11:01:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:01:11,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:11,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:01:11,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 11:01:11,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:11,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash 653766, now seen corresponding path program 1 times [2022-12-14 11:01:11,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:11,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929185413] [2022-12-14 11:01:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:11,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:11,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:11,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:11,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 11:01:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:11,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:01:11,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:11,651 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:01:11,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-14 11:01:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:11,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:11,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929185413] [2022-12-14 11:01:11,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929185413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:11,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:11,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:01:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251323808] [2022-12-14 11:01:11,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:11,665 INFO L87 Difference]: Start difference. First operand 554 states and 1655 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) [2022-12-14 11:01:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:11,820 INFO L93 Difference]: Finished difference Result 532 states and 1607 transitions. [2022-12-14 11:01:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:11,821 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 [2022-12-14 11:01:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:11,824 INFO L225 Difference]: With dead ends: 532 [2022-12-14 11:01:11,824 INFO L226 Difference]: Without dead ends: 532 [2022-12-14 11:01:11,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:11,826 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:11,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:01:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-12-14 11:01:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-12-14 11:01:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 496 states have (on average 3.2399193548387095) internal successors, (1607), 531 states have internal predecessors, (1607), 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) [2022-12-14 11:01:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1607 transitions. [2022-12-14 11:01:11,846 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1607 transitions. Word has length 3 [2022-12-14 11:01:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:11,846 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 1607 transitions. [2022-12-14 11:01:11,846 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) [2022-12-14 11:01:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1607 transitions. [2022-12-14 11:01:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:01:11,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:11,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:01:11,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 11:01:12,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:12,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:12,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash 628281918, now seen corresponding path program 1 times [2022-12-14 11:01:12,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926689476] [2022-12-14 11:01:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:12,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:12,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:12,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:12,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 11:01:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:12,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:01:12,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:12,210 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:01:12,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-12-14 11:01:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:12,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:12,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:12,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926689476] [2022-12-14 11:01:12,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926689476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:12,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:12,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:01:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357763008] [2022-12-14 11:01:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:12,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:12,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:12,233 INFO L87 Difference]: Start difference. First operand 532 states and 1607 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) [2022-12-14 11:01:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:12,382 INFO L93 Difference]: Finished difference Result 411 states and 1200 transitions. [2022-12-14 11:01:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:12,383 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 [2022-12-14 11:01:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:12,384 INFO L225 Difference]: With dead ends: 411 [2022-12-14 11:01:12,384 INFO L226 Difference]: Without dead ends: 411 [2022-12-14 11:01:12,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:12,385 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:12,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:01:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-12-14 11:01:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2022-12-14 11:01:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 387 states have (on average 3.10077519379845) internal successors, (1200), 410 states have internal predecessors, (1200), 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) [2022-12-14 11:01:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1200 transitions. [2022-12-14 11:01:12,394 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1200 transitions. Word has length 5 [2022-12-14 11:01:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:12,395 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 1200 transitions. [2022-12-14 11:01:12,395 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) [2022-12-14 11:01:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1200 transitions. [2022-12-14 11:01:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:01:12,395 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:12,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:01:12,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 11:01:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:12,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 628281919, now seen corresponding path program 1 times [2022-12-14 11:01:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:12,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714954301] [2022-12-14 11:01:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:12,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:12,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:12,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:12,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 11:01:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:12,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:01:12,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:12,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:12,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:12,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714954301] [2022-12-14 11:01:12,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714954301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:12,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:12,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:01:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301422757] [2022-12-14 11:01:12,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:12,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:12,774 INFO L87 Difference]: Start difference. First operand 411 states and 1200 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) [2022-12-14 11:01:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:12,934 INFO L93 Difference]: Finished difference Result 290 states and 793 transitions. [2022-12-14 11:01:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:12,935 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 [2022-12-14 11:01:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:12,937 INFO L225 Difference]: With dead ends: 290 [2022-12-14 11:01:12,937 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 11:01:12,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:12,938 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:12,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 11:01:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2022-12-14 11:01:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 278 states have (on average 2.852517985611511) internal successors, (793), 289 states have internal predecessors, (793), 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) [2022-12-14 11:01:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 793 transitions. [2022-12-14 11:01:12,947 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 793 transitions. Word has length 5 [2022-12-14 11:01:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:12,948 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 793 transitions. [2022-12-14 11:01:12,948 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) [2022-12-14 11:01:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 793 transitions. [2022-12-14 11:01:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:01:12,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:12,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:01:12,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 11:01:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:13,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 628263882, now seen corresponding path program 1 times [2022-12-14 11:01:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:13,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221534786] [2022-12-14 11:01:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:13,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:13,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 11:01:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:13,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 11:01:13,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:13,273 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-12-14 11:01:13,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-12-14 11:01:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:13,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:13,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221534786] [2022-12-14 11:01:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221534786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:13,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:13,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:01:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848122835] [2022-12-14 11:01:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:13,376 INFO L87 Difference]: Start difference. First operand 290 states and 793 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) [2022-12-14 11:01:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:13,530 INFO L93 Difference]: Finished difference Result 244 states and 672 transitions. [2022-12-14 11:01:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:13,531 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 [2022-12-14 11:01:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:13,531 INFO L225 Difference]: With dead ends: 244 [2022-12-14 11:01:13,531 INFO L226 Difference]: Without dead ends: 244 [2022-12-14 11:01:13,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:13,532 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:13,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-12-14 11:01:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-12-14 11:01:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 238 states have (on average 2.823529411764706) internal successors, (672), 243 states have internal predecessors, (672), 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) [2022-12-14 11:01:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 672 transitions. [2022-12-14 11:01:13,537 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 672 transitions. Word has length 5 [2022-12-14 11:01:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:13,537 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 672 transitions. [2022-12-14 11:01:13,537 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) [2022-12-14 11:01:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 672 transitions. [2022-12-14 11:01:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:01:13,538 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:13,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:01:13,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 11:01:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:13,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 628263883, now seen corresponding path program 1 times [2022-12-14 11:01:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:13,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456280588] [2022-12-14 11:01:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:13,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:13,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:13,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:13,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 11:01:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:13,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:01:13,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:13,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,861 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 11:01:13,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-12-14 11:01:13,880 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 11:01:13,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 11:01:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:14,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:14,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456280588] [2022-12-14 11:01:14,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456280588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:14,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:14,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:01:14,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267069430] [2022-12-14 11:01:14,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:14,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:14,014 INFO L87 Difference]: Start difference. First operand 244 states and 672 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) [2022-12-14 11:01:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:14,308 INFO L93 Difference]: Finished difference Result 384 states and 1054 transitions. [2022-12-14 11:01:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:14,309 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 [2022-12-14 11:01:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:14,311 INFO L225 Difference]: With dead ends: 384 [2022-12-14 11:01:14,311 INFO L226 Difference]: Without dead ends: 384 [2022-12-14 11:01:14,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:14,311 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:14,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:01:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-12-14 11:01:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 370. [2022-12-14 11:01:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 364 states have (on average 2.857142857142857) internal successors, (1040), 369 states have internal predecessors, (1040), 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) [2022-12-14 11:01:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1040 transitions. [2022-12-14 11:01:14,319 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1040 transitions. Word has length 5 [2022-12-14 11:01:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:14,319 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 1040 transitions. [2022-12-14 11:01:14,319 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) [2022-12-14 11:01:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1040 transitions. [2022-12-14 11:01:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:01:14,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:14,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:14,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 11:01:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:14,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -320165188, now seen corresponding path program 1 times [2022-12-14 11:01:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:14,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718449854] [2022-12-14 11:01:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:14,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:14,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:14,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:14,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 11:01:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:14,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:01:14,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:14,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:14,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:14,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718449854] [2022-12-14 11:01:14,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718449854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:14,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:14,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:01:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688423333] [2022-12-14 11:01:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:14,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:14,727 INFO L87 Difference]: Start difference. First operand 370 states and 1040 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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) [2022-12-14 11:01:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:14,959 INFO L93 Difference]: Finished difference Result 578 states and 1592 transitions. [2022-12-14 11:01:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 [2022-12-14 11:01:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:14,961 INFO L225 Difference]: With dead ends: 578 [2022-12-14 11:01:14,961 INFO L226 Difference]: Without dead ends: 570 [2022-12-14 11:01:14,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:14,962 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:14,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-12-14 11:01:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 512. [2022-12-14 11:01:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 505 states have (on average 2.877227722772277) internal successors, (1453), 511 states have internal predecessors, (1453), 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) [2022-12-14 11:01:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1453 transitions. [2022-12-14 11:01:14,972 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1453 transitions. Word has length 8 [2022-12-14 11:01:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:14,972 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 1453 transitions. [2022-12-14 11:01:14,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2022-12-14 11:01:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1453 transitions. [2022-12-14 11:01:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:01:14,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:14,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:14,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 11:01:15,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:15,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1427287709, now seen corresponding path program 1 times [2022-12-14 11:01:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:15,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123732907] [2022-12-14 11:01:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:15,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:15,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:15,176 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:15,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 11:01:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:01:15,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:15,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-14 11:01:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:15,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:15,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:15,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123732907] [2022-12-14 11:01:15,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123732907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:15,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:15,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:01:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222317648] [2022-12-14 11:01:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:15,258 INFO L87 Difference]: Start difference. First operand 512 states and 1453 transitions. Second operand has 3 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) [2022-12-14 11:01:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:15,464 INFO L93 Difference]: Finished difference Result 306 states and 772 transitions. [2022-12-14 11:01:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-12-14 11:01:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:15,466 INFO L225 Difference]: With dead ends: 306 [2022-12-14 11:01:15,466 INFO L226 Difference]: Without dead ends: 296 [2022-12-14 11:01:15,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:15,467 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:15,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:15,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-12-14 11:01:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 252. [2022-12-14 11:01:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 2.592741935483871) internal successors, (643), 251 states have internal predecessors, (643), 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) [2022-12-14 11:01:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 643 transitions. [2022-12-14 11:01:15,474 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 643 transitions. Word has length 12 [2022-12-14 11:01:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:15,474 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 643 transitions. [2022-12-14 11:01:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-14 11:01:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 643 transitions. [2022-12-14 11:01:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:01:15,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:15,476 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:15,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 11:01:15,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:15,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2007142527, now seen corresponding path program 1 times [2022-12-14 11:01:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:15,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574017] [2022-12-14 11:01:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:15,683 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:15,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 11:01:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:15,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:01:15,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:15,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:15,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:15,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574017] [2022-12-14 11:01:15,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:15,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:15,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:01:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369087004] [2022-12-14 11:01:15,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:15,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:15,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:15,849 INFO L87 Difference]: Start difference. First operand 252 states and 643 transitions. Second operand has 3 states, 2 states have (on average 6.0) 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) [2022-12-14 11:01:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:16,055 INFO L93 Difference]: Finished difference Result 308 states and 764 transitions. [2022-12-14 11:01:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:16,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) 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 [2022-12-14 11:01:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:16,057 INFO L225 Difference]: With dead ends: 308 [2022-12-14 11:01:16,057 INFO L226 Difference]: Without dead ends: 292 [2022-12-14 11:01:16,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:16,058 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:16,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-12-14 11:01:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 254. [2022-12-14 11:01:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 2.58) internal successors, (645), 253 states have internal predecessors, (645), 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) [2022-12-14 11:01:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 645 transitions. [2022-12-14 11:01:16,062 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 645 transitions. Word has length 12 [2022-12-14 11:01:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:16,062 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 645 transitions. [2022-12-14 11:01:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) 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) [2022-12-14 11:01:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 645 transitions. [2022-12-14 11:01:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:01:16,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:16,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:16,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 11:01:16,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:16,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash -699973759, now seen corresponding path program 1 times [2022-12-14 11:01:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:16,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906876554] [2022-12-14 11:01:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:16,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:16,272 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:16,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 11:01:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:16,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:01:16,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:16,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:16,430 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:16,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906876554] [2022-12-14 11:01:16,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906876554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:16,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:16,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:01:16,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115795643] [2022-12-14 11:01:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:16,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:16,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:16,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:16,431 INFO L87 Difference]: Start difference. First operand 254 states and 645 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:16,685 INFO L93 Difference]: Finished difference Result 380 states and 951 transitions. [2022-12-14 11:01:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:16,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 11:01:16,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:16,688 INFO L225 Difference]: With dead ends: 380 [2022-12-14 11:01:16,688 INFO L226 Difference]: Without dead ends: 380 [2022-12-14 11:01:16,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:16,688 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:16,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:01:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-12-14 11:01:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 298. [2022-12-14 11:01:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 294 states have (on average 2.578231292517007) internal successors, (758), 297 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 758 transitions. [2022-12-14 11:01:16,694 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 758 transitions. Word has length 13 [2022-12-14 11:01:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:16,694 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 758 transitions. [2022-12-14 11:01:16,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 758 transitions. [2022-12-14 11:01:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:01:16,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:16,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:16,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:16,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:16,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2053667494, now seen corresponding path program 1 times [2022-12-14 11:01:16,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:16,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937484800] [2022-12-14 11:01:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:16,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:16,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:16,902 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:16,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 11:01:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:16,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:01:16,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:17,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:17,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:17,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937484800] [2022-12-14 11:01:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937484800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:17,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:01:17,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521766117] [2022-12-14 11:01:17,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:17,034 INFO L87 Difference]: Start difference. First operand 298 states and 758 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:17,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:17,210 INFO L93 Difference]: Finished difference Result 264 states and 638 transitions. [2022-12-14 11:01:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:17,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 11:01:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:17,212 INFO L225 Difference]: With dead ends: 264 [2022-12-14 11:01:17,212 INFO L226 Difference]: Without dead ends: 264 [2022-12-14 11:01:17,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:17,213 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:17,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-12-14 11:01:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 230. [2022-12-14 11:01:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 226 states have (on average 2.5) internal successors, (565), 229 states have internal predecessors, (565), 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) [2022-12-14 11:01:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 565 transitions. [2022-12-14 11:01:17,216 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 565 transitions. Word has length 13 [2022-12-14 11:01:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:17,217 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 565 transitions. [2022-12-14 11:01:17,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 565 transitions. [2022-12-14 11:01:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 11:01:17,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:17,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:17,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:17,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:17,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 274312890, now seen corresponding path program 1 times [2022-12-14 11:01:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:17,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402535438] [2022-12-14 11:01:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:17,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:17,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:17,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 11:01:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:17,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:01:17,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:17,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:17,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:17,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402535438] [2022-12-14 11:01:17,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402535438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:17,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:17,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:01:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947599209] [2022-12-14 11:01:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:17,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:01:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:01:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:01:17,682 INFO L87 Difference]: Start difference. First operand 230 states and 565 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-12-14 11:01:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:18,013 INFO L93 Difference]: Finished difference Result 368 states and 901 transitions. [2022-12-14 11:01:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:01:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2022-12-14 11:01:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:18,014 INFO L225 Difference]: With dead ends: 368 [2022-12-14 11:01:18,014 INFO L226 Difference]: Without dead ends: 368 [2022-12-14 11:01:18,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:01:18,015 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 51 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:18,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 9 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:01:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-12-14 11:01:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 272. [2022-12-14 11:01:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 2.6343283582089554) internal successors, (706), 271 states have internal predecessors, (706), 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) [2022-12-14 11:01:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 706 transitions. [2022-12-14 11:01:18,020 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 706 transitions. Word has length 14 [2022-12-14 11:01:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:18,020 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 706 transitions. [2022-12-14 11:01:18,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-12-14 11:01:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 706 transitions. [2022-12-14 11:01:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:01:18,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:18,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:18,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:18,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:18,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash 977534871, now seen corresponding path program 1 times [2022-12-14 11:01:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:18,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526309622] [2022-12-14 11:01:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:18,224 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:18,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 11:01:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:18,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:01:18,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:18,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:18,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526309622] [2022-12-14 11:01:18,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526309622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:18,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:18,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:01:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313385530] [2022-12-14 11:01:18,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:18,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:18,361 INFO L87 Difference]: Start difference. First operand 272 states and 706 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:18,597 INFO L93 Difference]: Finished difference Result 346 states and 875 transitions. [2022-12-14 11:01:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 11:01:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:18,600 INFO L225 Difference]: With dead ends: 346 [2022-12-14 11:01:18,600 INFO L226 Difference]: Without dead ends: 346 [2022-12-14 11:01:18,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:01:18,601 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:18,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:01:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-12-14 11:01:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 272. [2022-12-14 11:01:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 2.58955223880597) internal successors, (694), 271 states have internal predecessors, (694), 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) [2022-12-14 11:01:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 694 transitions. [2022-12-14 11:01:18,605 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 694 transitions. Word has length 15 [2022-12-14 11:01:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:18,605 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 694 transitions. [2022-12-14 11:01:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 694 transitions. [2022-12-14 11:01:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:01:18,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:18,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:18,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 11:01:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:18,807 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -86235249, now seen corresponding path program 1 times [2022-12-14 11:01:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:18,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697463887] [2022-12-14 11:01:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:18,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:18,813 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:18,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 11:01:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:18,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:01:18,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:19,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:19,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:19,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697463887] [2022-12-14 11:01:19,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697463887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:19,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:19,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:01:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61828948] [2022-12-14 11:01:19,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:19,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:01:19,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:01:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:01:19,330 INFO L87 Difference]: Start difference. First operand 272 states and 694 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:19,835 INFO L93 Difference]: Finished difference Result 320 states and 764 transitions. [2022-12-14 11:01:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:01:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 11:01:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:19,842 INFO L225 Difference]: With dead ends: 320 [2022-12-14 11:01:19,842 INFO L226 Difference]: Without dead ends: 320 [2022-12-14 11:01:19,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:01:19,842 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:19,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:01:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-12-14 11:01:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 254. [2022-12-14 11:01:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 2.5) internal successors, (625), 253 states have internal predecessors, (625), 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) [2022-12-14 11:01:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 625 transitions. [2022-12-14 11:01:19,847 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 625 transitions. Word has length 15 [2022-12-14 11:01:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:19,847 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 625 transitions. [2022-12-14 11:01:19,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 625 transitions. [2022-12-14 11:01:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:01:19,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:19,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:19,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-14 11:01:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:20,049 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1621675601, now seen corresponding path program 1 times [2022-12-14 11:01:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:20,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784460989] [2022-12-14 11:01:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:20,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:20,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:20,054 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:20,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 11:01:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:20,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:01:20,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:20,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-14 11:01:20,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-14 11:01:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:20,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:20,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784460989] [2022-12-14 11:01:20,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784460989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:20,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:20,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:01:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484822096] [2022-12-14 11:01:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:01:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:01:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:01:20,547 INFO L87 Difference]: Start difference. First operand 254 states and 625 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:21,307 INFO L93 Difference]: Finished difference Result 374 states and 885 transitions. [2022-12-14 11:01:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:01:21,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 11:01:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:21,311 INFO L225 Difference]: With dead ends: 374 [2022-12-14 11:01:21,311 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 11:01:21,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:01:21,312 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:21,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 34 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 11:01:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 11:01:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 298. [2022-12-14 11:01:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 294 states have (on average 2.4659863945578233) internal successors, (725), 297 states have internal predecessors, (725), 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) [2022-12-14 11:01:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 725 transitions. [2022-12-14 11:01:21,317 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 725 transitions. Word has length 16 [2022-12-14 11:01:21,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:21,317 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 725 transitions. [2022-12-14 11:01:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 725 transitions. [2022-12-14 11:01:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:01:21,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:21,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:21,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 11:01:21,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:21,519 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1044752357, now seen corresponding path program 2 times [2022-12-14 11:01:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:21,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150203248] [2022-12-14 11:01:21,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:01:21,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:21,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:21,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 11:01:21,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 11:01:21,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:01:21,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:01:21,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:21,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-14 11:01:21,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-14 11:01:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:21,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:21,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:21,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150203248] [2022-12-14 11:01:21,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150203248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:21,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:21,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:01:21,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713933010] [2022-12-14 11:01:21,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:21,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:01:21,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:01:21,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:01:21,948 INFO L87 Difference]: Start difference. First operand 298 states and 725 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:22,690 INFO L93 Difference]: Finished difference Result 424 states and 999 transitions. [2022-12-14 11:01:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:01:22,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 11:01:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:22,692 INFO L225 Difference]: With dead ends: 424 [2022-12-14 11:01:22,692 INFO L226 Difference]: Without dead ends: 424 [2022-12-14 11:01:22,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:01:22,693 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:22,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 33 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 11:01:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-12-14 11:01:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 294. [2022-12-14 11:01:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 290 states have (on average 2.4655172413793105) internal successors, (715), 293 states have internal predecessors, (715), 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) [2022-12-14 11:01:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 715 transitions. [2022-12-14 11:01:22,697 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 715 transitions. Word has length 16 [2022-12-14 11:01:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:22,698 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 715 transitions. [2022-12-14 11:01:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 715 transitions. [2022-12-14 11:01:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:01:22,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:22,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:22,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:22,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:22,900 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:22,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash -678453751, now seen corresponding path program 3 times [2022-12-14 11:01:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:22,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928134050] [2022-12-14 11:01:22,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:01:22,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:22,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:22,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:22,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 11:01:23,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 11:01:23,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:01:23,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:01:23,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:23,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-14 11:01:23,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-14 11:01:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:23,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:23,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928134050] [2022-12-14 11:01:23,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928134050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:23,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:23,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:01:23,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342578462] [2022-12-14 11:01:23,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:23,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:01:23,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:01:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:01:23,322 INFO L87 Difference]: Start difference. First operand 294 states and 715 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:24,116 INFO L93 Difference]: Finished difference Result 477 states and 1114 transitions. [2022-12-14 11:01:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:01:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 11:01:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:24,120 INFO L225 Difference]: With dead ends: 477 [2022-12-14 11:01:24,120 INFO L226 Difference]: Without dead ends: 477 [2022-12-14 11:01:24,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:01:24,120 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 75 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:24,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 35 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 11:01:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-12-14 11:01:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 317. [2022-12-14 11:01:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 313 states have (on average 2.4536741214057507) internal successors, (768), 316 states have internal predecessors, (768), 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) [2022-12-14 11:01:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 768 transitions. [2022-12-14 11:01:24,125 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 768 transitions. Word has length 16 [2022-12-14 11:01:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:24,125 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 768 transitions. [2022-12-14 11:01:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 768 transitions. [2022-12-14 11:01:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:01:24,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:24,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:24,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 11:01:24,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:24,327 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 400747525, now seen corresponding path program 4 times [2022-12-14 11:01:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755163406] [2022-12-14 11:01:24,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:01:24,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:24,333 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:24,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 11:01:24,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:01:24,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:01:24,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 11:01:24,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:24,546 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-12-14 11:01:24,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 11:01:24,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-14 11:01:24,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-12-14 11:01:24,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-14 11:01:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:24,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:24,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755163406] [2022-12-14 11:01:24,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755163406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:24,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:24,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:01:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337606979] [2022-12-14 11:01:24,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:24,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:01:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:01:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:01:24,851 INFO L87 Difference]: Start difference. First operand 317 states and 768 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:25,777 INFO L93 Difference]: Finished difference Result 466 states and 1088 transitions. [2022-12-14 11:01:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:01:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 11:01:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:25,780 INFO L225 Difference]: With dead ends: 466 [2022-12-14 11:01:25,780 INFO L226 Difference]: Without dead ends: 466 [2022-12-14 11:01:25,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:01:25,781 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 128 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:25,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 28 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 11:01:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-12-14 11:01:25,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 278. [2022-12-14 11:01:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 2.4671532846715327) internal successors, (676), 277 states have internal predecessors, (676), 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) [2022-12-14 11:01:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 676 transitions. [2022-12-14 11:01:25,785 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 676 transitions. Word has length 16 [2022-12-14 11:01:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:25,785 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 676 transitions. [2022-12-14 11:01:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:01:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 676 transitions. [2022-12-14 11:01:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 11:01:25,786 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:25,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:25,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:25,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:25,987 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 910847964, now seen corresponding path program 1 times [2022-12-14 11:01:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:25,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562540025] [2022-12-14 11:01:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:25,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:25,992 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:25,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 11:01:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:01:26,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:01:26,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:01:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:01:26,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:01:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562540025] [2022-12-14 11:01:26,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562540025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:01:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2042545237] [2022-12-14 11:01:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:26,134 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:01:26,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:01:26,135 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:01:26,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 11:01:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:26,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:01:26,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:01:26,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:01:26,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2042545237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:26,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:01:26,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 7 [2022-12-14 11:01:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603847661] [2022-12-14 11:01:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:26,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:01:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:01:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:01:26,261 INFO L87 Difference]: Start difference. First operand 278 states and 676 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-12-14 11:01:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:26,412 INFO L93 Difference]: Finished difference Result 264 states and 623 transitions. [2022-12-14 11:01:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:01:26,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-12-14 11:01:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:26,413 INFO L225 Difference]: With dead ends: 264 [2022-12-14 11:01:26,413 INFO L226 Difference]: Without dead ends: 264 [2022-12-14 11:01:26,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:01:26,413 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:26,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:01:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-12-14 11:01:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 250. [2022-12-14 11:01:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 2.4390243902439024) internal successors, (600), 249 states have internal predecessors, (600), 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) [2022-12-14 11:01:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 600 transitions. [2022-12-14 11:01:26,419 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 600 transitions. Word has length 18 [2022-12-14 11:01:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:26,419 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 600 transitions. [2022-12-14 11:01:26,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-12-14 11:01:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 600 transitions. [2022-12-14 11:01:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 11:01:26,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:26,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:26,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 11:01:26,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-12-14 11:01:26,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 11:01:26,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-14 11:01:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1110651959, now seen corresponding path program 1 times [2022-12-14 11:01:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:01:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156558011] [2022-12-14 11:01:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:26,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:01:26,828 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:01:26,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 11:01:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:01:27,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:01:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:01:27,163 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 11:01:27,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:01:27,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2022-12-14 11:01:27,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-12-14 11:01:27,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (13 of 23 remaining) [2022-12-14 11:01:27,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-12-14 11:01:27,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-12-14 11:01:27,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 23 remaining) [2022-12-14 11:01:27,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-12-14 11:01:27,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining) [2022-12-14 11:01:27,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-12-14 11:01:27,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:01:27,373 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:27,377 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 11:01:27,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:01:27,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:01:27 BasicIcfg [2022-12-14 11:01:27,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:01:27,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:01:27,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:01:27,402 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:01:27,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:07" (3/4) ... [2022-12-14 11:01:27,404 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:01:27,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:01:27,404 INFO L158 Benchmark]: Toolchain (without parser) took 200348.36ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 61.1MB in the beginning and 52.7MB in the end (delta: 8.4MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-12-14 11:01:27,405 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:01:27,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.42ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 39.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 11:01:27,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.08ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 39.3MB in the beginning and 86.8MB in the end (delta: -47.6MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-12-14 11:01:27,405 INFO L158 Benchmark]: Boogie Preprocessor took 37.25ms. Allocated memory is still 107.0MB. Free memory was 86.8MB in the beginning and 84.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:01:27,405 INFO L158 Benchmark]: RCFGBuilder took 524.78ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 63.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 11:01:27,406 INFO L158 Benchmark]: TraceAbstraction took 199422.58ms. Allocated memory is still 107.0MB. Free memory was 62.8MB in the beginning and 52.7MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:01:27,406 INFO L158 Benchmark]: Witness Printer took 2.45ms. Allocated memory is still 107.0MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:01:27,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.42ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 39.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.08ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 39.3MB in the beginning and 86.8MB in the end (delta: -47.6MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.25ms. Allocated memory is still 107.0MB. Free memory was 86.8MB in the beginning and 84.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.78ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 63.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 199422.58ms. Allocated memory is still 107.0MB. Free memory was 62.8MB in the beginning and 52.7MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 2.45ms. Allocated memory is still 107.0MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 182.2s, 162 PlacesBefore, 48 PlacesAfterwards, 165 TransitionsBefore, 48 TransitionsAfterwards, 5032 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 3 ChoiceCompositions, 176 TotalNumberOfCompositions, 10940 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7247, independent: 7002, independent conditional: 0, independent unconditional: 7002, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3499, independent: 3443, independent conditional: 0, independent unconditional: 3443, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3499, independent: 3385, independent conditional: 0, independent unconditional: 3385, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 114, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15667, independent: 170, independent conditional: 0, independent unconditional: 170, dependent: 467, dependent conditional: 0, dependent unconditional: 467, unknown: 15030, unknown conditional: 0, unknown unconditional: 15030] ], Cache Queries: [ total: 7247, independent: 3559, independent conditional: 0, independent unconditional: 3559, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 3517, unknown conditional: 0, unknown unconditional: 3517] , Statistics on independence cache: Total cache size (in pairs): 317, Positive cache size: 297, Positive conditional cache size: 0, Positive unconditional cache size: 297, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 2, Unknown conditional cache size: 0, Unknown unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 746]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 746. Possible FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={15:0}, id2={7:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={15:0}, id2={7:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=1, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 230 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 199.3s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 182.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 684 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 684 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2267 IncrementalHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 74 mSDtfsCounter, 2267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=626occurred in iteration=0, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 1074 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 247 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 225 ConstructedInterpolants, 8 QuantifiedInterpolants, 1805 SizeOfPredicates, 62 NumberOfNonLiveVariables, 2423 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 22 InterpolantComputations, 20 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 11:01:27,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8745a95d-b81e-4eb8-8bc0-27294529bfac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample