./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:38:16,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:38:16,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:38:16,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:38:16,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:38:16,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:38:16,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:38:16,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:38:16,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:38:16,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:38:16,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:38:16,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:38:16,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:38:16,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:38:16,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:38:16,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:38:16,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:38:16,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:38:16,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:38:16,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:38:16,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:38:16,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:38:16,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:38:16,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:38:16,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:38:16,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:38:16,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:38:16,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:38:16,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:38:16,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:38:16,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:38:16,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:38:16,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:38:16,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:38:16,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:38:16,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:38:16,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:38:16,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:38:16,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:38:16,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:38:16,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:38:16,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:38:16,892 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:38:16,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:38:16,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:38:16,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:38:16,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:38:16,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:38:16,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:38:16,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:38:16,896 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:38:16,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:38:16,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:38:16,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:38:16,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:38:16,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:38:16,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:38:16,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:38:16,899 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:38:16,899 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:38:16,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:38:16,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:38:16,900 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:38:16,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:38:16,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:38:16,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:38:16,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:38:16,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:38:16,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:38:16,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:38:16,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:38:16,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:38:16,903 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_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b [2022-11-20 10:38:17,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:38:17,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:38:17,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:38:17,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:38:17,241 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:38:17,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2022-11-20 10:38:20,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:38:21,053 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:38:21,054 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2022-11-20 10:38:21,068 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/data/f51aa20aa/457c2f54c0dd41a6ad9cd78f8835b6c6/FLAG78b9c9d2b [2022-11-20 10:38:21,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/data/f51aa20aa/457c2f54c0dd41a6ad9cd78f8835b6c6 [2022-11-20 10:38:21,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:38:21,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:38:21,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:38:21,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:38:21,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:38:21,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ee5dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21, skipping insertion in model container [2022-11-20 10:38:21,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:38:21,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:38:21,576 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_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30285,30298] [2022-11-20 10:38:21,595 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_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30729,30742] [2022-11-20 10:38:21,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:38:21,628 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:38:21,697 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_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30285,30298] [2022-11-20 10:38:21,708 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_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30729,30742] [2022-11-20 10:38:21,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:38:21,767 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:38:21,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21 WrapperNode [2022-11-20 10:38:21,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:38:21,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:38:21,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:38:21,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:38:21,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,844 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 158 [2022-11-20 10:38:21,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:38:21,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:38:21,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:38:21,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:38:21,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:38:21,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:38:21,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:38:21,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:38:21,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (1/1) ... [2022-11-20 10:38:21,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:38:21,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:21,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:38:21,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-20 10:38:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-20 10:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:38:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:38:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:38:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:38:22,005 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:38:22,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:38:22,200 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:38:22,711 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:38:23,123 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:38:23,123 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:38:23,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:23 BoogieIcfgContainer [2022-11-20 10:38:23,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:38:23,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:38:23,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:38:23,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:38:23,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:38:21" (1/3) ... [2022-11-20 10:38:23,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f605a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:38:23, skipping insertion in model container [2022-11-20 10:38:23,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:21" (2/3) ... [2022-11-20 10:38:23,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f605a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:38:23, skipping insertion in model container [2022-11-20 10:38:23,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:23" (3/3) ... [2022-11-20 10:38:23,142 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2022-11-20 10:38:23,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:38:23,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-20 10:38:23,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:38:23,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:38:23,424 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:38:23,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 147 transitions, 299 flow [2022-11-20 10:38:23,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 147 transitions, 299 flow [2022-11-20 10:38:23,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 147 transitions, 299 flow [2022-11-20 10:38:23,546 INFO L130 PetriNetUnfolder]: 9/163 cut-off events. [2022-11-20 10:38:23,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:38:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 163 events. 9/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 566 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 122. Up to 4 conditions per place. [2022-11-20 10:38:23,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 3952 [2022-11-20 10:38:38,149 INFO L134 LiptonReduction]: Checked pairs total: 6690 [2022-11-20 10:38:38,149 INFO L136 LiptonReduction]: Total number of compositions: 138 [2022-11-20 10:38:38,169 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 67 transitions, 139 flow [2022-11-20 10:38:38,232 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 417 states, 220 states have (on average 3.731818181818182) internal successors, (821), 416 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:38,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:38:38,262 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;@f0c3419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:38:38,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-20 10:38:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 417 states, 220 states have (on average 3.731818181818182) internal successors, (821), 416 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:38:38,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:38,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:38:38,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 10:38:38,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:38,281 INFO L85 PathProgramCache]: Analyzing trace with hash 26995, now seen corresponding path program 1 times [2022-11-20 10:38:38,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:38,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397313597] [2022-11-20 10:38:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:38,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397313597] [2022-11-20 10:38:38,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397313597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:38,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:38,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:38:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696655780] [2022-11-20 10:38:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:38,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:38:38,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:38:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:38,631 INFO L87 Difference]: Start difference. First operand has 417 states, 220 states have (on average 3.731818181818182) internal successors, (821), 416 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:38,815 INFO L93 Difference]: Finished difference Result 207 states and 386 transitions. [2022-11-20 10:38:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:38:38,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-20 10:38:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:38,845 INFO L225 Difference]: With dead ends: 207 [2022-11-20 10:38:38,845 INFO L226 Difference]: Without dead ends: 207 [2022-11-20 10:38:38,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:38,852 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:38,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 4 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-20 10:38:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2022-11-20 10:38:38,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 149 states have (on average 2.5838926174496644) internal successors, (385), 204 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 385 transitions. [2022-11-20 10:38:38,970 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 385 transitions. Word has length 2 [2022-11-20 10:38:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:38,973 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 385 transitions. [2022-11-20 10:38:38,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 385 transitions. [2022-11-20 10:38:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:38:38,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:38,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:38:38,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:38:38,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 10:38:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash 26996, now seen corresponding path program 1 times [2022-11-20 10:38:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:38,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472988090] [2022-11-20 10:38:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:38,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:39,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:39,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472988090] [2022-11-20 10:38:39,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472988090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:39,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:39,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:38:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544485252] [2022-11-20 10:38:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:39,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:38:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:38:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:39,171 INFO L87 Difference]: Start difference. First operand 205 states and 385 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:39,329 INFO L93 Difference]: Finished difference Result 164 states and 300 transitions. [2022-11-20 10:38:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:38:39,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-20 10:38:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:39,331 INFO L225 Difference]: With dead ends: 164 [2022-11-20 10:38:39,332 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 10:38:39,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:39,334 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:39,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 10:38:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-20 10:38:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 136 states have (on average 2.2058823529411766) internal successors, (300), 163 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 300 transitions. [2022-11-20 10:38:39,348 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 300 transitions. Word has length 2 [2022-11-20 10:38:39,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:39,348 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 300 transitions. [2022-11-20 10:38:39,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 300 transitions. [2022-11-20 10:38:39,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:38:39,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:39,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:38:39,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:38:39,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 10:38:39,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:39,351 INFO L85 PathProgramCache]: Analyzing trace with hash 804853559, now seen corresponding path program 1 times [2022-11-20 10:38:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:39,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189064243] [2022-11-20 10:38:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:39,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:39,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189064243] [2022-11-20 10:38:39,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189064243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:39,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:39,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:38:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978036116] [2022-11-20 10:38:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:39,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:39,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:39,629 INFO L87 Difference]: Start difference. First operand 164 states and 300 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:39,758 INFO L93 Difference]: Finished difference Result 148 states and 272 transitions. [2022-11-20 10:38:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:38:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:38:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:39,764 INFO L225 Difference]: With dead ends: 148 [2022-11-20 10:38:39,764 INFO L226 Difference]: Without dead ends: 148 [2022-11-20 10:38:39,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:39,765 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 112 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:39,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-20 10:38:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-20 10:38:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 124 states have (on average 2.193548387096774) internal successors, (272), 147 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 272 transitions. [2022-11-20 10:38:39,775 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 272 transitions. Word has length 5 [2022-11-20 10:38:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 272 transitions. [2022-11-20 10:38:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 272 transitions. [2022-11-20 10:38:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:38:39,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:39,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:38:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:38:39,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 10:38:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash 804853560, now seen corresponding path program 1 times [2022-11-20 10:38:39,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:39,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454726721] [2022-11-20 10:38:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:40,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:40,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454726721] [2022-11-20 10:38:40,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454726721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:40,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:40,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:38:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666889080] [2022-11-20 10:38:40,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:40,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:40,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:40,034 INFO L87 Difference]: Start difference. First operand 148 states and 272 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:40,138 INFO L93 Difference]: Finished difference Result 132 states and 244 transitions. [2022-11-20 10:38:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:38:40,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:38:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:40,140 INFO L225 Difference]: With dead ends: 132 [2022-11-20 10:38:40,140 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 10:38:40,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:40,141 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:40,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 10:38:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-20 10:38:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 112 states have (on average 2.1785714285714284) internal successors, (244), 131 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 244 transitions. [2022-11-20 10:38:40,148 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 244 transitions. Word has length 5 [2022-11-20 10:38:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:40,149 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 244 transitions. [2022-11-20 10:38:40,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 244 transitions. [2022-11-20 10:38:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:38:40,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:40,150 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-20 10:38:40,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:38:40,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-20 10:38:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash -819435276, now seen corresponding path program 1 times [2022-11-20 10:38:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:40,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64244959] [2022-11-20 10:38:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:38:40,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:38:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:38:40,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:38:40,188 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:38:40,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (79 of 80 remaining) [2022-11-20 10:38:40,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 80 remaining) [2022-11-20 10:38:40,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 80 remaining) [2022-11-20 10:38:40,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 80 remaining) [2022-11-20 10:38:40,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 80 remaining) [2022-11-20 10:38:40,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 80 remaining) [2022-11-20 10:38:40,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 80 remaining) [2022-11-20 10:38:40,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 80 remaining) [2022-11-20 10:38:40,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 80 remaining) [2022-11-20 10:38:40,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (70 of 80 remaining) [2022-11-20 10:38:40,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 80 remaining) [2022-11-20 10:38:40,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 80 remaining) [2022-11-20 10:38:40,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 80 remaining) [2022-11-20 10:38:40,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 80 remaining) [2022-11-20 10:38:40,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (65 of 80 remaining) [2022-11-20 10:38:40,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 80 remaining) [2022-11-20 10:38:40,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 80 remaining) [2022-11-20 10:38:40,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 80 remaining) [2022-11-20 10:38:40,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 80 remaining) [2022-11-20 10:38:40,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 80 remaining) [2022-11-20 10:38:40,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 80 remaining) [2022-11-20 10:38:40,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 80 remaining) [2022-11-20 10:38:40,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 80 remaining) [2022-11-20 10:38:40,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 80 remaining) [2022-11-20 10:38:40,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 80 remaining) [2022-11-20 10:38:40,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 80 remaining) [2022-11-20 10:38:40,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 80 remaining) [2022-11-20 10:38:40,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 80 remaining) [2022-11-20 10:38:40,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 80 remaining) [2022-11-20 10:38:40,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 80 remaining) [2022-11-20 10:38:40,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 80 remaining) [2022-11-20 10:38:40,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 80 remaining) [2022-11-20 10:38:40,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 80 remaining) [2022-11-20 10:38:40,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 80 remaining) [2022-11-20 10:38:40,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 80 remaining) [2022-11-20 10:38:40,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 80 remaining) [2022-11-20 10:38:40,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 80 remaining) [2022-11-20 10:38:40,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 80 remaining) [2022-11-20 10:38:40,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 80 remaining) [2022-11-20 10:38:40,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (40 of 80 remaining) [2022-11-20 10:38:40,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 80 remaining) [2022-11-20 10:38:40,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 80 remaining) [2022-11-20 10:38:40,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 80 remaining) [2022-11-20 10:38:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 80 remaining) [2022-11-20 10:38:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 80 remaining) [2022-11-20 10:38:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 80 remaining) [2022-11-20 10:38:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 80 remaining) [2022-11-20 10:38:40,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 80 remaining) [2022-11-20 10:38:40,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 80 remaining) [2022-11-20 10:38:40,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 80 remaining) [2022-11-20 10:38:40,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (29 of 80 remaining) [2022-11-20 10:38:40,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 80 remaining) [2022-11-20 10:38:40,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 80 remaining) [2022-11-20 10:38:40,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 80 remaining) [2022-11-20 10:38:40,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 80 remaining) [2022-11-20 10:38:40,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (24 of 80 remaining) [2022-11-20 10:38:40,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 80 remaining) [2022-11-20 10:38:40,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 80 remaining) [2022-11-20 10:38:40,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 80 remaining) [2022-11-20 10:38:40,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 80 remaining) [2022-11-20 10:38:40,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 80 remaining) [2022-11-20 10:38:40,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 80 remaining) [2022-11-20 10:38:40,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 80 remaining) [2022-11-20 10:38:40,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 80 remaining) [2022-11-20 10:38:40,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 80 remaining) [2022-11-20 10:38:40,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 80 remaining) [2022-11-20 10:38:40,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 80 remaining) [2022-11-20 10:38:40,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 80 remaining) [2022-11-20 10:38:40,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 80 remaining) [2022-11-20 10:38:40,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 80 remaining) [2022-11-20 10:38:40,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 80 remaining) [2022-11-20 10:38:40,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 80 remaining) [2022-11-20 10:38:40,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 80 remaining) [2022-11-20 10:38:40,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 80 remaining) [2022-11-20 10:38:40,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 80 remaining) [2022-11-20 10:38:40,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 80 remaining) [2022-11-20 10:38:40,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 80 remaining) [2022-11-20 10:38:40,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 80 remaining) [2022-11-20 10:38:40,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 80 remaining) [2022-11-20 10:38:40,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 80 remaining) [2022-11-20 10:38:40,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:38:40,212 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 10:38:40,214 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:38:40,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:38:40,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:38:40,345 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:38:40,345 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 252 transitions, 516 flow [2022-11-20 10:38:40,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 252 transitions, 516 flow [2022-11-20 10:38:40,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 252 transitions, 516 flow [2022-11-20 10:38:40,482 INFO L130 PetriNetUnfolder]: 17/286 cut-off events. [2022-11-20 10:38:40,483 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:38:40,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 286 events. 17/286 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1340 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 226. Up to 6 conditions per place. [2022-11-20 10:38:40,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 29744 [2022-11-20 10:39:02,127 INFO L134 LiptonReduction]: Checked pairs total: 64727 [2022-11-20 10:39:02,128 INFO L136 LiptonReduction]: Total number of compositions: 206 [2022-11-20 10:39:02,129 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 117 places, 126 transitions, 264 flow [2022-11-20 10:39:02,958 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24265 states, 16503 states have (on average 4.562806762406835) internal successors, (75300), 24264 states have internal predecessors, (75300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:02,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:39:02,960 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;@f0c3419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:39:02,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2022-11-20 10:39:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 24265 states, 16503 states have (on average 4.562806762406835) internal successors, (75300), 24264 states have internal predecessors, (75300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:39:03,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:03,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:39:03,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash 44933, now seen corresponding path program 1 times [2022-11-20 10:39:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:03,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220174275] [2022-11-20 10:39:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220174275] [2022-11-20 10:39:03,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220174275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:03,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:03,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:39:03,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871107003] [2022-11-20 10:39:03,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:03,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:03,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:03,280 INFO L87 Difference]: Start difference. First operand has 24265 states, 16503 states have (on average 4.562806762406835) internal successors, (75300), 24264 states have internal predecessors, (75300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:03,670 INFO L93 Difference]: Finished difference Result 13780 states and 41136 transitions. [2022-11-20 10:39:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-20 10:39:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:03,791 INFO L225 Difference]: With dead ends: 13780 [2022-11-20 10:39:03,791 INFO L226 Difference]: Without dead ends: 13780 [2022-11-20 10:39:03,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:03,792 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:03,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 11 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13780 states. [2022-11-20 10:39:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13780 to 13780. [2022-11-20 10:39:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13780 states, 11294 states have (on average 3.64228794049938) internal successors, (41136), 13779 states have internal predecessors, (41136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13780 states to 13780 states and 41136 transitions. [2022-11-20 10:39:04,587 INFO L78 Accepts]: Start accepts. Automaton has 13780 states and 41136 transitions. Word has length 2 [2022-11-20 10:39:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:04,587 INFO L495 AbstractCegarLoop]: Abstraction has 13780 states and 41136 transitions. [2022-11-20 10:39:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13780 states and 41136 transitions. [2022-11-20 10:39:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:39:04,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:04,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:39:04,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:39:04,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:04,589 INFO L85 PathProgramCache]: Analyzing trace with hash 44934, now seen corresponding path program 1 times [2022-11-20 10:39:04,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:04,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211687447] [2022-11-20 10:39:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:04,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:04,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211687447] [2022-11-20 10:39:04,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211687447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:04,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:04,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:39:04,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947122203] [2022-11-20 10:39:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:04,614 INFO L87 Difference]: Start difference. First operand 13780 states and 41136 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:05,097 INFO L93 Difference]: Finished difference Result 11897 states and 34677 transitions. [2022-11-20 10:39:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:05,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-20 10:39:05,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:05,167 INFO L225 Difference]: With dead ends: 11897 [2022-11-20 10:39:05,167 INFO L226 Difference]: Without dead ends: 11897 [2022-11-20 10:39:05,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:05,168 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:05,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 22 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:39:05,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11897 states. [2022-11-20 10:39:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11897 to 11709. [2022-11-20 10:39:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11709 states, 10414 states have (on average 3.301037065488765) internal successors, (34377), 11708 states have internal predecessors, (34377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11709 states to 11709 states and 34377 transitions. [2022-11-20 10:39:05,733 INFO L78 Accepts]: Start accepts. Automaton has 11709 states and 34377 transitions. Word has length 2 [2022-11-20 10:39:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:05,733 INFO L495 AbstractCegarLoop]: Abstraction has 11709 states and 34377 transitions. [2022-11-20 10:39:05,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 11709 states and 34377 transitions. [2022-11-20 10:39:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:39:05,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:05,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:39:05,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:39:05,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1339737353, now seen corresponding path program 1 times [2022-11-20 10:39:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:05,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372802288] [2022-11-20 10:39:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:05,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:05,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:05,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372802288] [2022-11-20 10:39:05,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372802288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:05,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:05,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37128045] [2022-11-20 10:39:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:05,868 INFO L87 Difference]: Start difference. First operand 11709 states and 34377 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:06,778 INFO L93 Difference]: Finished difference Result 9549 states and 27641 transitions. [2022-11-20 10:39:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:39:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:39:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:06,877 INFO L225 Difference]: With dead ends: 9549 [2022-11-20 10:39:06,877 INFO L226 Difference]: Without dead ends: 9549 [2022-11-20 10:39:06,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:06,879 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 139 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:06,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 37 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:39:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9549 states. [2022-11-20 10:39:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9549 to 9165. [2022-11-20 10:39:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9165 states, 8242 states have (on average 3.3096335840815336) internal successors, (27278), 9164 states have internal predecessors, (27278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9165 states to 9165 states and 27278 transitions. [2022-11-20 10:39:07,444 INFO L78 Accepts]: Start accepts. Automaton has 9165 states and 27278 transitions. Word has length 5 [2022-11-20 10:39:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:07,445 INFO L495 AbstractCegarLoop]: Abstraction has 9165 states and 27278 transitions. [2022-11-20 10:39:07,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9165 states and 27278 transitions. [2022-11-20 10:39:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:39:07,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:07,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:39:07,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:39:07,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1339737354, now seen corresponding path program 1 times [2022-11-20 10:39:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966474748] [2022-11-20 10:39:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:07,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966474748] [2022-11-20 10:39:07,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966474748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:07,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:07,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:07,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359571433] [2022-11-20 10:39:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:07,643 INFO L87 Difference]: Start difference. First operand 9165 states and 27278 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:07,980 INFO L93 Difference]: Finished difference Result 6801 states and 20384 transitions. [2022-11-20 10:39:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:39:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:08,012 INFO L225 Difference]: With dead ends: 6801 [2022-11-20 10:39:08,012 INFO L226 Difference]: Without dead ends: 6801 [2022-11-20 10:39:08,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:08,013 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:08,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 7 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2022-11-20 10:39:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6801. [2022-11-20 10:39:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6801 states, 6202 states have (on average 3.2866817155756207) internal successors, (20384), 6800 states have internal predecessors, (20384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6801 states to 6801 states and 20384 transitions. [2022-11-20 10:39:08,206 INFO L78 Accepts]: Start accepts. Automaton has 6801 states and 20384 transitions. Word has length 5 [2022-11-20 10:39:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:08,207 INFO L495 AbstractCegarLoop]: Abstraction has 6801 states and 20384 transitions. [2022-11-20 10:39:08,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6801 states and 20384 transitions. [2022-11-20 10:39:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:08,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:08,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:08,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:39:08,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1417805616, now seen corresponding path program 1 times [2022-11-20 10:39:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:08,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211587422] [2022-11-20 10:39:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:08,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:08,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211587422] [2022-11-20 10:39:08,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211587422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:08,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:08,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127985192] [2022-11-20 10:39:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:08,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:39:08,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:39:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:08,346 INFO L87 Difference]: Start difference. First operand 6801 states and 20384 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:08,753 INFO L93 Difference]: Finished difference Result 6123 states and 18392 transitions. [2022-11-20 10:39:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:08,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:08,862 INFO L225 Difference]: With dead ends: 6123 [2022-11-20 10:39:08,862 INFO L226 Difference]: Without dead ends: 6123 [2022-11-20 10:39:08,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:08,863 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:08,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 18 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:39:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2022-11-20 10:39:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6123. [2022-11-20 10:39:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 5608 states have (on average 3.2796005706134093) internal successors, (18392), 6122 states have internal predecessors, (18392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 18392 transitions. [2022-11-20 10:39:09,037 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 18392 transitions. Word has length 6 [2022-11-20 10:39:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:09,038 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 18392 transitions. [2022-11-20 10:39:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 18392 transitions. [2022-11-20 10:39:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:09,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:09,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:09,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:39:09,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:09,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1417805615, now seen corresponding path program 1 times [2022-11-20 10:39:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:09,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219160104] [2022-11-20 10:39:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:09,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219160104] [2022-11-20 10:39:09,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219160104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:09,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290876339] [2022-11-20 10:39:09,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:09,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:39:09,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:39:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:09,269 INFO L87 Difference]: Start difference. First operand 6123 states and 18392 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:09,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:09,493 INFO L93 Difference]: Finished difference Result 5455 states and 16432 transitions. [2022-11-20 10:39:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:09,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:09,519 INFO L225 Difference]: With dead ends: 5455 [2022-11-20 10:39:09,519 INFO L226 Difference]: Without dead ends: 5455 [2022-11-20 10:39:09,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:09,521 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:09,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 11 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2022-11-20 10:39:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5455. [2022-11-20 10:39:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5024 states have (on average 3.270700636942675) internal successors, (16432), 5454 states have internal predecessors, (16432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 16432 transitions. [2022-11-20 10:39:09,682 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 16432 transitions. Word has length 6 [2022-11-20 10:39:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:09,683 INFO L495 AbstractCegarLoop]: Abstraction has 5455 states and 16432 transitions. [2022-11-20 10:39:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 16432 transitions. [2022-11-20 10:39:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:09,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:09,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:39:09,685 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:09,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1417805612, now seen corresponding path program 1 times [2022-11-20 10:39:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:09,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898242480] [2022-11-20 10:39:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:09,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898242480] [2022-11-20 10:39:09,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898242480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:09,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:09,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375237319] [2022-11-20 10:39:09,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:09,765 INFO L87 Difference]: Start difference. First operand 5455 states and 16432 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:10,136 INFO L93 Difference]: Finished difference Result 5077 states and 15221 transitions. [2022-11-20 10:39:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:10,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:10,152 INFO L225 Difference]: With dead ends: 5077 [2022-11-20 10:39:10,152 INFO L226 Difference]: Without dead ends: 5077 [2022-11-20 10:39:10,152 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 [2022-11-20 10:39:10,153 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:10,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 25 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-11-20 10:39:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 5005. [2022-11-20 10:39:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 4628 states have (on average 3.2668539325842696) internal successors, (15119), 5004 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 15119 transitions. [2022-11-20 10:39:10,318 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 15119 transitions. Word has length 6 [2022-11-20 10:39:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:10,318 INFO L495 AbstractCegarLoop]: Abstraction has 5005 states and 15119 transitions. [2022-11-20 10:39:10,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 15119 transitions. [2022-11-20 10:39:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:10,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:10,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:10,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:39:10,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1417805611, now seen corresponding path program 1 times [2022-11-20 10:39:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:10,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237307047] [2022-11-20 10:39:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:10,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:10,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237307047] [2022-11-20 10:39:10,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237307047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:10,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:10,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853763159] [2022-11-20 10:39:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:10,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:10,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:10,446 INFO L87 Difference]: Start difference. First operand 5005 states and 15119 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:10,778 INFO L93 Difference]: Finished difference Result 4525 states and 13697 transitions. [2022-11-20 10:39:10,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:10,796 INFO L225 Difference]: With dead ends: 4525 [2022-11-20 10:39:10,796 INFO L226 Difference]: Without dead ends: 4525 [2022-11-20 10:39:10,797 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 [2022-11-20 10:39:10,798 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:10,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 27 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:10,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2022-11-20 10:39:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 4525. [2022-11-20 10:39:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4208 states have (on average 3.254990494296578) internal successors, (13697), 4524 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 13697 transitions. [2022-11-20 10:39:10,940 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 13697 transitions. Word has length 6 [2022-11-20 10:39:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:10,940 INFO L495 AbstractCegarLoop]: Abstraction has 4525 states and 13697 transitions. [2022-11-20 10:39:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 13697 transitions. [2022-11-20 10:39:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:10,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:10,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:10,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:39:10,942 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:10,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1417808622, now seen corresponding path program 1 times [2022-11-20 10:39:10,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:10,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76829122] [2022-11-20 10:39:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:10,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:11,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:11,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76829122] [2022-11-20 10:39:11,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76829122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:11,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:11,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:11,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564334098] [2022-11-20 10:39:11,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:11,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:11,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:11,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:11,006 INFO L87 Difference]: Start difference. First operand 4525 states and 13697 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:11,348 INFO L93 Difference]: Finished difference Result 4147 states and 12486 transitions. [2022-11-20 10:39:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:11,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:11,366 INFO L225 Difference]: With dead ends: 4147 [2022-11-20 10:39:11,366 INFO L226 Difference]: Without dead ends: 4147 [2022-11-20 10:39:11,366 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 [2022-11-20 10:39:11,367 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:11,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 22 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-11-20 10:39:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 4075. [2022-11-20 10:39:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3812 states have (on average 3.2502623294858344) internal successors, (12390), 4074 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 12390 transitions. [2022-11-20 10:39:11,480 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 12390 transitions. Word has length 6 [2022-11-20 10:39:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:11,481 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 12390 transitions. [2022-11-20 10:39:11,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 12390 transitions. [2022-11-20 10:39:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:11,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:11,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:11,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:39:11,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:11,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:11,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1417808621, now seen corresponding path program 1 times [2022-11-20 10:39:11,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:11,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445669321] [2022-11-20 10:39:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:11,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:11,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445669321] [2022-11-20 10:39:11,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445669321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:11,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:11,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587532186] [2022-11-20 10:39:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:11,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:11,584 INFO L87 Difference]: Start difference. First operand 4075 states and 12390 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:11,927 INFO L93 Difference]: Finished difference Result 3595 states and 10968 transitions. [2022-11-20 10:39:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:11,945 INFO L225 Difference]: With dead ends: 3595 [2022-11-20 10:39:11,945 INFO L226 Difference]: Without dead ends: 3595 [2022-11-20 10:39:11,946 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 [2022-11-20 10:39:11,946 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:11,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 26 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2022-11-20 10:39:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3595. [2022-11-20 10:39:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3392 states have (on average 3.233490566037736) internal successors, (10968), 3594 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 10968 transitions. [2022-11-20 10:39:12,089 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 10968 transitions. Word has length 6 [2022-11-20 10:39:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:12,089 INFO L495 AbstractCegarLoop]: Abstraction has 3595 states and 10968 transitions. [2022-11-20 10:39:12,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 10968 transitions. [2022-11-20 10:39:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:12,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:12,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:12,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:39:12,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:12,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1417808626, now seen corresponding path program 1 times [2022-11-20 10:39:12,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:12,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764055557] [2022-11-20 10:39:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:12,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:12,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:12,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764055557] [2022-11-20 10:39:12,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764055557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:12,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:12,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222138632] [2022-11-20 10:39:12,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:39:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:39:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:12,305 INFO L87 Difference]: Start difference. First operand 3595 states and 10968 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:12,634 INFO L93 Difference]: Finished difference Result 3117 states and 9536 transitions. [2022-11-20 10:39:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:12,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:12,643 INFO L225 Difference]: With dead ends: 3117 [2022-11-20 10:39:12,643 INFO L226 Difference]: Without dead ends: 3117 [2022-11-20 10:39:12,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:12,644 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:12,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 16 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2022-11-20 10:39:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 3117. [2022-11-20 10:39:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 2958 states have (on average 3.2237998647734956) internal successors, (9536), 3116 states have internal predecessors, (9536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 9536 transitions. [2022-11-20 10:39:12,746 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 9536 transitions. Word has length 6 [2022-11-20 10:39:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:12,746 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 9536 transitions. [2022-11-20 10:39:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 9536 transitions. [2022-11-20 10:39:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:39:12,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:12,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:39:12,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:39:12,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1417808625, now seen corresponding path program 1 times [2022-11-20 10:39:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975286608] [2022-11-20 10:39:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:12,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:12,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975286608] [2022-11-20 10:39:12,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975286608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:12,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:12,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942281603] [2022-11-20 10:39:12,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:12,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:39:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:39:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:12,899 INFO L87 Difference]: Start difference. First operand 3117 states and 9536 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:13,205 INFO L93 Difference]: Finished difference Result 3164 states and 9390 transitions. [2022-11-20 10:39:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:13,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-20 10:39:13,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:13,218 INFO L225 Difference]: With dead ends: 3164 [2022-11-20 10:39:13,218 INFO L226 Difference]: Without dead ends: 3164 [2022-11-20 10:39:13,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:13,219 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:13,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 18 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-11-20 10:39:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2876. [2022-11-20 10:39:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2733 states have (on average 3.2111233077204537) internal successors, (8776), 2875 states have internal predecessors, (8776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 8776 transitions. [2022-11-20 10:39:13,324 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 8776 transitions. Word has length 6 [2022-11-20 10:39:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:13,324 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 8776 transitions. [2022-11-20 10:39:13,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 8776 transitions. [2022-11-20 10:39:13,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:39:13,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:13,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:13,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:39:13,330 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:13,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1006514102, now seen corresponding path program 1 times [2022-11-20 10:39:13,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:13,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579891760] [2022-11-20 10:39:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:13,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:13,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579891760] [2022-11-20 10:39:13,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579891760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:13,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:13,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010728702] [2022-11-20 10:39:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:13,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:13,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:13,609 INFO L87 Difference]: Start difference. First operand 2876 states and 8776 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-20 10:39:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:13,813 INFO L93 Difference]: Finished difference Result 2522 states and 7716 transitions. [2022-11-20 10:39:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-11-20 10:39:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:13,823 INFO L225 Difference]: With dead ends: 2522 [2022-11-20 10:39:13,823 INFO L226 Difference]: Without dead ends: 2522 [2022-11-20 10:39:13,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:13,824 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 158 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:13,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 11 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-11-20 10:39:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2522. [2022-11-20 10:39:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2414 states have (on average 3.196354598177299) internal successors, (7716), 2521 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 7716 transitions. [2022-11-20 10:39:13,906 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 7716 transitions. Word has length 8 [2022-11-20 10:39:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:13,907 INFO L495 AbstractCegarLoop]: Abstraction has 2522 states and 7716 transitions. [2022-11-20 10:39:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-20 10:39:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 7716 transitions. [2022-11-20 10:39:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:39:13,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:13,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:13,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:39:13,908 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err18ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1006514099, now seen corresponding path program 1 times [2022-11-20 10:39:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:13,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012646031] [2022-11-20 10:39:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:15,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012646031] [2022-11-20 10:39:15,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012646031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:15,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:15,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:39:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000251077] [2022-11-20 10:39:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:39:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:39:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:39:15,165 INFO L87 Difference]: Start difference. First operand 2522 states and 7716 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-20 10:39:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:16,431 INFO L93 Difference]: Finished difference Result 3362 states and 10236 transitions. [2022-11-20 10:39:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:39:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 [2022-11-20 10:39:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:16,443 INFO L225 Difference]: With dead ends: 3362 [2022-11-20 10:39:16,443 INFO L226 Difference]: Without dead ends: 3362 [2022-11-20 10:39:16,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:39:16,444 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 141 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:16,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 110 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:39:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2022-11-20 10:39:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2808. [2022-11-20 10:39:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 2700 states have (on average 3.212962962962963) internal successors, (8675), 2807 states have internal predecessors, (8675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 8675 transitions. [2022-11-20 10:39:16,522 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 8675 transitions. Word has length 8 [2022-11-20 10:39:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:16,523 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 8675 transitions. [2022-11-20 10:39:16,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-20 10:39:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 8675 transitions. [2022-11-20 10:39:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:39:16,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:16,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:16,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:39:16,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1192329995, now seen corresponding path program 1 times [2022-11-20 10:39:16,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:16,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614645944] [2022-11-20 10:39:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:16,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:39:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:16,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614645944] [2022-11-20 10:39:16,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614645944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:16,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:16,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979171579] [2022-11-20 10:39:16,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:16,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:39:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:39:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:16,605 INFO L87 Difference]: Start difference. First operand 2808 states and 8675 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:17,081 INFO L93 Difference]: Finished difference Result 3114 states and 9301 transitions. [2022-11-20 10:39:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:39:17,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 10:39:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:17,093 INFO L225 Difference]: With dead ends: 3114 [2022-11-20 10:39:17,093 INFO L226 Difference]: Without dead ends: 3114 [2022-11-20 10:39:17,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:39:17,094 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 114 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:17,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 24 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:39:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2022-11-20 10:39:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 2805. [2022-11-20 10:39:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2697 states have (on average 3.210604375231739) internal successors, (8659), 2804 states have internal predecessors, (8659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 8659 transitions. [2022-11-20 10:39:17,196 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 8659 transitions. Word has length 9 [2022-11-20 10:39:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:17,196 INFO L495 AbstractCegarLoop]: Abstraction has 2805 states and 8659 transitions. [2022-11-20 10:39:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 8659 transitions. [2022-11-20 10:39:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:39:17,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:17,197 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:39:17,198 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1752154926, now seen corresponding path program 1 times [2022-11-20 10:39:17,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:17,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419580095] [2022-11-20 10:39:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:39:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:17,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419580095] [2022-11-20 10:39:17,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419580095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:17,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:17,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:17,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900125520] [2022-11-20 10:39:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:17,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:17,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:17,255 INFO L87 Difference]: Start difference. First operand 2805 states and 8659 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:17,500 INFO L93 Difference]: Finished difference Result 2733 states and 8290 transitions. [2022-11-20 10:39:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 10:39:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:17,509 INFO L225 Difference]: With dead ends: 2733 [2022-11-20 10:39:17,509 INFO L226 Difference]: Without dead ends: 2733 [2022-11-20 10:39:17,509 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 [2022-11-20 10:39:17,511 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:17,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 19 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-11-20 10:39:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2649. [2022-11-20 10:39:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2544 states have (on average 3.21187106918239) internal successors, (8171), 2648 states have internal predecessors, (8171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 8171 transitions. [2022-11-20 10:39:17,582 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 8171 transitions. Word has length 10 [2022-11-20 10:39:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:17,583 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 8171 transitions. [2022-11-20 10:39:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 8171 transitions. [2022-11-20 10:39:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:39:17,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:17,584 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:17,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:39:17,584 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1752154925, now seen corresponding path program 1 times [2022-11-20 10:39:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:17,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840076194] [2022-11-20 10:39:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:39:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:17,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840076194] [2022-11-20 10:39:17,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840076194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:17,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:17,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831800293] [2022-11-20 10:39:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:17,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:17,680 INFO L87 Difference]: Start difference. First operand 2649 states and 8171 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:17,915 INFO L93 Difference]: Finished difference Result 2447 states and 7515 transitions. [2022-11-20 10:39:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:17,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 10:39:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:17,923 INFO L225 Difference]: With dead ends: 2447 [2022-11-20 10:39:17,924 INFO L226 Difference]: Without dead ends: 2447 [2022-11-20 10:39:17,925 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 [2022-11-20 10:39:17,926 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:17,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 23 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-11-20 10:39:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2447. [2022-11-20 10:39:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2351 states have (on average 3.1965121225010633) internal successors, (7515), 2446 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 7515 transitions. [2022-11-20 10:39:17,984 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 7515 transitions. Word has length 10 [2022-11-20 10:39:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:17,985 INFO L495 AbstractCegarLoop]: Abstraction has 2447 states and 7515 transitions. [2022-11-20 10:39:17,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 7515 transitions. [2022-11-20 10:39:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:39:17,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:17,986 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:17,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:39:17,986 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1752150915, now seen corresponding path program 1 times [2022-11-20 10:39:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:17,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277389822] [2022-11-20 10:39:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:39:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:18,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277389822] [2022-11-20 10:39:18,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277389822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:18,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:18,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028679835] [2022-11-20 10:39:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:18,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:18,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:18,048 INFO L87 Difference]: Start difference. First operand 2447 states and 7515 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:18,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:18,323 INFO L93 Difference]: Finished difference Result 2299 states and 6880 transitions. [2022-11-20 10:39:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:18,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 10:39:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:18,331 INFO L225 Difference]: With dead ends: 2299 [2022-11-20 10:39:18,331 INFO L226 Difference]: Without dead ends: 2299 [2022-11-20 10:39:18,332 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 [2022-11-20 10:39:18,332 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:18,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 17 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2022-11-20 10:39:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2200. [2022-11-20 10:39:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2110 states have (on average 3.193364928909953) internal successors, (6738), 2199 states have internal predecessors, (6738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 6738 transitions. [2022-11-20 10:39:18,391 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 6738 transitions. Word has length 10 [2022-11-20 10:39:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:18,393 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 6738 transitions. [2022-11-20 10:39:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 6738 transitions. [2022-11-20 10:39:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:39:18,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:18,394 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:18,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:39:18,395 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1752150910, now seen corresponding path program 1 times [2022-11-20 10:39:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:18,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067051776] [2022-11-20 10:39:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:39:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:18,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067051776] [2022-11-20 10:39:18,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067051776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:18,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:18,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991240596] [2022-11-20 10:39:18,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:18,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:18,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:18,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:18,487 INFO L87 Difference]: Start difference. First operand 2200 states and 6738 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:18,711 INFO L93 Difference]: Finished difference Result 1903 states and 5781 transitions. [2022-11-20 10:39:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 10:39:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:18,717 INFO L225 Difference]: With dead ends: 1903 [2022-11-20 10:39:18,718 INFO L226 Difference]: Without dead ends: 1903 [2022-11-20 10:39:18,718 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 [2022-11-20 10:39:18,718 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:18,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 22 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-11-20 10:39:18,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1903. [2022-11-20 10:39:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1825 states have (on average 3.1676712328767125) internal successors, (5781), 1902 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5781 transitions. [2022-11-20 10:39:18,766 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5781 transitions. Word has length 10 [2022-11-20 10:39:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:18,767 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 5781 transitions. [2022-11-20 10:39:18,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5781 transitions. [2022-11-20 10:39:18,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:39:18,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:18,768 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:18,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:39:18,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err18ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:18,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1127510226, now seen corresponding path program 1 times [2022-11-20 10:39:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:18,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901923460] [2022-11-20 10:39:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901923460] [2022-11-20 10:39:19,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901923460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:19,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971276884] [2022-11-20 10:39:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:19,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:19,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:39:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:19,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 10:39:19,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:20,031 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 10:39:20,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 10:39:20,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 10:39:20,223 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-20 10:39:20,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-20 10:39:22,030 INFO L321 Elim1Store]: treesize reduction 1080, result has 11.0 percent of original size [2022-11-20 10:39:22,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 11 new quantified variables, introduced 38 case distinctions, treesize of input 691 treesize of output 1218 [2022-11-20 10:39:22,187 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 10:39:22,188 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 402 treesize of output 392 [2022-11-20 10:39:22,497 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-20 10:39:22,497 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 392 treesize of output 399 [2022-11-20 10:39:22,605 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 0 case distinctions, treesize of input 25 treesize of output 22 [2022-11-20 10:39:22,690 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 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 10:39:22,765 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 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 10:39:22,847 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 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 10:39:28,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:28,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:28,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:28,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:28,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:28,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:28,529 INFO L321 Elim1Store]: treesize reduction 127, result has 31.7 percent of original size [2022-11-20 10:39:28,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 1969 treesize of output 1907 [2022-11-20 10:39:28,662 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 0 case distinctions, treesize of input 129 treesize of output 106 [2022-11-20 10:39:28,881 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 0 case distinctions, treesize of input 129 treesize of output 106 [2022-11-20 10:39:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:30,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:30,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:30,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:30,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 10:39:31,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:31,743 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-20 10:39:31,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 65 [2022-11-20 10:39:32,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:32,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:32,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:32,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 647 treesize of output 638 [2022-11-20 10:39:33,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:33,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 467 treesize of output 5 [2022-11-20 10:39:33,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:33,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 604 treesize of output 781 [2022-11-20 10:39:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:34,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 134 [2022-11-20 10:39:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:34,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 11 [2022-11-20 10:39:34,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:34,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:34,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 725 treesize of output 746 [2022-11-20 10:39:34,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:39:34,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:39:35,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:35,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 539 treesize of output 5 [2022-11-20 10:39:35,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:35,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 890 treesize of output 833 [2022-11-20 10:39:35,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 29 [2022-11-20 10:39:36,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:36,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 443 treesize of output 23 [2022-11-20 10:39:37,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:37,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:37,845 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-20 10:39:37,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 125083 treesize of output 125013 [2022-11-20 10:39:39,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 125060 treesize of output 109700 [2022-11-20 10:39:39,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109700 treesize of output 109698 [2022-11-20 10:39:40,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109698 treesize of output 109694 [2022-11-20 10:39:41,009 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 109694 treesize of output 109693 [2022-11-20 10:39:42,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109689 treesize of output 109687 [2022-11-20 10:39:42,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109687 treesize of output 109685 [2022-11-20 10:39:43,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109685 treesize of output 109683 [2022-11-20 10:39:45,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:39:45,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:39:45,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2022-11-20 10:39:48,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:39:48,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2022-11-20 10:39:48,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:39:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:48,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:49,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:39:49,119 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 283 treesize of output 298 [2022-11-20 10:39:49,200 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-20 10:39:49,200 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 273 treesize of output 280 [2022-11-20 10:39:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:54,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971276884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:39:54,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:39:54,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2022-11-20 10:39:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799202658] [2022-11-20 10:39:54,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:39:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:39:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=369, Unknown=7, NotChecked=0, Total=462 [2022-11-20 10:39:54,348 INFO L87 Difference]: Start difference. First operand 1903 states and 5781 transitions. Second operand has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:56,701 INFO L93 Difference]: Finished difference Result 2607 states and 8065 transitions. [2022-11-20 10:39:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:39:56,702 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2022-11-20 10:39:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:56,709 INFO L225 Difference]: With dead ends: 2607 [2022-11-20 10:39:56,710 INFO L226 Difference]: Without dead ends: 2607 [2022-11-20 10:39:56,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=173, Invalid=632, Unknown=7, NotChecked=0, Total=812 [2022-11-20 10:39:56,711 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 300 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 648 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:56,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 178 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 567 Invalid, 0 Unknown, 648 Unchecked, 1.0s Time] [2022-11-20 10:39:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2022-11-20 10:39:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2112. [2022-11-20 10:39:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2034 states have (on average 3.235496558505408) internal successors, (6581), 2111 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 6581 transitions. [2022-11-20 10:39:56,765 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 6581 transitions. Word has length 11 [2022-11-20 10:39:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:56,766 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 6581 transitions. [2022-11-20 10:39:56,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 6581 transitions. [2022-11-20 10:39:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:39:56,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:56,767 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:56,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:56,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 10:39:56,973 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err18ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:39:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:56,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1127495346, now seen corresponding path program 2 times [2022-11-20 10:39:56,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:56,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286601336] [2022-11-20 10:39:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:56,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:57,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:57,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286601336] [2022-11-20 10:39:57,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286601336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:57,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639540657] [2022-11-20 10:39:57,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:39:57,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:57,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:57,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:57,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:39:57,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:39:57,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:39:57,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 10:39:57,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:57,998 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 10:39:57,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 10:39:58,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 10:39:58,122 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 10:39:58,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:39:59,898 INFO L321 Elim1Store]: treesize reduction 1080, result has 11.0 percent of original size [2022-11-20 10:39:59,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 11 new quantified variables, introduced 38 case distinctions, treesize of input 691 treesize of output 1223 [2022-11-20 10:40:00,279 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 10:40:00,280 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 402 treesize of output 392 [2022-11-20 10:40:00,675 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-20 10:40:00,675 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 392 treesize of output 399 [2022-11-20 10:40:00,779 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 0 case distinctions, treesize of input 25 treesize of output 22 [2022-11-20 10:40:00,908 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 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 10:40:01,048 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 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 10:40:01,142 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 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 10:40:04,338 INFO L321 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2022-11-20 10:40:04,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 320 treesize of output 287 [2022-11-20 10:40:07,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:07,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:07,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:07,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:07,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 662 treesize of output 667 [2022-11-20 10:40:07,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 608 treesize of output 606 [2022-11-20 10:40:07,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 606 treesize of output 604 [2022-11-20 10:40:07,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2022-11-20 10:40:07,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:07,696 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 0 case distinctions, treesize of input 67 treesize of output 7 [2022-11-20 10:40:07,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:07,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:07,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 34 [2022-11-20 10:40:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:08,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:08,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:08,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:08,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:08,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:08,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 659 treesize of output 965 [2022-11-20 10:40:08,227 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 551 treesize of output 492 [2022-11-20 10:40:08,264 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 460 treesize of output 401 [2022-11-20 10:40:08,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:08,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:08,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:08,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 400 [2022-11-20 10:40:09,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 29 [2022-11-20 10:40:09,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 29 [2022-11-20 10:40:10,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:10,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 23 [2022-11-20 10:40:10,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 220 [2022-11-20 10:40:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:10,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:10,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:10,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 741 treesize of output 574 [2022-11-20 10:40:10,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2022-11-20 10:40:10,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2022-11-20 10:40:10,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:11,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:11,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:11,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 47 [2022-11-20 10:40:11,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 107 treesize of output 99 [2022-11-20 10:40:11,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:11,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:11,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:11,765 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:40:11,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 45 [2022-11-20 10:40:11,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:11,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:11,877 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_326))) (or (< (mod |c_thr1Thread1of2ForFork0_inc_~inc__v~0#1| 4294967296) (mod (select (select .cse0 |c_~#value~0.base|) |c_~#value~0.offset|) 4294967296)) (not (= (mod (select (select .cse0 |c_~#dec_flag~0.base|) |c_~#dec_flag~0.offset|) 4294967296) 0))))) is different from false [2022-11-20 10:40:11,896 WARN L837 $PredicateComparison]: unable to prove that (or (= (mod (select (select |c_#memory_int| |c_thr1Thread1of2ForFork0_inc_~#inc__casret~0#1.base|) |c_thr1Thread1of2ForFork0_inc_~#inc__casret~0#1.offset|) 4294967296) 0) (forall ((v_ArrVal_326 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_326))) (or (< (mod |c_thr1Thread1of2ForFork0_inc_~inc__v~0#1| 4294967296) (mod (select (select .cse0 |c_~#value~0.base|) |c_~#value~0.offset|) 4294967296)) (not (= (mod (select (select .cse0 |c_~#dec_flag~0.base|) |c_~#dec_flag~0.offset|) 4294967296) 0)))))) is different from false [2022-11-20 10:40:12,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:40:12,145 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 283 treesize of output 298 [2022-11-20 10:40:12,222 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-20 10:40:12,223 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 273 treesize of output 280 [2022-11-20 10:40:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 10:40:27,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639540657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:27,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:40:27,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 19 [2022-11-20 10:40:27,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273493979] [2022-11-20 10:40:27,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:27,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:40:27,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:40:27,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=8, NotChecked=70, Total=420 [2022-11-20 10:40:27,741 INFO L87 Difference]: Start difference. First operand 2112 states and 6581 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:31,033 INFO L93 Difference]: Finished difference Result 2867 states and 9194 transitions. [2022-11-20 10:40:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:40:31,034 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2022-11-20 10:40:31,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:31,040 INFO L225 Difference]: With dead ends: 2867 [2022-11-20 10:40:31,040 INFO L226 Difference]: Without dead ends: 2867 [2022-11-20 10:40:31,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=116, Invalid=429, Unknown=15, NotChecked=90, Total=650 [2022-11-20 10:40:31,041 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 146 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 773 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:31,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 186 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 315 Invalid, 0 Unknown, 773 Unchecked, 0.7s Time] [2022-11-20 10:40:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2022-11-20 10:40:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2372. [2022-11-20 10:40:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2294 states have (on average 3.2955536181342633) internal successors, (7560), 2371 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 7560 transitions. [2022-11-20 10:40:31,106 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 7560 transitions. Word has length 11 [2022-11-20 10:40:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:31,106 INFO L495 AbstractCegarLoop]: Abstraction has 2372 states and 7560 transitions. [2022-11-20 10:40:31,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 7560 transitions. [2022-11-20 10:40:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:40:31,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:31,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:31,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:31,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 10:40:31,313 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err18ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:40:31,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1917502733, now seen corresponding path program 1 times [2022-11-20 10:40:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:31,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500090601] [2022-11-20 10:40:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:32,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:32,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500090601] [2022-11-20 10:40:32,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500090601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294601329] [2022-11-20 10:40:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:32,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:32,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:32,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:32,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:40:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:32,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:40:32,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:32,958 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-20 10:40:32,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2022-11-20 10:40:32,978 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 10:40:32,998 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 10:40:33,019 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 10:40:33,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:33,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:33,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:33,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 17 [2022-11-20 10:40:33,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:33,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:33,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:33,745 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-20 10:40:33,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 199 treesize of output 170 [2022-11-20 10:40:33,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:33,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 10:40:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:34,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:34,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294601329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:34,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:34,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2022-11-20 10:40:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226850240] [2022-11-20 10:40:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:34,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:40:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:40:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=101, Unknown=4, NotChecked=0, Total=132 [2022-11-20 10:40:34,397 INFO L87 Difference]: Start difference. First operand 2372 states and 7560 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:34,752 INFO L93 Difference]: Finished difference Result 2972 states and 9265 transitions. [2022-11-20 10:40:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:40:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:40:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:34,758 INFO L225 Difference]: With dead ends: 2972 [2022-11-20 10:40:34,758 INFO L226 Difference]: Without dead ends: 2972 [2022-11-20 10:40:34,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=101, Unknown=4, NotChecked=0, Total=132 [2022-11-20 10:40:34,759 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:34,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 31 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2022-11-20 10:40:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2022-11-20 10:40:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2676. [2022-11-20 10:40:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2598 states have (on average 3.2852193995381063) internal successors, (8535), 2675 states have internal predecessors, (8535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 8535 transitions. [2022-11-20 10:40:34,821 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 8535 transitions. Word has length 11 [2022-11-20 10:40:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:34,821 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 8535 transitions. [2022-11-20 10:40:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 8535 transitions. [2022-11-20 10:40:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:40:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:34,823 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 10:40:34,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:35,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cb3659-9c6c-4c5f-93bd-2d4773701ae8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 10:40:35,029 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2022-11-20 10:40:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1502864264, now seen corresponding path program 1 times [2022-11-20 10:40:35,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:35,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475127981] [2022-11-20 10:40:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:35,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:40:35,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:40:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:40:35,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:40:35,072 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:40:35,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (117 of 118 remaining) [2022-11-20 10:40:35,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 118 remaining) [2022-11-20 10:40:35,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 118 remaining) [2022-11-20 10:40:35,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 118 remaining) [2022-11-20 10:40:35,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 118 remaining) [2022-11-20 10:40:35,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 118 remaining) [2022-11-20 10:40:35,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 118 remaining) [2022-11-20 10:40:35,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 118 remaining) [2022-11-20 10:40:35,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 118 remaining) [2022-11-20 10:40:35,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (108 of 118 remaining) [2022-11-20 10:40:35,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 118 remaining) [2022-11-20 10:40:35,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 118 remaining) [2022-11-20 10:40:35,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 118 remaining) [2022-11-20 10:40:35,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 118 remaining) [2022-11-20 10:40:35,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (103 of 118 remaining) [2022-11-20 10:40:35,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 118 remaining) [2022-11-20 10:40:35,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 118 remaining) [2022-11-20 10:40:35,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 118 remaining) [2022-11-20 10:40:35,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 118 remaining) [2022-11-20 10:40:35,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 118 remaining) [2022-11-20 10:40:35,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 118 remaining) [2022-11-20 10:40:35,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 118 remaining) [2022-11-20 10:40:35,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 118 remaining) [2022-11-20 10:40:35,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 118 remaining) [2022-11-20 10:40:35,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 118 remaining) [2022-11-20 10:40:35,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 118 remaining) [2022-11-20 10:40:35,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 118 remaining) [2022-11-20 10:40:35,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 118 remaining) [2022-11-20 10:40:35,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 118 remaining) [2022-11-20 10:40:35,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 118 remaining) [2022-11-20 10:40:35,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 118 remaining) [2022-11-20 10:40:35,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 118 remaining) [2022-11-20 10:40:35,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 118 remaining) [2022-11-20 10:40:35,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 118 remaining) [2022-11-20 10:40:35,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 118 remaining) [2022-11-20 10:40:35,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 118 remaining) [2022-11-20 10:40:35,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 118 remaining) [2022-11-20 10:40:35,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 118 remaining) [2022-11-20 10:40:35,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 118 remaining) [2022-11-20 10:40:35,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (78 of 118 remaining) [2022-11-20 10:40:35,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 118 remaining) [2022-11-20 10:40:35,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 118 remaining) [2022-11-20 10:40:35,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 118 remaining) [2022-11-20 10:40:35,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 118 remaining) [2022-11-20 10:40:35,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 118 remaining) [2022-11-20 10:40:35,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 118 remaining) [2022-11-20 10:40:35,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 118 remaining) [2022-11-20 10:40:35,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 118 remaining) [2022-11-20 10:40:35,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 118 remaining) [2022-11-20 10:40:35,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 118 remaining) [2022-11-20 10:40:35,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (67 of 118 remaining) [2022-11-20 10:40:35,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 118 remaining) [2022-11-20 10:40:35,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 118 remaining) [2022-11-20 10:40:35,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 118 remaining) [2022-11-20 10:40:35,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 118 remaining) [2022-11-20 10:40:35,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (62 of 118 remaining) [2022-11-20 10:40:35,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 118 remaining) [2022-11-20 10:40:35,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 118 remaining) [2022-11-20 10:40:35,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 118 remaining) [2022-11-20 10:40:35,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 118 remaining) [2022-11-20 10:40:35,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 118 remaining) [2022-11-20 10:40:35,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 118 remaining) [2022-11-20 10:40:35,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 118 remaining) [2022-11-20 10:40:35,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 118 remaining) [2022-11-20 10:40:35,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 118 remaining) [2022-11-20 10:40:35,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 118 remaining) [2022-11-20 10:40:35,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 118 remaining) [2022-11-20 10:40:35,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 118 remaining) [2022-11-20 10:40:35,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 118 remaining) [2022-11-20 10:40:35,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 118 remaining) [2022-11-20 10:40:35,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 118 remaining) [2022-11-20 10:40:35,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 118 remaining) [2022-11-20 10:40:35,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 118 remaining) [2022-11-20 10:40:35,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 118 remaining) [2022-11-20 10:40:35,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 118 remaining) [2022-11-20 10:40:35,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 118 remaining) [2022-11-20 10:40:35,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 118 remaining) [2022-11-20 10:40:35,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 118 remaining) [2022-11-20 10:40:35,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 118 remaining) [2022-11-20 10:40:35,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 118 remaining) [2022-11-20 10:40:35,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 118 remaining) [2022-11-20 10:40:35,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 118 remaining) [2022-11-20 10:40:35,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 118 remaining) [2022-11-20 10:40:35,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 118 remaining) [2022-11-20 10:40:35,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 118 remaining) [2022-11-20 10:40:35,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 118 remaining) [2022-11-20 10:40:35,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 118 remaining) [2022-11-20 10:40:35,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 118 remaining) [2022-11-20 10:40:35,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (29 of 118 remaining) [2022-11-20 10:40:35,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 118 remaining) [2022-11-20 10:40:35,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 118 remaining) [2022-11-20 10:40:35,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 118 remaining) [2022-11-20 10:40:35,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 118 remaining) [2022-11-20 10:40:35,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (24 of 118 remaining) [2022-11-20 10:40:35,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 118 remaining) [2022-11-20 10:40:35,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 118 remaining) [2022-11-20 10:40:35,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 118 remaining) [2022-11-20 10:40:35,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 118 remaining) [2022-11-20 10:40:35,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 118 remaining) [2022-11-20 10:40:35,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 118 remaining) [2022-11-20 10:40:35,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 118 remaining) [2022-11-20 10:40:35,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 118 remaining) [2022-11-20 10:40:35,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 118 remaining) [2022-11-20 10:40:35,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 118 remaining) [2022-11-20 10:40:35,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 118 remaining) [2022-11-20 10:40:35,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 118 remaining) [2022-11-20 10:40:35,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 118 remaining) [2022-11-20 10:40:35,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 118 remaining) [2022-11-20 10:40:35,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 118 remaining) [2022-11-20 10:40:35,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 118 remaining) [2022-11-20 10:40:35,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 118 remaining) [2022-11-20 10:40:35,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 118 remaining) [2022-11-20 10:40:35,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 118 remaining) [2022-11-20 10:40:35,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 118 remaining) [2022-11-20 10:40:35,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 118 remaining) [2022-11-20 10:40:35,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 118 remaining) [2022-11-20 10:40:35,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 118 remaining) [2022-11-20 10:40:35,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 118 remaining) [2022-11-20 10:40:35,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 10:40:35,097 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:35,098 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:40:35,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:40:35,229 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:40:35,233 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:40:35,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 357 transitions, 735 flow [2022-11-20 10:40:35,233 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 357 transitions, 735 flow [2022-11-20 10:40:35,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 357 transitions, 735 flow [2022-11-20 10:40:35,347 INFO L130 PetriNetUnfolder]: 25/409 cut-off events. [2022-11-20 10:40:35,348 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 10:40:35,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 409 events. 25/409 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2170 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 330. Up to 8 conditions per place. [2022-11-20 10:40:35,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 77376 [2022-11-20 10:41:29,903 INFO L134 LiptonReduction]: Checked pairs total: 199591 [2022-11-20 10:41:29,903 INFO L136 LiptonReduction]: Total number of compositions: 307 [2022-11-20 10:41:29,904 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 170 places, 184 transitions, 389 flow [2022-11-20 10:42:08,469 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1238414 states, 935577 states have (on average 5.588456107835058) internal successors, (5228431), 1238413 states have internal predecessors, (5228431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:08,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:42:08,484 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;@f0c3419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:42:08,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 156 error locations.