./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a --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 cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c --- 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-b5237d8 [2022-11-21 14:00:41,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:00:41,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:00:41,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:00:41,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:00:41,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:00:41,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:00:41,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:00:41,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:00:41,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:00:41,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:00:41,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:00:41,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:00:41,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:00:41,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:00:41,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:00:41,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:00:41,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:00:41,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:00:41,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:00:41,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:00:41,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:00:41,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:00:41,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:00:41,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:00:41,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:00:41,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:00:41,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:00:41,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:00:41,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:00:41,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:00:41,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:00:41,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:00:41,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:00:41,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:00:41,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:00:41,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:00:41,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:00:41,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:00:41,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:00:41,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:00:41,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 14:00:41,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:00:41,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:00:41,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:00:41,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:00:41,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:00:41,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:00:41,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:00:41,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:00:41,898 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:00:41,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:00:41,900 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:00:41,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 14:00:41,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:00:41,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:00:41,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:00:41,901 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 14:00:41,902 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 14:00:41,902 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 14:00:41,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:00:41,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 14:00:41,903 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:00:41,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:00:41,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:00:41,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:00:41,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:00:41,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:00:41,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:00:41,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:00:41,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:00:41,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:00:41,906 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_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c [2022-11-21 14:00:42,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:00:42,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:00:42,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:00:42,310 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:00:42,311 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:00:42,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2022-11-21 14:00:45,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:00:46,153 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:00:46,154 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2022-11-21 14:00:46,170 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/data/d2cfc2a6a/fb2b7aaeec754e4a87c3a91beababf7a/FLAGdac6f8b32 [2022-11-21 14:00:46,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/data/d2cfc2a6a/fb2b7aaeec754e4a87c3a91beababf7a [2022-11-21 14:00:46,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:00:46,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:00:46,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:00:46,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:00:46,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:00:46,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5375c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46, skipping insertion in model container [2022-11-21 14:00:46,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:00:46,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:00:46,689 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_6ab68485-6a8c-4eb5-babf-406b55ea229f/sv-benchmarks/c/list-ext-properties/simple-ext_1.i[23274,23287] [2022-11-21 14:00:46,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:00:46,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:00:46,766 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_6ab68485-6a8c-4eb5-babf-406b55ea229f/sv-benchmarks/c/list-ext-properties/simple-ext_1.i[23274,23287] [2022-11-21 14:00:46,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:00:46,807 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:00:46,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46 WrapperNode [2022-11-21 14:00:46,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:00:46,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:00:46,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:00:46,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:00:46,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,873 INFO L138 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2022-11-21 14:00:46,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:00:46,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:00:46,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:00:46,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:00:46,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:00:46,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:00:46,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:00:46,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:00:46,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (1/1) ... [2022-11-21 14:00:46,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:00:46,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:46,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:00:46,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:00:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-21 14:00:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-21 14:00:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 14:00:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:00:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 14:00:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:00:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 14:00:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 14:00:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:00:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:00:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:00:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:00:47,163 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:00:47,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:00:47,214 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-21 14:00:47,629 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:00:47,638 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:00:47,645 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 14:00:47,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:47 BoogieIcfgContainer [2022-11-21 14:00:47,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:00:47,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:00:47,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:00:47,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:00:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:00:46" (1/3) ... [2022-11-21 14:00:47,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2623d7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:47, skipping insertion in model container [2022-11-21 14:00:47,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:46" (2/3) ... [2022-11-21 14:00:47,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2623d7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:47, skipping insertion in model container [2022-11-21 14:00:47,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:47" (3/3) ... [2022-11-21 14:00:47,666 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-ext_1.i [2022-11-21 14:00:47,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:00:47,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-11-21 14:00:47,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:00:47,787 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;@cfecda8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:00:47,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-21 14:00:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 34 states have (on average 1.911764705882353) internal successors, (65), 56 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 14:00:47,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:47,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 14:00:47,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517416, now seen corresponding path program 1 times [2022-11-21 14:00:47,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:47,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814492596] [2022-11-21 14:00:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:48,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814492596] [2022-11-21 14:00:48,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814492596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:48,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:48,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:00:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426110717] [2022-11-21 14:00:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:48,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 14:00:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 14:00:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 14:00:48,107 INFO L87 Difference]: Start difference. First operand has 58 states, 34 states have (on average 1.911764705882353) internal successors, (65), 56 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-21 14:00:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:48,128 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-11-21 14:00:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 14:00:48,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-11-21 14:00:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:48,144 INFO L225 Difference]: With dead ends: 58 [2022-11-21 14:00:48,144 INFO L226 Difference]: Without dead ends: 52 [2022-11-21 14:00:48,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 14:00:48,152 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:48,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:00:48,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-21 14:00:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-21 14:00:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2022-11-21 14:00:48,210 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 6 [2022-11-21 14:00:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:48,212 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2022-11-21 14:00:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-21 14:00:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2022-11-21 14:00:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 14:00:48,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:48,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:48,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:00:48,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 620871745, now seen corresponding path program 1 times [2022-11-21 14:00:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41932308] [2022-11-21 14:00:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:48,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:48,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41932308] [2022-11-21 14:00:48,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41932308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:48,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:48,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:48,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429085187] [2022-11-21 14:00:48,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:48,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:48,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:48,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:48,488 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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) [2022-11-21 14:00:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:48,750 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2022-11-21 14:00:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:00:48,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 [2022-11-21 14:00:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:48,785 INFO L225 Difference]: With dead ends: 70 [2022-11-21 14:00:48,786 INFO L226 Difference]: Without dead ends: 70 [2022-11-21 14:00:48,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:00:48,787 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 96 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:48,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 31 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:00:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-21 14:00:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2022-11-21 14:00:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.675) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2022-11-21 14:00:48,795 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 8 [2022-11-21 14:00:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:48,801 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2022-11-21 14:00:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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) [2022-11-21 14:00:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2022-11-21 14:00:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 14:00:48,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:48,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:48,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 14:00:48,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash 620871746, now seen corresponding path program 1 times [2022-11-21 14:00:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:48,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082311411] [2022-11-21 14:00:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082311411] [2022-11-21 14:00:49,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082311411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:49,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:49,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:49,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67769444] [2022-11-21 14:00:49,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:49,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:49,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:49,059 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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) [2022-11-21 14:00:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:49,213 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2022-11-21 14:00:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 [2022-11-21 14:00:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:49,217 INFO L225 Difference]: With dead ends: 77 [2022-11-21 14:00:49,217 INFO L226 Difference]: Without dead ends: 77 [2022-11-21 14:00:49,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:00:49,219 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 102 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:49,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 33 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:00:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-21 14:00:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2022-11-21 14:00:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 49 states have (on average 1.489795918367347) internal successors, (73), 64 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-11-21 14:00:49,232 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 8 [2022-11-21 14:00:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:49,232 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-11-21 14:00:49,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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) [2022-11-21 14:00:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-11-21 14:00:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 14:00:49,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:49,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:49,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 14:00:49,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash -382774458, now seen corresponding path program 1 times [2022-11-21 14:00:49,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:49,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27041731] [2022-11-21 14:00:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27041731] [2022-11-21 14:00:49,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27041731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:49,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:49,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:00:49,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077414785] [2022-11-21 14:00:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:49,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:00:49,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:00:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:00:49,651 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:50,111 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2022-11-21 14:00:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:00:50,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 14:00:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:50,118 INFO L225 Difference]: With dead ends: 140 [2022-11-21 14:00:50,118 INFO L226 Difference]: Without dead ends: 140 [2022-11-21 14:00:50,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:00:50,123 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:50,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 127 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:00:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-21 14:00:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 69. [2022-11-21 14:00:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.471698113207547) internal successors, (78), 68 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-11-21 14:00:50,141 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 14 [2022-11-21 14:00:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:50,141 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-11-21 14:00:50,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-11-21 14:00:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 14:00:50,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:50,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:50,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:00:50,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1017634056, now seen corresponding path program 1 times [2022-11-21 14:00:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:50,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776523682] [2022-11-21 14:00:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:50,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:50,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776523682] [2022-11-21 14:00:50,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776523682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:50,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:50,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 14:00:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016061968] [2022-11-21 14:00:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:50,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:50,245 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:50,356 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-11-21 14:00:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 14:00:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:50,358 INFO L225 Difference]: With dead ends: 76 [2022-11-21 14:00:50,359 INFO L226 Difference]: Without dead ends: 76 [2022-11-21 14:00:50,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:00:50,362 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 86 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:50,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 52 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:00:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-21 14:00:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2022-11-21 14:00:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-21 14:00:50,379 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 15 [2022-11-21 14:00:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:50,380 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-21 14:00:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-21 14:00:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 14:00:50,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:50,381 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:00:50,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -90857936, now seen corresponding path program 1 times [2022-11-21 14:00:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:50,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698792541] [2022-11-21 14:00:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:50,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:50,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698792541] [2022-11-21 14:00:50,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698792541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120215762] [2022-11-21 14:00:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:50,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:00:50,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 14:00:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:51,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 14:00:51,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:51,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:00:51,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:00:51,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:00:51,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:00:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:51,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:00:51,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-11-21 14:00:51,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:51,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:52,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120215762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:00:52,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:00:52,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2022-11-21 14:00:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741882051] [2022-11-21 14:00:52,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:00:52,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 14:00:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 14:00:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:00:52,049 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:52,532 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2022-11-21 14:00:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:00:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 14:00:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:52,536 INFO L225 Difference]: With dead ends: 100 [2022-11-21 14:00:52,536 INFO L226 Difference]: Without dead ends: 100 [2022-11-21 14:00:52,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:00:52,538 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 206 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:52,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 162 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:00:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-21 14:00:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 72. [2022-11-21 14:00:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 71 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-11-21 14:00:52,554 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 17 [2022-11-21 14:00:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:52,555 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-11-21 14:00:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-11-21 14:00:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 14:00:52,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:52,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:52,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 14:00:52,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 14:00:52,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1332204603, now seen corresponding path program 1 times [2022-11-21 14:00:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232941251] [2022-11-21 14:00:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:52,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:52,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232941251] [2022-11-21 14:00:52,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232941251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:52,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:52,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:52,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764288459] [2022-11-21 14:00:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:52,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:52,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:52,995 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:53,141 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-11-21 14:00:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:00:53,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 14:00:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:53,142 INFO L225 Difference]: With dead ends: 74 [2022-11-21 14:00:53,142 INFO L226 Difference]: Without dead ends: 74 [2022-11-21 14:00:53,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:00:53,143 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:53,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 123 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:00:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-21 14:00:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2022-11-21 14:00:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-11-21 14:00:53,148 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17 [2022-11-21 14:00:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:53,148 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-11-21 14:00:53,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-11-21 14:00:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 14:00:53,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:53,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:53,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:00:53,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1332204604, now seen corresponding path program 1 times [2022-11-21 14:00:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:53,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359936842] [2022-11-21 14:00:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:53,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:53,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359936842] [2022-11-21 14:00:53,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359936842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:53,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:53,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427575653] [2022-11-21 14:00:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:53,355 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:53,557 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2022-11-21 14:00:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:00:53,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 14:00:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:53,558 INFO L225 Difference]: With dead ends: 70 [2022-11-21 14:00:53,558 INFO L226 Difference]: Without dead ends: 70 [2022-11-21 14:00:53,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:00:53,559 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:53,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 144 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:00:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-21 14:00:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2022-11-21 14:00:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-11-21 14:00:53,563 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 17 [2022-11-21 14:00:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:53,563 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-11-21 14:00:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-11-21 14:00:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 14:00:53,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:53,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:53,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:00:53,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:53,565 INFO L85 PathProgramCache]: Analyzing trace with hash 76906689, now seen corresponding path program 1 times [2022-11-21 14:00:53,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:53,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072699387] [2022-11-21 14:00:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:00:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:53,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072699387] [2022-11-21 14:00:53,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072699387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:53,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:53,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068085562] [2022-11-21 14:00:53,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:53,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:53,615 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:53,682 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-11-21 14:00:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-21 14:00:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:53,683 INFO L225 Difference]: With dead ends: 70 [2022-11-21 14:00:53,683 INFO L226 Difference]: Without dead ends: 70 [2022-11-21 14:00:53,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:00:53,684 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:53,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 39 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:00:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-21 14:00:53,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2022-11-21 14:00:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 60 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-21 14:00:53,688 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 22 [2022-11-21 14:00:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:53,689 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-21 14:00:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-21 14:00:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 14:00:53,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:53,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:00:53,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash -296680512, now seen corresponding path program 1 times [2022-11-21 14:00:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:53,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949042263] [2022-11-21 14:00:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949042263] [2022-11-21 14:00:54,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949042263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610114668] [2022-11-21 14:00:54,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:54,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:00:54,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 14:00:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:54,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 14:00:54,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:54,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:00:54,379 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:00:54,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:00:54,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:00:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:54,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:00:54,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-21 14:00:54,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:00:54,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:00:54,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:00:54,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:54,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-21 14:00:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:54,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:00:55,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:55,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-21 14:00:55,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:55,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-21 14:00:55,649 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 9 treesize of output 7 [2022-11-21 14:00:55,666 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 14:00:55,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 14:00:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:55,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610114668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:00:55,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:00:55,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2022-11-21 14:00:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112128347] [2022-11-21 14:00:55,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:00:55,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 14:00:55,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 14:00:55,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=750, Unknown=10, NotChecked=0, Total=870 [2022-11-21 14:00:55,940 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:58,099 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2022-11-21 14:00:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 14:00:58,100 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 0 states have call successors, (0), 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 23 [2022-11-21 14:00:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:58,102 INFO L225 Difference]: With dead ends: 135 [2022-11-21 14:00:58,103 INFO L226 Difference]: Without dead ends: 135 [2022-11-21 14:00:58,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=364, Invalid=1510, Unknown=18, NotChecked=0, Total=1892 [2022-11-21 14:00:58,105 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 249 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 79 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:58,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 401 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 729 Invalid, 11 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 14:00:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-21 14:00:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2022-11-21 14:00:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.25) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2022-11-21 14:00:58,127 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 23 [2022-11-21 14:00:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:58,128 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2022-11-21 14:00:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2022-11-21 14:00:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 14:00:58,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:58,129 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:58,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 14:00:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:58,331 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:00:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1909738955, now seen corresponding path program 1 times [2022-11-21 14:00:58,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:58,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692093701] [2022-11-21 14:00:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:00:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692093701] [2022-11-21 14:00:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692093701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281727095] [2022-11-21 14:00:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:58,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:58,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:00:58,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 14:00:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:58,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 14:00:58,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:58,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:00:58,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:00:59,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:59,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-11-21 14:00:59,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:59,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-11-21 14:00:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:59,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:00,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:00,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 81 [2022-11-21 14:01:00,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:00,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 88 [2022-11-21 14:01:00,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:00,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 80 [2022-11-21 14:01:00,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:00,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 76 [2022-11-21 14:01:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:00,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281727095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:00,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:00,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 27 [2022-11-21 14:01:00,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975692833] [2022-11-21 14:01:00,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 14:01:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:00,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 14:01:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-11-21 14:01:00,944 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:02,338 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2022-11-21 14:01:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:01:02,339 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 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 25 [2022-11-21 14:01:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:02,340 INFO L225 Difference]: With dead ends: 110 [2022-11-21 14:01:02,340 INFO L226 Difference]: Without dead ends: 110 [2022-11-21 14:01:02,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=1191, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 14:01:02,342 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 299 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:02,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 229 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:01:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-21 14:01:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2022-11-21 14:01:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 94 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2022-11-21 14:01:02,348 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 25 [2022-11-21 14:01:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:02,348 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2022-11-21 14:01:02,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2022-11-21 14:01:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 14:01:02,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:02,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:02,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 14:01:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:02,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:02,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash -927635976, now seen corresponding path program 1 times [2022-11-21 14:01:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:02,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079850934] [2022-11-21 14:01:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:01:02,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079850934] [2022-11-21 14:01:02,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079850934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086235616] [2022-11-21 14:01:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:02,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:02,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:02,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 14:01:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 14:01:02,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:02,892 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 13 treesize of output 9 [2022-11-21 14:01:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:01:02,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:01:02,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086235616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:02,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:02,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-11-21 14:01:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294893029] [2022-11-21 14:01:02,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:01:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:01:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:01:02,974 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:03,107 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-21 14:01:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:01:03,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 26 [2022-11-21 14:01:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:03,108 INFO L225 Difference]: With dead ends: 105 [2022-11-21 14:01:03,109 INFO L226 Difference]: Without dead ends: 86 [2022-11-21 14:01:03,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:01:03,110 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:03,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 86 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:01:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-21 14:01:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-21 14:01:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 85 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-11-21 14:01:03,114 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 26 [2022-11-21 14:01:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:03,114 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-11-21 14:01:03,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-11-21 14:01:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 14:01:03,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:03,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:03,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-21 14:01:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 14:01:03,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash 638411638, now seen corresponding path program 1 times [2022-11-21 14:01:03,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:03,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687852596] [2022-11-21 14:01:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:03,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:03,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687852596] [2022-11-21 14:01:03,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687852596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:03,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394547034] [2022-11-21 14:01:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:03,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:03,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:03,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:03,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 14:01:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:04,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 14:01:04,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:04,137 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:01:04,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:01:04,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:04,446 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:04,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-21 14:01:04,483 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:04,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-21 14:01:04,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:04,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2022-11-21 14:01:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:04,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:05,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:05,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-21 14:01:05,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:05,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-11-21 14:01:05,260 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 13 treesize of output 9 [2022-11-21 14:01:08,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:08,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 381 [2022-11-21 14:01:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:16,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394547034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:16,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:16,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-11-21 14:01:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602203881] [2022-11-21 14:01:16,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:16,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 14:01:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 14:01:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=949, Unknown=5, NotChecked=0, Total=1122 [2022-11-21 14:01:16,747 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 34 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:17,793 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2022-11-21 14:01:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:01:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 26 [2022-11-21 14:01:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:17,795 INFO L225 Difference]: With dead ends: 140 [2022-11-21 14:01:17,795 INFO L226 Difference]: Without dead ends: 140 [2022-11-21 14:01:17,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=312, Invalid=1405, Unknown=5, NotChecked=0, Total=1722 [2022-11-21 14:01:17,797 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 468 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:17,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 341 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 14:01:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-21 14:01:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2022-11-21 14:01:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 95 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2022-11-21 14:01:17,802 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 26 [2022-11-21 14:01:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:17,802 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2022-11-21 14:01:17,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2022-11-21 14:01:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 14:01:17,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:17,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 14:01:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 14:01:18,011 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 638411639, now seen corresponding path program 1 times [2022-11-21 14:01:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359289697] [2022-11-21 14:01:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359289697] [2022-11-21 14:01:18,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359289697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410894124] [2022-11-21 14:01:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:18,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:18,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:18,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:18,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 14:01:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:18,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-21 14:01:18,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:18,873 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 6 treesize of output 5 [2022-11-21 14:01:18,889 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:01:18,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:01:18,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:18,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:19,180 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:19,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-21 14:01:19,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:19,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:01:19,226 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:19,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-21 14:01:19,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 14:01:19,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:19,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-21 14:01:19,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:19,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:19,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 16 [2022-11-21 14:01:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:19,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:20,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:20,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-21 14:01:20,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:20,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-21 14:01:20,405 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 [2022-11-21 14:01:20,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:20,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-21 14:01:20,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:20,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-21 14:01:20,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:20,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:20,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:20,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-21 14:01:20,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:20,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:20,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-21 14:01:20,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:20,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 129 [2022-11-21 14:01:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:21,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410894124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:21,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:21,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2022-11-21 14:01:21,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677683607] [2022-11-21 14:01:21,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:21,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 14:01:21,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 14:01:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1024, Unknown=5, NotChecked=0, Total=1190 [2022-11-21 14:01:21,872 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:23,552 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2022-11-21 14:01:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 14:01:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 states have internal predecessors, (74), 0 states have call successors, (0), 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 26 [2022-11-21 14:01:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:23,554 INFO L225 Difference]: With dead ends: 143 [2022-11-21 14:01:23,554 INFO L226 Difference]: Without dead ends: 143 [2022-11-21 14:01:23,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=436, Invalid=2009, Unknown=5, NotChecked=0, Total=2450 [2022-11-21 14:01:23,556 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 438 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:23,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 420 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:01:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-21 14:01:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2022-11-21 14:01:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2022-11-21 14:01:23,561 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 26 [2022-11-21 14:01:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:23,562 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2022-11-21 14:01:23,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2022-11-21 14:01:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 14:01:23,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:23,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:23,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 14:01:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 14:01:23,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash -666737801, now seen corresponding path program 1 times [2022-11-21 14:01:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665895283] [2022-11-21 14:01:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665895283] [2022-11-21 14:01:24,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665895283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253725144] [2022-11-21 14:01:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:24,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:24,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:24,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 14:01:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:24,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-21 14:01:24,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:25,076 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:01:25,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:01:25,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:25,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:25,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:01:25,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:01:25,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:01:25,319 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:25,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2022-11-21 14:01:25,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 14:01:25,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-11-21 14:01:25,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:25,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-21 14:01:25,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:25,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:25,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 18 [2022-11-21 14:01:25,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:01:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:25,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:25,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 458 treesize of output 414 [2022-11-21 14:01:26,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:26,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-21 14:01:26,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:26,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-21 14:01:26,962 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 11 treesize of output 7 [2022-11-21 14:01:27,013 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 14:01:27,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-11-21 14:01:27,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:27,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 180 [2022-11-21 14:01:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:27,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253725144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:27,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:27,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 32 [2022-11-21 14:01:27,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757834455] [2022-11-21 14:01:27,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:27,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 14:01:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:27,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 14:01:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=880, Unknown=1, NotChecked=0, Total=992 [2022-11-21 14:01:27,944 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:29,499 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2022-11-21 14:01:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:01:29,500 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 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 28 [2022-11-21 14:01:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:29,501 INFO L225 Difference]: With dead ends: 139 [2022-11-21 14:01:29,501 INFO L226 Difference]: Without dead ends: 139 [2022-11-21 14:01:29,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=269, Invalid=1536, Unknown=1, NotChecked=0, Total=1806 [2022-11-21 14:01:29,502 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 301 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:29,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 412 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 14:01:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-21 14:01:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2022-11-21 14:01:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-11-21 14:01:29,506 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 28 [2022-11-21 14:01:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:29,507 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-11-21 14:01:29,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-11-21 14:01:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 14:01:29,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:29,508 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:29,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 14:01:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 14:01:29,715 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1442763871, now seen corresponding path program 2 times [2022-11-21 14:01:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:29,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491123493] [2022-11-21 14:01:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:30,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:30,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491123493] [2022-11-21 14:01:30,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491123493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190854512] [2022-11-21 14:01:30,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:01:30,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:30,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:30,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:30,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 14:01:31,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:01:31,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:01:31,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-21 14:01:31,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:31,146 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:01:31,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:01:31,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:31,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:31,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:01:31,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:01:31,333 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:01:31,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2022-11-21 14:01:31,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-11-21 14:01:31,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:31,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:31,928 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-21 14:01:31,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 42 [2022-11-21 14:01:31,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:31,942 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 14:01:31,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2022-11-21 14:01:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:31,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:32,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:32,636 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2022-11-21 14:01:32,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:32,646 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 53 [2022-11-21 14:01:32,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:32,682 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2022-11-21 14:01:32,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:32,692 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2022-11-21 14:01:33,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:33,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 75 [2022-11-21 14:01:33,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:33,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2022-11-21 14:01:33,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:33,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 195 [2022-11-21 14:01:34,020 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:34,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 208 [2022-11-21 14:01:34,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:34,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 171 [2022-11-21 14:01:34,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:34,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 176 [2022-11-21 14:01:38,646 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 14:01:38,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 1 [2022-11-21 14:01:39,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:39,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 112 [2022-11-21 14:01:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:39,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190854512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:39,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:39,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 18] total 34 [2022-11-21 14:01:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946234062] [2022-11-21 14:01:39,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:39,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 14:01:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 14:01:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=989, Unknown=13, NotChecked=0, Total=1122 [2022-11-21 14:01:39,529 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:51,330 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2022-11-21 14:01:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 14:01:51,331 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 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 31 [2022-11-21 14:01:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:51,332 INFO L225 Difference]: With dead ends: 131 [2022-11-21 14:01:51,332 INFO L226 Difference]: Without dead ends: 131 [2022-11-21 14:01:51,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=371, Invalid=2066, Unknown=13, NotChecked=0, Total=2450 [2022-11-21 14:01:51,334 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 374 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 57 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:51,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 441 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 687 Invalid, 9 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:01:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-21 14:01:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2022-11-21 14:01:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 99 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2022-11-21 14:01:51,338 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 31 [2022-11-21 14:01:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:51,338 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2022-11-21 14:01:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2022-11-21 14:01:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 14:01:51,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:51,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:51,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 14:01:51,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:51,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -482332814, now seen corresponding path program 1 times [2022-11-21 14:01:51,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:51,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061554619] [2022-11-21 14:01:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:52,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061554619] [2022-11-21 14:01:52,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061554619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:52,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648514897] [2022-11-21 14:01:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:52,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:52,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:52,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 14:01:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:52,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 14:01:52,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:52,561 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:01:52,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:01:52,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:52,853 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:52,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 34 [2022-11-21 14:01:52,897 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:01:52,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-21 14:01:53,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:53,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2022-11-21 14:01:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:01:53,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:53,544 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_562 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (or (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 1) 0) (<= 1 |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_562) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 4)) 0)))) is different from false [2022-11-21 14:01:53,716 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_562 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_83| Int)) (or (<= 1 |v_ULTIMATE.start_main_~p~0#1.offset_83|) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_562) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_83| 4)) 0)) (<= (+ |v_ULTIMATE.start_main_~p~0#1.offset_83| 1) 0))) is different from false [2022-11-21 14:01:53,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:53,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-21 14:01:53,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:53,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2022-11-21 14:01:53,754 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 22 treesize of output 18 [2022-11-21 14:01:53,998 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:53,999 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 34 treesize of output 52 [2022-11-21 14:01:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2022-11-21 14:01:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648514897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:54,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:01:54,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2022-11-21 14:01:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636383061] [2022-11-21 14:01:54,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 14:01:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 14:01:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=844, Unknown=10, NotChecked=122, Total=1122 [2022-11-21 14:01:54,141 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:56,060 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2022-11-21 14:01:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 14:01:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 35 [2022-11-21 14:01:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:56,061 INFO L225 Difference]: With dead ends: 142 [2022-11-21 14:01:56,061 INFO L226 Difference]: Without dead ends: 134 [2022-11-21 14:01:56,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=542, Invalid=2318, Unknown=10, NotChecked=210, Total=3080 [2022-11-21 14:01:56,064 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 555 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:56,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 282 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 465 Invalid, 0 Unknown, 190 Unchecked, 0.6s Time] [2022-11-21 14:01:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-21 14:01:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 108. [2022-11-21 14:01:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 107 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2022-11-21 14:01:56,069 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 35 [2022-11-21 14:01:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:56,069 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2022-11-21 14:01:56,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2022-11-21 14:01:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 14:01:56,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:56,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:56,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 14:01:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:56,278 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:01:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1083714800, now seen corresponding path program 3 times [2022-11-21 14:01:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146560024] [2022-11-21 14:01:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146560024] [2022-11-21 14:01:57,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146560024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677747573] [2022-11-21 14:01:57,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:01:57,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:01:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:01:57,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:01:57,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 14:01:57,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 14:01:57,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:01:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-21 14:01:57,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:57,618 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:01:57,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:01:57,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:01:57,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:01:57,787 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:01:57,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:01:57,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:01:58,132 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-21 14:01:58,132 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2022-11-21 14:01:58,158 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 16 treesize of output 8 [2022-11-21 14:01:58,299 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-21 14:01:58,299 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 60 [2022-11-21 14:01:58,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:01:58,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:58,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 16 [2022-11-21 14:01:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:58,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:59,097 INFO L321 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2022-11-21 14:01:59,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2022-11-21 14:01:59,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:59,348 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-11-21 14:01:59,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:59,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-21 14:01:59,735 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:59,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 157 [2022-11-21 14:01:59,747 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 142 treesize of output 126 [2022-11-21 14:01:59,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:59,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 108 [2022-11-21 14:01:59,787 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 14:01:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 14:02:00,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:00,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 129 [2022-11-21 14:02:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:00,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677747573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:02:00,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:02:00,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 39 [2022-11-21 14:02:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218700277] [2022-11-21 14:02:00,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:02:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-21 14:02:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-21 14:02:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1366, Unknown=11, NotChecked=0, Total=1560 [2022-11-21 14:02:00,621 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 40 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:02:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:03,061 INFO L93 Difference]: Finished difference Result 165 states and 178 transitions. [2022-11-21 14:02:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 14:02:03,062 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 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 35 [2022-11-21 14:02:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:03,064 INFO L225 Difference]: With dead ends: 165 [2022-11-21 14:02:03,064 INFO L226 Difference]: Without dead ends: 165 [2022-11-21 14:02:03,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=472, Invalid=2487, Unknown=11, NotChecked=0, Total=2970 [2022-11-21 14:02:03,066 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 423 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:03,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 460 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:02:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-21 14:02:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 112. [2022-11-21 14:02:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 103 states have (on average 1.203883495145631) internal successors, (124), 111 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:02:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2022-11-21 14:02:03,071 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 35 [2022-11-21 14:02:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:03,071 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2022-11-21 14:02:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:02:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2022-11-21 14:02:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 14:02:03,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:03,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:03,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:03,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 14:02:03,284 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:02:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1083714801, now seen corresponding path program 2 times [2022-11-21 14:02:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214408949] [2022-11-21 14:02:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:03,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:04,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:04,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214408949] [2022-11-21 14:02:04,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214408949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:04,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188101842] [2022-11-21 14:02:04,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:02:04,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:04,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:04,764 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:04,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 14:02:04,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:02:04,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:02:04,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-21 14:02:04,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:05,093 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:02:05,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:02:05,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:02:05,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:02:05,450 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:05,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 14:02:05,483 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:02:05,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-11-21 14:02:05,593 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:02:05,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:02:05,713 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:05,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 14:02:05,750 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-21 14:02:05,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-21 14:02:06,182 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:06,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 14:02:06,230 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-21 14:02:06,231 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2022-11-21 14:02:06,250 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 16 treesize of output 8 [2022-11-21 14:02:06,456 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:06,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 14:02:06,500 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-21 14:02:06,501 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 73 [2022-11-21 14:02:06,563 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-21 14:02:06,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:02:06,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-21 14:02:06,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:02:06,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:06,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 16 [2022-11-21 14:02:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:06,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:02:08,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:08,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 85 [2022-11-21 14:02:08,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:08,691 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-11-21 14:02:09,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:09,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 124 [2022-11-21 14:02:09,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:09,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 114 [2022-11-21 14:02:09,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:09,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 272 treesize of output 278 [2022-11-21 14:02:09,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:09,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 388 treesize of output 381 [2022-11-21 14:02:09,903 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 365 treesize of output 357 [2022-11-21 14:02:09,919 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 357 treesize of output 341 [2022-11-21 14:02:09,935 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 341 treesize of output 337 [2022-11-21 14:02:10,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:10,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 344 treesize of output 392 [2022-11-21 14:02:10,025 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 327 treesize of output 319 [2022-11-21 14:02:10,044 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 319 treesize of output 303 [2022-11-21 14:02:10,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:10,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 304 [2022-11-21 14:02:13,025 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:13,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 129 [2022-11-21 14:02:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:13,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188101842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:02:13,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:02:13,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 50 [2022-11-21 14:02:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130716716] [2022-11-21 14:02:13,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:02:13,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-21 14:02:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-21 14:02:13,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2268, Unknown=19, NotChecked=0, Total=2550 [2022-11-21 14:02:13,391 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 51 states, 50 states have (on average 2.02) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:02:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:17,472 INFO L93 Difference]: Finished difference Result 169 states and 182 transitions. [2022-11-21 14:02:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 14:02:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.02) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 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 35 [2022-11-21 14:02:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:17,474 INFO L225 Difference]: With dead ends: 169 [2022-11-21 14:02:17,474 INFO L226 Difference]: Without dead ends: 169 [2022-11-21 14:02:17,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=714, Invalid=4379, Unknown=19, NotChecked=0, Total=5112 [2022-11-21 14:02:17,476 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 401 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:17,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 582 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 14:02:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-21 14:02:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 114. [2022-11-21 14:02:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 105 states have (on average 1.2) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:02:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2022-11-21 14:02:17,481 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 35 [2022-11-21 14:02:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:17,481 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2022-11-21 14:02:17,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.02) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:02:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2022-11-21 14:02:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 14:02:17,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:17,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:17,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:17,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:17,691 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:02:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2067838577, now seen corresponding path program 2 times [2022-11-21 14:02:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:17,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539865802] [2022-11-21 14:02:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:19,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:19,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539865802] [2022-11-21 14:02:19,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539865802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:19,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932773565] [2022-11-21 14:02:19,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:02:19,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:19,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:19,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:19,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 14:02:19,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:02:19,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:02:19,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-21 14:02:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:19,824 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:02:19,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:02:19,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:02:19,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:02:20,373 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:20,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-21 14:02:20,379 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 [2022-11-21 14:02:20,417 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:02:20,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-21 14:02:20,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:02:20,598 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-21 14:02:20,598 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 20 treesize of output 22 [2022-11-21 14:02:20,756 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:20,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-21 14:02:20,786 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 [2022-11-21 14:02:20,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:02:20,815 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:02:20,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2022-11-21 14:02:20,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:02:21,297 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-21 14:02:21,297 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 71 [2022-11-21 14:02:21,315 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:02:21,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-11-21 14:02:21,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:21,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-21 14:02:21,393 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-21 14:02:21,393 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 99 [2022-11-21 14:02:21,412 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:02:21,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 103 [2022-11-21 14:02:21,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-11-21 14:02:21,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:02:21,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:02:21,771 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:02:21,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 65 treesize of output 30 [2022-11-21 14:02:21,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:02:21,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2022-11-21 14:02:21,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:02:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:21,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:02:23,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:23,247 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2022-11-21 14:02:23,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:23,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 65 [2022-11-21 14:02:23,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:23,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 121 [2022-11-21 14:02:23,303 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 45 treesize of output 27 [2022-11-21 14:02:23,364 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 30 treesize of output 22 [2022-11-21 14:02:23,397 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 10 treesize of output 6 [2022-11-21 14:02:24,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:24,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 146 [2022-11-21 14:02:24,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:24,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 136 [2022-11-21 14:02:24,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:24,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 338 treesize of output 247 [2022-11-21 14:02:24,931 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 227 treesize of output 219 [2022-11-21 14:02:24,942 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 219 treesize of output 203 [2022-11-21 14:02:24,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:24,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 518 treesize of output 518 [2022-11-21 14:02:25,018 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 483 treesize of output 467 [2022-11-21 14:02:25,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:25,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 467 treesize of output 408 [2022-11-21 14:02:25,069 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 399 treesize of output 383 [2022-11-21 14:02:25,102 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:25,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 383 treesize of output 356 [2022-11-21 14:02:38,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:02:38,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 192 treesize of output 600 [2022-11-21 14:03:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:33,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932773565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:33,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:03:33,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 49 [2022-11-21 14:03:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590901225] [2022-11-21 14:03:33,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-21 14:03:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-21 14:03:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2112, Unknown=16, NotChecked=0, Total=2352 [2022-11-21 14:03:33,357 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 49 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:40,521 INFO L93 Difference]: Finished difference Result 178 states and 191 transitions. [2022-11-21 14:03:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 14:03:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 49 states have internal predecessors, (96), 0 states have call successors, (0), 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 37 [2022-11-21 14:03:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:40,523 INFO L225 Difference]: With dead ends: 178 [2022-11-21 14:03:40,523 INFO L226 Difference]: Without dead ends: 178 [2022-11-21 14:03:40,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=570, Invalid=4524, Unknown=18, NotChecked=0, Total=5112 [2022-11-21 14:03:40,527 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 303 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 58 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:40,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 788 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2126 Invalid, 6 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 14:03:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-21 14:03:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2022-11-21 14:03:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2022-11-21 14:03:40,532 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 37 [2022-11-21 14:03:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:40,532 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2022-11-21 14:03:40,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 49 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2022-11-21 14:03:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 14:03:40,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:40,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:40,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:40,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:40,741 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:03:40,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -63445766, now seen corresponding path program 1 times [2022-11-21 14:03:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:40,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476941112] [2022-11-21 14:03:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:03:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476941112] [2022-11-21 14:03:41,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476941112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41235862] [2022-11-21 14:03:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:41,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:41,336 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:41,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 14:03:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:41,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 14:03:41,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:41,482 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 6 treesize of output 5 [2022-11-21 14:03:41,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:41,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 14:03:41,605 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:03:41,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:03:41,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:41,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-11-21 14:03:42,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:42,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-11-21 14:03:42,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:42,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 21 [2022-11-21 14:03:42,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 14:03:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:42,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:42,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:42,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-11-21 14:03:43,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:43,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2022-11-21 14:03:43,534 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:43,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 135 [2022-11-21 14:03:48,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:48,507 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 44 treesize of output 62 [2022-11-21 14:03:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:48,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41235862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:48,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:03:48,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 18] total 44 [2022-11-21 14:03:48,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027641122] [2022-11-21 14:03:48,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:48,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-21 14:03:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:48,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-21 14:03:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 14:03:48,970 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:54,172 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2022-11-21 14:03:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 14:03:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 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 39 [2022-11-21 14:03:54,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:54,174 INFO L225 Difference]: With dead ends: 138 [2022-11-21 14:03:54,174 INFO L226 Difference]: Without dead ends: 138 [2022-11-21 14:03:54,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1056, Invalid=5424, Unknown=0, NotChecked=0, Total=6480 [2022-11-21 14:03:54,176 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 820 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:54,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 311 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 14:03:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-21 14:03:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2022-11-21 14:03:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 116 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 130 transitions. [2022-11-21 14:03:54,180 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 130 transitions. Word has length 39 [2022-11-21 14:03:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:54,180 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 130 transitions. [2022-11-21 14:03:54,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:54,181 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 130 transitions. [2022-11-21 14:03:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 14:03:54,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:54,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:54,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:54,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-21 14:03:54,391 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:03:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -63445765, now seen corresponding path program 1 times [2022-11-21 14:03:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:54,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605948208] [2022-11-21 14:03:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:03:55,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:55,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605948208] [2022-11-21 14:03:55,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605948208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:55,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762717001] [2022-11-21 14:03:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:55,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:55,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:55,156 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:55,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 14:03:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 14:03:55,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:55,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:55,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2022-11-21 14:03:55,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:55,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2022-11-21 14:03:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:03:56,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:56,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:56,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2022-11-21 14:03:56,543 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 14:03:56,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-21 14:03:56,555 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-21 14:03:56,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2022-11-21 14:03:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:03:56,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762717001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:56,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:03:56,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 37 [2022-11-21 14:03:56,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141893590] [2022-11-21 14:03:56,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:56,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-21 14:03:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-21 14:03:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 14:03:56,669 INFO L87 Difference]: Start difference. First operand 117 states and 130 transitions. Second operand has 38 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:00,181 INFO L93 Difference]: Finished difference Result 154 states and 163 transitions. [2022-11-21 14:04:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 14:04:00,182 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 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 39 [2022-11-21 14:04:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:00,183 INFO L225 Difference]: With dead ends: 154 [2022-11-21 14:04:00,183 INFO L226 Difference]: Without dead ends: 154 [2022-11-21 14:04:00,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1123, Invalid=5197, Unknown=0, NotChecked=0, Total=6320 [2022-11-21 14:04:00,187 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 710 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:00,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 440 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 14:04:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-21 14:04:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2022-11-21 14:04:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 119 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2022-11-21 14:04:00,192 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 39 [2022-11-21 14:04:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:00,192 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2022-11-21 14:04:00,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2022-11-21 14:04:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 14:04:00,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:00,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:00,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:00,401 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-21 14:04:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash 267970341, now seen corresponding path program 4 times [2022-11-21 14:04:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:00,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506746737] [2022-11-21 14:04:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:00,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:01,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:01,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506746737] [2022-11-21 14:04:01,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506746737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:01,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579212813] [2022-11-21 14:04:01,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 14:04:01,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:01,820 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:01,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab68485-6a8c-4eb5-babf-406b55ea229f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 14:04:01,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 14:04:01,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:01,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-21 14:04:01,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:02,077 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:04:02,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:04:02,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:04:02,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:04:02,550 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:04:02,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-21 14:04:02,572 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 [2022-11-21 14:04:02,598 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 14:04:02,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-21 14:04:02,695 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-21 14:04:02,696 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 [2022-11-21 14:04:02,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:04:02,863 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 21 treesize of output 20 [2022-11-21 14:04:03,318 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-21 14:04:03,319 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 54 [2022-11-21 14:04:03,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:04:03,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:04:03,376 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-21 14:04:03,376 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 62 [2022-11-21 14:04:03,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-21 14:04:03,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:04:03,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-21 14:04:04,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:04:04,065 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-21 14:04:04,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 35 [2022-11-21 14:04:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:04,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:05,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:04:05,608 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2022-11-21 14:04:06,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:04:06,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-11-21 14:04:06,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:04:06,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 71 [2022-11-21 14:04:06,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:04:06,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 333 treesize of output 326 [2022-11-21 14:04:07,674 INFO L321 Elim1Store]: treesize reduction 390, result has 58.3 percent of original size [2022-11-21 14:04:07,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 5804 treesize of output 5627 [2022-11-21 14:04:08,005 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:04:08,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 5351 treesize of output 3799 [2022-11-21 14:04:08,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:04:08,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3656 treesize of output 3240 [2022-11-21 14:04:08,337 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 299 treesize of output 219 [2022-11-21 14:04:08,524 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 304 treesize of output 220