./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/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_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/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_a95f73f2-ca93-4190-b6aa-846da5463f9f/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 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 --- 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 17:29:11,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:29:11,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:29:11,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:29:11,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:29:11,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:29:11,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:29:11,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:29:11,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:29:11,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:29:11,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:29:11,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:29:11,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:29:11,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:29:11,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:29:11,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:29:11,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:29:11,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:29:11,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:29:11,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:29:11,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:29:11,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:29:11,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:29:11,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:29:11,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:29:11,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:29:11,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:29:11,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:29:11,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:29:11,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:29:11,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:29:11,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:29:11,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:29:11,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:29:11,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:29:11,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:29:11,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:29:11,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:29:11,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:29:11,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:29:11,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:29:11,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 17:29:11,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:29:11,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:29:11,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:29:11,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:29:11,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:29:11,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:29:11,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:29:11,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:29:11,658 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:29:11,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:29:11,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:29:11,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:29:11,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:29:11,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:29:11,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:29:11,660 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:29:11,660 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:29:11,660 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:29:11,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:29:11,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:29:11,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:29:11,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:29:11,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:29:11,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:29:11,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:29:11,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:29:11,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:29:11,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:29:11,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:29:11,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:29:11,663 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_a95f73f2-ca93-4190-b6aa-846da5463f9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 [2022-11-21 17:29:11,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:29:11,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:29:11,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:29:11,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:29:11,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:29:11,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2022-11-21 17:29:14,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:29:15,192 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:29:15,193 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2022-11-21 17:29:15,214 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/data/c994a8903/f5e3911a03484c8787c9db9e762ee65f/FLAG7d3278e6b [2022-11-21 17:29:15,229 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/data/c994a8903/f5e3911a03484c8787c9db9e762ee65f [2022-11-21 17:29:15,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:29:15,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:29:15,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:29:15,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:29:15,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:29:15,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e186ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15, skipping insertion in model container [2022-11-21 17:29:15,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:29:15,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:29:15,646 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_a95f73f2-ca93-4190-b6aa-846da5463f9f/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2022-11-21 17:29:15,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:29:15,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:29:15,738 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_a95f73f2-ca93-4190-b6aa-846da5463f9f/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2022-11-21 17:29:15,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:29:15,771 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:29:15,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15 WrapperNode [2022-11-21 17:29:15,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:29:15,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:29:15,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:29:15,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:29:15,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,827 INFO L138 Inliner]: procedures = 122, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2022-11-21 17:29:15,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:29:15,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:29:15,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:29:15,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:29:15,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,855 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:29:15,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:29:15,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:29:15,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:29:15,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (1/1) ... [2022-11-21 17:29:15,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:29:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:15,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:29:15,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:29:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:29:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:29:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:29:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:29:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 17:29:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 17:29:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:29:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:29:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:29:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:29:16,061 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:29:16,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:29:16,474 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:29:16,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:29:16,481 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:29:16,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:16 BoogieIcfgContainer [2022-11-21 17:29:16,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:29:16,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:29:16,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:29:16,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:29:16,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:29:15" (1/3) ... [2022-11-21 17:29:16,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4264650a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:29:16, skipping insertion in model container [2022-11-21 17:29:16,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:15" (2/3) ... [2022-11-21 17:29:16,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4264650a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:29:16, skipping insertion in model container [2022-11-21 17:29:16,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:16" (3/3) ... [2022-11-21 17:29:16,492 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2022-11-21 17:29:16,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:29:16,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-11-21 17:29:16,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:29:16,555 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;@49f44020, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:29:16,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-21 17:29:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 49 states have (on average 2.0) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 17:29:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:29:16,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:16,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:29:16,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:16,572 INFO L85 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2022-11-21 17:29:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:16,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694060588] [2022-11-21 17:29:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:16,778 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 17:29:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:16,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694060588] [2022-11-21 17:29:16,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694060588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:16,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:16,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:29:16,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420948180] [2022-11-21 17:29:16,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:16,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:16,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:16,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:16,828 INFO L87 Difference]: Start difference. First operand has 85 states, 49 states have (on average 2.0) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:17,020 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2022-11-21 17:29:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:29:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:17,039 INFO L225 Difference]: With dead ends: 141 [2022-11-21 17:29:17,039 INFO L226 Difference]: Without dead ends: 136 [2022-11-21 17:29:17,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,044 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 84 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:17,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 164 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:29:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-21 17:29:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2022-11-21 17:29:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 17:29:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2022-11-21 17:29:17,078 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 5 [2022-11-21 17:29:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:17,078 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2022-11-21 17:29:17,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2022-11-21 17:29:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:29:17,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:17,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:29:17,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:29:17,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2022-11-21 17:29:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:17,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524779738] [2022-11-21 17:29:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:17,190 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 17:29:17,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:17,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524779738] [2022-11-21 17:29:17,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524779738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:17,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:17,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:29:17,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430092770] [2022-11-21 17:29:17,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,194 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:17,288 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2022-11-21 17:29:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:29:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:17,290 INFO L225 Difference]: With dead ends: 131 [2022-11-21 17:29:17,290 INFO L226 Difference]: Without dead ends: 131 [2022-11-21 17:29:17,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,291 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 76 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:17,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 165 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-21 17:29:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 72. [2022-11-21 17:29:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.702127659574468) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 17:29:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-11-21 17:29:17,300 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 5 [2022-11-21 17:29:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:17,300 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-11-21 17:29:17,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-11-21 17:29:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:29:17,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:17,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:29:17,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:29:17,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:17,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:17,303 INFO L85 PathProgramCache]: Analyzing trace with hash 889665583, now seen corresponding path program 1 times [2022-11-21 17:29:17,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:17,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566941054] [2022-11-21 17:29:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:17,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:17,391 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 17:29:17,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:17,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566941054] [2022-11-21 17:29:17,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566941054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:17,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:17,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:29:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955752104] [2022-11-21 17:29:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:17,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,395 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:17,411 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2022-11-21 17:29:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 17:29:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:17,416 INFO L225 Difference]: With dead ends: 84 [2022-11-21 17:29:17,416 INFO L226 Difference]: Without dead ends: 84 [2022-11-21 17:29:17,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,417 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:17,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-21 17:29:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2022-11-21 17:29:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.6875) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 17:29:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-11-21 17:29:17,424 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 6 [2022-11-21 17:29:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:17,425 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-11-21 17:29:17,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-11-21 17:29:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:29:17,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:17,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:17,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:29:17,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1228392914, now seen corresponding path program 1 times [2022-11-21 17:29:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145222590] [2022-11-21 17:29:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:17,576 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 17:29:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:17,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145222590] [2022-11-21 17:29:17,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145222590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:17,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:17,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:29:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787623131] [2022-11-21 17:29:17,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:17,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:17,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:17,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,579 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:17,597 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-11-21 17:29:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:17,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 17:29:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:17,599 INFO L225 Difference]: With dead ends: 81 [2022-11-21 17:29:17,599 INFO L226 Difference]: Without dead ends: 81 [2022-11-21 17:29:17,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:17,601 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:17,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-21 17:29:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-11-21 17:29:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.6) internal successors, (88), 79 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 17:29:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2022-11-21 17:29:17,608 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 11 [2022-11-21 17:29:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:17,608 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2022-11-21 17:29:17,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2022-11-21 17:29:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:29:17,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:17,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:17,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:29:17,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash -91353250, now seen corresponding path program 1 times [2022-11-21 17:29:17,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:17,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43294523] [2022-11-21 17:29:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43294523] [2022-11-21 17:29:17,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43294523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:17,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:17,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:29:17,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854633259] [2022-11-21 17:29:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:17,840 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 17:29:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:18,062 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-11-21 17:29:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:29:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 17:29:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:18,066 INFO L225 Difference]: With dead ends: 101 [2022-11-21 17:29:18,066 INFO L226 Difference]: Without dead ends: 101 [2022-11-21 17:29:18,067 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 17:29:18,076 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 255 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:18,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 93 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:29:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-21 17:29:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2022-11-21 17:29:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 73 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 17:29:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2022-11-21 17:29:18,082 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 15 [2022-11-21 17:29:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:18,083 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2022-11-21 17:29:18,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 17:29:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2022-11-21 17:29:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:29:18,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:18,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:18,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:29:18,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash -91353249, now seen corresponding path program 1 times [2022-11-21 17:29:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786685435] [2022-11-21 17:29:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:18,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786685435] [2022-11-21 17:29:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786685435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890134163] [2022-11-21 17:29:18,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:18,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:18,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:18,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:29:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:18,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:29:18,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:18,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:18,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890134163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:18,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:18,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-21 17:29:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076660164] [2022-11-21 17:29:18,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:18,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:18,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:18,473 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:18,495 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2022-11-21 17:29:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:29:18,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:29:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:18,497 INFO L225 Difference]: With dead ends: 98 [2022-11-21 17:29:18,498 INFO L226 Difference]: Without dead ends: 98 [2022-11-21 17:29:18,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:18,502 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 213 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-21 17:29:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-11-21 17:29:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.3875) internal successors, (111), 95 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 17:29:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-11-21 17:29:18,524 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 15 [2022-11-21 17:29:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:18,524 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-11-21 17:29:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-11-21 17:29:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 17:29:18,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:18,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:18,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:29:18,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:18,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 965941252, now seen corresponding path program 1 times [2022-11-21 17:29:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:18,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155800013] [2022-11-21 17:29:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:19,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155800013] [2022-11-21 17:29:19,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155800013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522030258] [2022-11-21 17:29:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:19,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:19,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:29:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:29:19,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:19,304 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 17:29:19,309 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 17:29:19,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:19,429 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 17:29:19,439 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:19,440 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 17:29:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:19,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:19,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522030258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:19,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:19,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2022-11-21 17:29:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927245087] [2022-11-21 17:29:19,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:19,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:29:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:29:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:29:19,962 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 17:29:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:20,169 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2022-11-21 17:29:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:29:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 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 20 [2022-11-21 17:29:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:20,170 INFO L225 Difference]: With dead ends: 120 [2022-11-21 17:29:20,170 INFO L226 Difference]: Without dead ends: 120 [2022-11-21 17:29:20,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:29:20,171 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 421 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:20,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 77 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-21 17:29:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2022-11-21 17:29:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 80 states have (on average 1.35) internal successors, (108), 94 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 17:29:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2022-11-21 17:29:20,177 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 20 [2022-11-21 17:29:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:20,177 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2022-11-21 17:29:20,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 17:29:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2022-11-21 17:29:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 17:29:20,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:20,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:20,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 17:29:20,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -671675920, now seen corresponding path program 2 times [2022-11-21 17:29:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629697919] [2022-11-21 17:29:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 17:29:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:20,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629697919] [2022-11-21 17:29:20,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629697919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:20,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562543518] [2022-11-21 17:29:20,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:29:20,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:20,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:20,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:20,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:29:20,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:29:20,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:20,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:29:20,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:20,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:20,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562543518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:20,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:20,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2022-11-21 17:29:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776215957] [2022-11-21 17:29:20,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:20,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:29:20,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:29:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:29:20,900 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 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 17:29:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:21,051 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-21 17:29:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:29:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 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 42 [2022-11-21 17:29:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:21,053 INFO L225 Difference]: With dead ends: 105 [2022-11-21 17:29:21,053 INFO L226 Difference]: Without dead ends: 105 [2022-11-21 17:29:21,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:29:21,055 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 185 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:21,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 173 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-21 17:29:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-21 17:29:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 104 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:29:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2022-11-21 17:29:21,073 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 42 [2022-11-21 17:29:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:21,074 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2022-11-21 17:29:21,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 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 17:29:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2022-11-21 17:29:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 17:29:21,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:21,076 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:21,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 17:29:21,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:21,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -719682373, now seen corresponding path program 1 times [2022-11-21 17:29:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:21,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660429346] [2022-11-21 17:29:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:21,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 17:29:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:21,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660429346] [2022-11-21 17:29:21,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660429346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:21,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:21,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:29:21,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238382298] [2022-11-21 17:29:21,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:21,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:21,804 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:29:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:22,018 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2022-11-21 17:29:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:29:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 55 [2022-11-21 17:29:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:22,020 INFO L225 Difference]: With dead ends: 140 [2022-11-21 17:29:22,020 INFO L226 Difference]: Without dead ends: 140 [2022-11-21 17:29:22,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:29:22,021 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 344 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:22,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 65 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:29:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-21 17:29:22,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2022-11-21 17:29:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 130 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 17:29:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2022-11-21 17:29:22,031 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 55 [2022-11-21 17:29:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:22,033 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2022-11-21 17:29:22,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:29:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2022-11-21 17:29:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 17:29:22,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:22,038 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:22,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:29:22,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:22,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 109308747, now seen corresponding path program 1 times [2022-11-21 17:29:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:22,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644379657] [2022-11-21 17:29:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 17:29:22,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:22,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644379657] [2022-11-21 17:29:22,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644379657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:22,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:22,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:29:22,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524686769] [2022-11-21 17:29:22,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:22,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:22,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:22,255 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:29:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:22,385 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2022-11-21 17:29:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:29:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 59 [2022-11-21 17:29:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:22,390 INFO L225 Difference]: With dead ends: 137 [2022-11-21 17:29:22,390 INFO L226 Difference]: Without dead ends: 137 [2022-11-21 17:29:22,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 17:29:22,391 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 331 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:22,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 88 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-21 17:29:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2022-11-21 17:29:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 130 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 17:29:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2022-11-21 17:29:22,402 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 59 [2022-11-21 17:29:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:22,404 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2022-11-21 17:29:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:29:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2022-11-21 17:29:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:29:22,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:22,406 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:29:22,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1929263777, now seen corresponding path program 1 times [2022-11-21 17:29:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:22,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911795432] [2022-11-21 17:29:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 17:29:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911795432] [2022-11-21 17:29:23,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911795432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043570371] [2022-11-21 17:29:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:23,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:23,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:23,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:29:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:23,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 17:29:23,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:23,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 17:29:23,720 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:23,721 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 17:29:23,752 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 17:29:23,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,786 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 17:29:23,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-21 17:29:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-21 17:29:23,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:23,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-21 17:29:23,931 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 23 treesize of output 23 [2022-11-21 17:29:24,076 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:24,077 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-21 17:29:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:24,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:24,157 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1269 (Array Int Int)) (v_ArrVal_1267 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1267)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1269) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false [2022-11-21 17:29:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2022-11-21 17:29:24,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043570371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:24,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:24,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 23 [2022-11-21 17:29:24,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406914099] [2022-11-21 17:29:24,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:24,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:29:24,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:24,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:29:24,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=390, Unknown=10, NotChecked=40, Total=506 [2022-11-21 17:29:24,243 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 17:29:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:25,092 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2022-11-21 17:29:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:29:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 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 63 [2022-11-21 17:29:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:25,094 INFO L225 Difference]: With dead ends: 162 [2022-11-21 17:29:25,094 INFO L226 Difference]: Without dead ends: 162 [2022-11-21 17:29:25,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=1029, Unknown=11, NotChecked=70, Total=1406 [2022-11-21 17:29:25,096 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 761 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:25,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 438 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 502 Invalid, 0 Unknown, 153 Unchecked, 0.4s Time] [2022-11-21 17:29:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-21 17:29:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2022-11-21 17:29:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 130 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 17:29:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2022-11-21 17:29:25,099 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 63 [2022-11-21 17:29:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:25,100 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2022-11-21 17:29:25,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 17:29:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2022-11-21 17:29:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:29:25,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:25,101 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:25,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:25,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 17:29:25,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:25,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:25,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1264795644, now seen corresponding path program 1 times [2022-11-21 17:29:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:25,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031625323] [2022-11-21 17:29:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:25,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 17:29:26,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:26,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031625323] [2022-11-21 17:29:26,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031625323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:26,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668553108] [2022-11-21 17:29:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:26,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:26,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:26,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:29:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-21 17:29:26,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:26,918 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 17:29:26,942 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:26,943 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 17:29:26,960 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 17:29:26,973 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 23 treesize of output 22 [2022-11-21 17:29:26,987 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 23 treesize of output 22 [2022-11-21 17:29:27,011 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 23 treesize of output 22 [2022-11-21 17:29:27,051 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 16 treesize of output 18 [2022-11-21 17:29:27,106 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 17:29:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:27,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:27,249 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1648 (Array Int Int)) (v_ArrVal_1647 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1647)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1648) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0)) is different from false [2022-11-21 17:29:27,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:27,380 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 3 case distinctions, treesize of input 32 treesize of output 43 [2022-11-21 17:29:27,385 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 36 treesize of output 24 [2022-11-21 17:29:27,390 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 7 treesize of output 3 [2022-11-21 17:29:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2022-11-21 17:29:27,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668553108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:27,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:27,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 24 [2022-11-21 17:29:27,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941332360] [2022-11-21 17:29:27,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:27,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:29:27,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:27,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:29:27,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=431, Unknown=13, NotChecked=42, Total=552 [2022-11-21 17:29:27,461 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 17:29:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:28,150 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2022-11-21 17:29:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:29:28,151 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 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 65 [2022-11-21 17:29:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:28,152 INFO L225 Difference]: With dead ends: 162 [2022-11-21 17:29:28,152 INFO L226 Difference]: Without dead ends: 162 [2022-11-21 17:29:28,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=284, Invalid=967, Unknown=13, NotChecked=68, Total=1332 [2022-11-21 17:29:28,153 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 834 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 384 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 417 Invalid, 0 Unknown, 139 Unchecked, 0.3s Time] [2022-11-21 17:29:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-21 17:29:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2022-11-21 17:29:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.25) internal successors, (145), 130 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 17:29:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2022-11-21 17:29:28,157 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 65 [2022-11-21 17:29:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:28,157 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2022-11-21 17:29:28,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 17:29:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2022-11-21 17:29:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 17:29:28,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:28,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:28,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 17:29:28,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash -892543400, now seen corresponding path program 1 times [2022-11-21 17:29:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:28,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521689428] [2022-11-21 17:29:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 17:29:29,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:29,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521689428] [2022-11-21 17:29:29,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521689428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:29,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302662902] [2022-11-21 17:29:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:29,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:29,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:29:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:29,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-21 17:29:29,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:29,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-21 17:29:29,579 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:29,579 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 17:29:29,628 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 17:29:29,661 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 23 treesize of output 22 [2022-11-21 17:29:29,694 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:29:29,695 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 17:29:29,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:29,812 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 26 treesize of output 20 [2022-11-21 17:29:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:29,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:30,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:30,426 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 26 treesize of output 32 [2022-11-21 17:29:30,434 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:30,435 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 35 treesize of output 33 [2022-11-21 17:29:30,439 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 20 treesize of output 18 [2022-11-21 17:29:30,460 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:29:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:30,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302662902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:30,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:30,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 32 [2022-11-21 17:29:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176390767] [2022-11-21 17:29:30,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:30,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:29:30,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:29:30,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=902, Unknown=3, NotChecked=0, Total=992 [2022-11-21 17:29:30,695 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 17:29:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:31,952 INFO L93 Difference]: Finished difference Result 149 states and 158 transitions. [2022-11-21 17:29:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:29:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 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 66 [2022-11-21 17:29:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:31,956 INFO L225 Difference]: With dead ends: 149 [2022-11-21 17:29:31,957 INFO L226 Difference]: Without dead ends: 145 [2022-11-21 17:29:31,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=402, Invalid=1947, Unknown=3, NotChecked=0, Total=2352 [2022-11-21 17:29:31,958 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1355 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:31,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 472 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:29:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-21 17:29:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 117. [2022-11-21 17:29:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 17:29:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2022-11-21 17:29:31,961 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 66 [2022-11-21 17:29:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:31,962 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2022-11-21 17:29:31,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 17:29:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2022-11-21 17:29:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-21 17:29:31,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:31,967 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:31,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:32,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:32,173 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 8707913, now seen corresponding path program 1 times [2022-11-21 17:29:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:32,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170623110] [2022-11-21 17:29:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 17:29:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170623110] [2022-11-21 17:29:33,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170623110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691091013] [2022-11-21 17:29:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:33,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:33,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:33,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:29:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:33,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-21 17:29:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:33,619 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 17:29:33,644 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:33,644 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 17:29:33,665 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 17:29:33,705 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 23 treesize of output 22 [2022-11-21 17:29:33,717 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 23 treesize of output 22 [2022-11-21 17:29:33,734 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 16 treesize of output 18 [2022-11-21 17:29:33,791 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 17:29:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:33,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:34,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:34,056 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 27 treesize of output 33 [2022-11-21 17:29:34,064 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 36 treesize of output 24 [2022-11-21 17:29:34,069 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 7 treesize of output 3 [2022-11-21 17:29:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:34,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691091013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:34,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:34,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 14] total 23 [2022-11-21 17:29:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288457467] [2022-11-21 17:29:34,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:34,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:29:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:29:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=439, Unknown=2, NotChecked=0, Total=506 [2022-11-21 17:29:34,183 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 17:29:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:34,797 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2022-11-21 17:29:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:29:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 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 67 [2022-11-21 17:29:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:34,798 INFO L225 Difference]: With dead ends: 143 [2022-11-21 17:29:34,798 INFO L226 Difference]: Without dead ends: 143 [2022-11-21 17:29:34,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=881, Unknown=2, NotChecked=0, Total=1122 [2022-11-21 17:29:34,800 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 779 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:34,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 364 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:29:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-21 17:29:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 117. [2022-11-21 17:29:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 116 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 17:29:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2022-11-21 17:29:34,803 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 67 [2022-11-21 17:29:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:34,803 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2022-11-21 17:29:34,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 17:29:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2022-11-21 17:29:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 17:29:34,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:34,804 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:34,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:35,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:29:35,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash -221625277, now seen corresponding path program 1 times [2022-11-21 17:29:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:35,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723489155] [2022-11-21 17:29:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:35,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 17:29:36,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:36,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723489155] [2022-11-21 17:29:36,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723489155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:36,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627473304] [2022-11-21 17:29:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:36,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:36,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:36,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:36,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:29:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:36,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-21 17:29:36,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:36,379 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 17:29:36,408 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:36,408 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 17:29:36,433 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 17:29:36,441 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 23 treesize of output 22 [2022-11-21 17:29:36,468 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:29:36,468 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 34 treesize of output 35 [2022-11-21 17:29:36,651 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 25 treesize of output 13 [2022-11-21 17:29:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:36,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:36,769 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-11-21 17:29:36,769 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 21 treesize of output 20 [2022-11-21 17:29:36,774 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2779 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2779) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2022-11-21 17:29:36,783 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2779 (Array Int Int)) (v_ArrVal_2776 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_2776)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2779) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2022-11-21 17:29:36,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:36,792 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 2 case distinctions, treesize of input 27 treesize of output 33 [2022-11-21 17:29:36,795 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 36 treesize of output 24 [2022-11-21 17:29:36,800 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 7 treesize of output 3 [2022-11-21 17:29:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 3 not checked. [2022-11-21 17:29:36,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627473304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:36,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:36,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 25 [2022-11-21 17:29:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502432459] [2022-11-21 17:29:36,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:36,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:29:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:29:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=488, Unknown=2, NotChecked=90, Total=650 [2022-11-21 17:29:36,876 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 26 states, 25 states have (on average 4.6) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:29:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:37,710 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2022-11-21 17:29:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:29:37,710 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.6) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 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 69 [2022-11-21 17:29:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:37,711 INFO L225 Difference]: With dead ends: 145 [2022-11-21 17:29:37,711 INFO L226 Difference]: Without dead ends: 145 [2022-11-21 17:29:37,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=1052, Unknown=2, NotChecked=142, Total=1482 [2022-11-21 17:29:37,713 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 864 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:37,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 276 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 527 Invalid, 0 Unknown, 177 Unchecked, 0.4s Time] [2022-11-21 17:29:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-21 17:29:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2022-11-21 17:29:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 118 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 17:29:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2022-11-21 17:29:37,716 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 69 [2022-11-21 17:29:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2022-11-21 17:29:37,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.6) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 17:29:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2022-11-21 17:29:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 17:29:37,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:37,718 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:37,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:37,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:29:37,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash -221625276, now seen corresponding path program 1 times [2022-11-21 17:29:37,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:37,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899070085] [2022-11-21 17:29:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:29:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:39,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899070085] [2022-11-21 17:29:39,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899070085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981793106] [2022-11-21 17:29:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:39,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:39,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:29:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-21 17:29:39,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:39,858 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 17:29:39,936 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:29:39,937 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 17:29:39,997 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 17:29:40,009 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 17:29:40,051 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 23 treesize of output 22 [2022-11-21 17:29:40,061 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 23 treesize of output 22 [2022-11-21 17:29:40,103 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:29:40,104 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 54 treesize of output 53 [2022-11-21 17:29:40,110 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 41 treesize of output 41 [2022-11-21 17:29:40,405 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 31 treesize of output 19 [2022-11-21 17:29:40,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 26 treesize of output 14 [2022-11-21 17:29:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 17:29:40,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:40,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:40,770 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 49 treesize of output 53 [2022-11-21 17:29:40,942 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_prenex_1 (Array Int Int)) (v_ArrVal_3154 Int)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_3154)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) 4))) (forall ((v_ArrVal_3158 (Array Int Int)) (v_ArrVal_3154 Int)) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_3154)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3158) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 9))) (forall ((v_ArrVal_3159 (Array Int Int)) (v_ArrVal_3156 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_3156)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3159) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) is different from false [2022-11-21 17:29:40,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:40,965 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 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-21 17:29:40,968 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 40 treesize of output 28 [2022-11-21 17:29:40,972 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 5 [2022-11-21 17:29:40,982 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-21 17:29:40,982 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 29 treesize of output 1 [2022-11-21 17:29:40,988 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-21 17:29:40,988 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 27 treesize of output 1 [2022-11-21 17:29:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2022-11-21 17:29:41,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981793106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:41,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:41,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 35 [2022-11-21 17:29:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296481466] [2022-11-21 17:29:41,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 17:29:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 17:29:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1067, Unknown=17, NotChecked=66, Total=1260 [2022-11-21 17:29:41,216 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 36 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 36 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 17:29:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:43,643 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2022-11-21 17:29:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:29:43,643 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 36 states have internal predecessors, (136), 0 states have call successors, (0), 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 69 [2022-11-21 17:29:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:43,644 INFO L225 Difference]: With dead ends: 178 [2022-11-21 17:29:43,644 INFO L226 Difference]: Without dead ends: 178 [2022-11-21 17:29:43,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=509, Invalid=2130, Unknown=17, NotChecked=100, Total=2756 [2022-11-21 17:29:43,646 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1268 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:43,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 405 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 802 Invalid, 0 Unknown, 103 Unchecked, 0.7s Time] [2022-11-21 17:29:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-21 17:29:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 141. [2022-11-21 17:29:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.236220472440945) internal successors, (157), 140 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 17:29:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2022-11-21 17:29:43,653 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 69 [2022-11-21 17:29:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:43,653 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2022-11-21 17:29:43,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 36 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 17:29:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2022-11-21 17:29:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 17:29:43,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:43,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 17:29:43,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:43,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:29:43,861 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1069989460, now seen corresponding path program 1 times [2022-11-21 17:29:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:43,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079188058] [2022-11-21 17:29:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-21 17:29:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:44,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079188058] [2022-11-21 17:29:44,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079188058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:44,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797383251] [2022-11-21 17:29:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:44,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:44,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:44,142 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:44,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:29:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:44,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:29:44,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:44,636 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 31 treesize of output 19 [2022-11-21 17:29:44,639 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 25 treesize of output 13 [2022-11-21 17:29:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-21 17:29:44,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-21 17:29:44,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797383251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:44,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:44,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 10 [2022-11-21 17:29:44,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634651923] [2022-11-21 17:29:44,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:44,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:29:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:29:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:29:44,775 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 17:29:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:44,933 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-11-21 17:29:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:29:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 73 [2022-11-21 17:29:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:44,934 INFO L225 Difference]: With dead ends: 144 [2022-11-21 17:29:44,935 INFO L226 Difference]: Without dead ends: 144 [2022-11-21 17:29:44,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:29:44,936 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 177 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:44,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 107 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-21 17:29:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-11-21 17:29:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.220472440944882) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 17:29:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2022-11-21 17:29:44,939 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 73 [2022-11-21 17:29:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:44,940 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2022-11-21 17:29:44,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 17:29:44,940 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2022-11-21 17:29:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:29:44,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:44,941 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:44,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-21 17:29:45,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:29:45,147 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:29:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash -215880728, now seen corresponding path program 1 times [2022-11-21 17:29:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:45,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124490110] [2022-11-21 17:29:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:29:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:47,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124490110] [2022-11-21 17:29:47,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124490110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:47,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680502287] [2022-11-21 17:29:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:47,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:47,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:47,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:29:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:47,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-21 17:29:47,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:47,661 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 17:29:47,691 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 17:29:47,692 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 17:29:47,742 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 17:29:47,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:47,794 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 17:29:47,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:47,813 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 17:29:47,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:47,829 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 17:29:47,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:47,844 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 17:29:47,865 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 17:29:47,977 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 17:29:47,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 17:29:48,000 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 17:29:48,013 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 17:29:48,026 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 17:29:48,041 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 17:29:48,047 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 17:29:48,055 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 17:29:48,125 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 17:29:48,131 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 23 treesize of output 22 [2022-11-21 17:29:48,141 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 23 treesize of output 22 [2022-11-21 17:29:48,183 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:29:48,183 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 79 treesize of output 74 [2022-11-21 17:29:48,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:29:48,192 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 45 treesize of output 38 [2022-11-21 17:29:48,198 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 17:29:48,481 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 15 [2022-11-21 17:29:48,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 17:29:48,555 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 17:29:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:29:48,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:50,899 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3922 Int) (v_ArrVal_3921 Int) (v_ArrVal_3920 (Array Int Int)) (v_ArrVal_3929 Int) (v_ArrVal_3925 (Array Int Int))) (= (let ((.cse1 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_3920))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_3929))) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_3922)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3927) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_3921)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3925) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2))) 0)) is different from false [2022-11-21 17:29:50,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:50,917 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 2 case distinctions, treesize of input 71 treesize of output 77 [2022-11-21 17:29:50,922 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 124 treesize of output 112 [2022-11-21 17:29:50,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2022-11-21 17:29:50,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:50,939 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 2 case distinctions, treesize of input 96 treesize of output 86 [2022-11-21 17:29:50,943 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 136 treesize of output 118 [2022-11-21 17:29:50,947 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 109 treesize of output 101 [2022-11-21 17:29:55,821 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_43| Int) (v_ArrVal_3920 (Array Int Int)) (v_ArrVal_3909 Int) (v_ArrVal_3911 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_43|) 0)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_3909)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3911) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_43| v_ArrVal_3920) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0))) is different from false [2022-11-21 17:29:56,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:29:56,085 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 3 case distinctions, treesize of input 31 treesize of output 42 [2022-11-21 17:29:56,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-11-21 17:29:56,096 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 24 treesize of output 22 [2022-11-21 17:29:56,099 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 38 treesize of output 34 [2022-11-21 17:29:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 72 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 3 not checked. [2022-11-21 17:29:56,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680502287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:56,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:56,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 47 [2022-11-21 17:29:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711252487] [2022-11-21 17:29:56,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:56,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-21 17:29:56,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-21 17:29:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1783, Unknown=17, NotChecked=174, Total=2162 [2022-11-21 17:29:56,364 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 47 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 17:30:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:00,104 INFO L93 Difference]: Finished difference Result 172 states and 186 transitions. [2022-11-21 17:30:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:30:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 47 states have internal predecessors, (161), 0 states have call successors, (0), 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 77 [2022-11-21 17:30:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:00,105 INFO L225 Difference]: With dead ends: 172 [2022-11-21 17:30:00,106 INFO L226 Difference]: Without dead ends: 172 [2022-11-21 17:30:00,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=709, Invalid=3442, Unknown=17, NotChecked=254, Total=4422 [2022-11-21 17:30:00,107 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1107 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 44 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:00,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 708 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 887 Invalid, 3 Unknown, 242 Unchecked, 1.4s Time] [2022-11-21 17:30:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-21 17:30:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 141. [2022-11-21 17:30:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 140 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 17:30:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2022-11-21 17:30:00,111 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 77 [2022-11-21 17:30:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:00,111 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2022-11-21 17:30:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 47 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 17:30:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2022-11-21 17:30:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 17:30:00,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:00,113 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:00,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-21 17:30:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 17:30:00,323 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:30:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash 323840077, now seen corresponding path program 1 times [2022-11-21 17:30:00,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836216259] [2022-11-21 17:30:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 65 proven. 41 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:30:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836216259] [2022-11-21 17:30:02,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836216259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:30:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917374466] [2022-11-21 17:30:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:02,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:30:02,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:30:02,725 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:30:02,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:30:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:03,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-21 17:30:03,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:30:03,125 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 17:30:03,164 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 17:30:03,164 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 17:30:03,228 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 17:30:03,280 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 23 treesize of output 22 [2022-11-21 17:30:03,299 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 23 treesize of output 22 [2022-11-21 17:30:03,318 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 23 treesize of output 22 [2022-11-21 17:30:03,345 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 16 treesize of output 18 [2022-11-21 17:30:03,472 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 17:30:03,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 17:30:03,501 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 17:30:03,513 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 17:30:03,530 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 17:30:03,544 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 17:30:03,549 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 17:30:03,556 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 17:30:03,622 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 23 treesize of output 22 [2022-11-21 17:30:03,629 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 17:30:03,639 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 23 treesize of output 22 [2022-11-21 17:30:03,685 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:30:03,686 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 79 treesize of output 74 [2022-11-21 17:30:03,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:03,694 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 45 treesize of output 38 [2022-11-21 17:30:03,698 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 17:30:04,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:04,071 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 29 treesize of output 15 [2022-11-21 17:30:04,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:04,084 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 17 treesize of output 7 [2022-11-21 17:30:04,148 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 17:30:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:30:04,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:30:04,875 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~1#1.offset_44| Int) (v_ArrVal_4323 (Array Int Int)) (v_ArrVal_4325 Int) (v_ArrVal_4326 (Array Int Int)) (v_ArrVal_4321 Int) (v_ArrVal_4327 (Array Int Int)) (v_ArrVal_4322 Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_44|) (not (<= 0 |v_ULTIMATE.start_main_~head~1#1.offset_44|)) (= (let ((.cse1 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |v_ULTIMATE.start_main_~head~1#1.offset_44| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_4323))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_4325))) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_4322)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_4326) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_4321)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_4327) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) 8))) 0))) is different from false [2022-11-21 17:30:04,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:04,894 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 73 treesize of output 79 [2022-11-21 17:30:04,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:04,909 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 128 treesize of output 124 [2022-11-21 17:30:04,917 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 57 treesize of output 53 [2022-11-21 17:30:04,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:04,938 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 108 treesize of output 98 [2022-11-21 17:30:04,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:04,954 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 160 treesize of output 150 [2022-11-21 17:30:04,963 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 138 treesize of output 130 [2022-11-21 17:30:41,812 WARN L233 SmtUtils]: Spent 35.38s on a formula simplification. DAG size of input: 94 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:30:42,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:42,083 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 17 treesize of output 21 [2022-11-21 17:30:43,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:43,541 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 4 case distinctions, treesize of input 248 treesize of output 138 [2022-11-21 17:30:43,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:43,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:43,600 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 953 treesize of output 927 [2022-11-21 17:30:43,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:43,661 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 689 treesize of output 609 [2022-11-21 17:30:43,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:43,693 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 579 treesize of output 555 [2022-11-21 17:30:43,729 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 8 treesize of output 4 [2022-11-21 17:30:44,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:44,012 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 128 [2022-11-21 17:30:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 2 not checked. [2022-11-21 17:30:44,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917374466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:30:44,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:30:44,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 24] total 52 [2022-11-21 17:30:44,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5839400] [2022-11-21 17:30:44,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:30:44,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-21 17:30:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:44,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-21 17:30:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2315, Unknown=27, NotChecked=98, Total=2652 [2022-11-21 17:30:44,436 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 52 states, 52 states have (on average 3.269230769230769) internal successors, (170), 52 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 17:30:49,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 17:30:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:53,201 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2022-11-21 17:30:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 17:30:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.269230769230769) internal successors, (170), 52 states have internal predecessors, (170), 0 states have call successors, (0), 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 79 [2022-11-21 17:30:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:53,203 INFO L225 Difference]: With dead ends: 172 [2022-11-21 17:30:53,203 INFO L226 Difference]: Without dead ends: 172 [2022-11-21 17:30:53,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=870, Invalid=4508, Unknown=28, NotChecked=144, Total=5550 [2022-11-21 17:30:53,206 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1157 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 63 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:53,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 876 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1181 Invalid, 36 Unknown, 116 Unchecked, 3.1s Time] [2022-11-21 17:30:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-21 17:30:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 141. [2022-11-21 17:30:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.204724409448819) internal successors, (153), 140 states have internal predecessors, (153), 0 states have call successors, (0), 0 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 17:30:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2022-11-21 17:30:53,213 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 79 [2022-11-21 17:30:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:53,213 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2022-11-21 17:30:53,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.269230769230769) internal successors, (170), 52 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 17:30:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2022-11-21 17:30:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 17:30:53,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:53,214 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-11-21 17:30:53,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-21 17:30:53,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:30:53,430 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:30:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1110523695, now seen corresponding path program 1 times [2022-11-21 17:30:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:53,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156260239] [2022-11-21 17:30:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:30:55,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:55,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156260239] [2022-11-21 17:30:55,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156260239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:30:55,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523482406] [2022-11-21 17:30:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:30:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:30:55,527 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:30:55,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 17:30:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:55,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-21 17:30:55,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:30:56,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-21 17:30:56,117 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 17:30:56,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 17:30:56,222 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 17:30:56,312 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 23 treesize of output 22 [2022-11-21 17:30:56,355 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:30:56,356 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 44 treesize of output 43 [2022-11-21 17:30:56,494 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-21 17:30:56,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 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 17:30:56,574 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 31 treesize of output 29 [2022-11-21 17:30:56,597 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 31 treesize of output 29 [2022-11-21 17:30:56,617 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 31 treesize of output 29 [2022-11-21 17:30:56,638 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 17:30:56,646 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 38 treesize of output 29 [2022-11-21 17:30:56,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:56,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:56,749 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 17:30:56,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2022-11-21 17:30:56,765 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 23 treesize of output 22 [2022-11-21 17:30:56,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:56,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:56,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:56,808 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 17:30:56,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 53 [2022-11-21 17:30:56,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:56,818 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 43 treesize of output 43 [2022-11-21 17:30:57,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:57,374 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 34 treesize of output 20 [2022-11-21 17:30:57,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:30:57,592 INFO L321 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2022-11-21 17:30:57,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 35 [2022-11-21 17:30:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:30:57,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:30:58,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:58,500 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 120 treesize of output 126 [2022-11-21 17:30:58,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:58,515 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 223 treesize of output 219 [2022-11-21 17:30:58,530 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 206 treesize of output 202 [2022-11-21 17:31:02,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:02,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 88 treesize of output 65 [2022-11-21 17:31:02,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:02,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 88 treesize of output 65 [2022-11-21 17:31:02,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:02,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 88 treesize of output 65 [2022-11-21 17:31:02,889 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12))) (and (forall ((|v_ULTIMATE.start_main_~head~1#1.offset_47| Int) (v_arrayElimArr_18 (Array Int Int))) (or (not (<= 0 |v_ULTIMATE.start_main_~head~1#1.offset_47|)) (not (= (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_18))) (store .cse1 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_main_~head~1#1.offset_47| 4)))) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) 0)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_47|) (not (= (select v_arrayElimArr_18 .cse3) |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) (forall ((v_arrayElimArr_17 (Array Int Int)) (|v_ULTIMATE.start_main_~head~1#1.offset_47| Int) (v_arrayElimCell_156 Int)) (or (not (<= 0 |v_ULTIMATE.start_main_~head~1#1.offset_47|)) (not (= 0 (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_17))) (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_main_~head~1#1.offset_47| 4)))) (+ v_arrayElimCell_156 4)))) (= |v_ULTIMATE.start_main_~head~1#1.offset_47| |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_47|) (not (= (select v_arrayElimArr_17 .cse3) |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) (or (forall ((v_arrayElimArr_16 (Array Int Int)) (|v_ULTIMATE.start_main_~head~1#1.offset_47| Int) (v_arrayElimCell_157 Int)) (or (not (= (select v_arrayElimArr_16 .cse3) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (<= 0 |v_ULTIMATE.start_main_~head~1#1.offset_47|)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_47|) (not (= (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_16))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (select .cse6 (select (select .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_main_~head~1#1.offset_47| 4)))) (+ v_arrayElimCell_157 4)) 0)))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|))))) is different from false [2022-11-21 17:31:03,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:03,174 INFO L321 Elim1Store]: treesize reduction 35, result has 53.3 percent of original size [2022-11-21 17:31:03,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 93 [2022-11-21 17:31:03,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:03,279 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:03,280 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 60 [2022-11-21 17:31:04,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:04,762 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 2 case distinctions, treesize of input 120 treesize of output 81 [2022-11-21 17:31:04,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:31:04,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:04,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:04,778 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 1285 treesize of output 1175 [2022-11-21 17:31:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:04,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:04,807 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 1173 treesize of output 763 [2022-11-21 17:31:04,821 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 246 treesize of output 214 [2022-11-21 17:31:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 8 not checked. [2022-11-21 17:31:05,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523482406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:05,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:31:05,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 55 [2022-11-21 17:31:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253865921] [2022-11-21 17:31:05,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-21 17:31:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-21 17:31:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2673, Unknown=21, NotChecked=104, Total=2970 [2022-11-21 17:31:05,464 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 55 states, 55 states have (on average 3.309090909090909) internal successors, (182), 55 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 17:31:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:21,251 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2022-11-21 17:31:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 17:31:21,251 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.309090909090909) internal successors, (182), 55 states have internal predecessors, (182), 0 states have call successors, (0), 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 80 [2022-11-21 17:31:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:21,253 INFO L225 Difference]: With dead ends: 155 [2022-11-21 17:31:21,253 INFO L226 Difference]: Without dead ends: 155 [2022-11-21 17:31:21,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=885, Invalid=5418, Unknown=21, NotChecked=156, Total=6480 [2022-11-21 17:31:21,255 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1901 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:21,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 1092 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1594 Invalid, 0 Unknown, 134 Unchecked, 2.1s Time] [2022-11-21 17:31:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-21 17:31:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2022-11-21 17:31:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 126 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 17:31:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2022-11-21 17:31:21,260 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 80 [2022-11-21 17:31:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:21,260 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2022-11-21 17:31:21,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.309090909090909) internal successors, (182), 55 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 17:31:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2022-11-21 17:31:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-21 17:31:21,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:21,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:21,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:31:21,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:31:21,470 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:31:21,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1974245714, now seen corresponding path program 1 times [2022-11-21 17:31:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:21,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095719166] [2022-11-21 17:31:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:21,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:31:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:23,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095719166] [2022-11-21 17:31:23,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095719166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:31:23,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22503946] [2022-11-21 17:31:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:23,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:31:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:31:23,734 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:31:23,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 17:31:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:24,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-21 17:31:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:24,285 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 17:31:24,317 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 17:31:24,343 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 17:31:24,344 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 17:31:24,461 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 17:31:24,539 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 23 treesize of output 22 [2022-11-21 17:31:24,565 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 23 treesize of output 22 [2022-11-21 17:31:24,607 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 16 treesize of output 18 [2022-11-21 17:31:24,783 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 17:31:24,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 17:31:24,795 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 17:31:24,874 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 17:31:24,895 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 17:31:24,915 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 17:31:24,935 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 17:31:24,945 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 17:31:25,022 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 23 treesize of output 22 [2022-11-21 17:31:25,031 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 17:31:25,082 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:31:25,083 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 72 treesize of output 67 [2022-11-21 17:31:25,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:25,091 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 39 treesize of output 32 [2022-11-21 17:31:25,480 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 36 treesize of output 20 [2022-11-21 17:31:25,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-11-21 17:31:25,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:31:25,710 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 17:31:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 70 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:31:25,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:26,181 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 52 treesize of output 34 [2022-11-21 17:31:26,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:26,843 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 82 treesize of output 72 [2022-11-21 17:31:26,849 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 116 treesize of output 98 [2022-11-21 17:31:26,856 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 64 treesize of output 56 [2022-11-21 17:31:29,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:29,595 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 17 treesize of output 21 [2022-11-21 17:31:40,505 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_52| Int) (v_ArrVal_5095 Int) (v_ArrVal_5094 Int) (|v_ULTIMATE.start_dll_create_~head~0#1.offset_40| Int) (v_ArrVal_5109 Int) (v_arrayElimCell_188 Int) (v_ArrVal_5108 (Array Int Int)) (v_ArrVal_5097 (Array Int Int)) (v_ArrVal_5099 Int) (v_arrayElimCell_190 Int)) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4) v_ArrVal_5094) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_5095)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_5097) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_52| v_ArrVal_5108))) (let ((.cse1 (store (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_create_~head~0#1.offset_40| 12) v_ArrVal_5109)) (.cse2 (+ 16 v_arrayElimCell_188))) (or (not (<= 0 v_arrayElimCell_188)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_52|) 0)) (= (select (select (store .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse1) v_arrayElimCell_190) .cse2) 0) (not (<= |v_ULTIMATE.start_dll_create_~head~0#1.offset_40| |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (<= (+ v_arrayElimCell_188 20) (select (store |c_#length| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_52| v_ArrVal_5099) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (= (select .cse1 .cse2) 0))))) is different from false [2022-11-21 17:31:40,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:40,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 82 [2022-11-21 17:31:40,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:40,557 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 5289 treesize of output 5163 [2022-11-21 17:31:40,599 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 5963 treesize of output 5435 [2022-11-21 17:31:40,667 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 5843 treesize of output 5579 [2022-11-21 17:31:42,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:42,612 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 104 treesize of output 96 [2022-11-21 17:31:52,901 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 34 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:32:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 31 refuted. 1 times theorem prover too weak. 11 trivial. 2 not checked. [2022-11-21 17:32:00,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22503946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:00,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:32:00,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 24] total 55 [2022-11-21 17:32:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004793992] [2022-11-21 17:32:00,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:00,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-21 17:32:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-21 17:32:00,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2648, Unknown=16, NotChecked=104, Total=2970 [2022-11-21 17:32:00,314 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand has 55 states, 55 states have (on average 3.4) internal successors, (187), 55 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 17:32:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:06,658 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2022-11-21 17:32:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 17:32:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.4) internal successors, (187), 55 states have internal predecessors, (187), 0 states have call successors, (0), 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 81 [2022-11-21 17:32:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:06,659 INFO L225 Difference]: With dead ends: 153 [2022-11-21 17:32:06,660 INFO L226 Difference]: Without dead ends: 153 [2022-11-21 17:32:06,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=922, Invalid=5386, Unknown=16, NotChecked=156, Total=6480 [2022-11-21 17:32:06,662 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1618 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:06,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 1028 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1907 Invalid, 0 Unknown, 135 Unchecked, 2.2s Time] [2022-11-21 17:32:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-21 17:32:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2022-11-21 17:32:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 115 states have (on average 1.191304347826087) internal successors, (137), 128 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 17:32:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2022-11-21 17:32:06,666 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 81 [2022-11-21 17:32:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:06,667 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2022-11-21 17:32:06,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.4) internal successors, (187), 55 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 17:32:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2022-11-21 17:32:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 17:32:06,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:06,668 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:06,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:32:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:32:06,884 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 17:32:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1125408756, now seen corresponding path program 2 times [2022-11-21 17:32:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:06,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774963728] [2022-11-21 17:32:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:06,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 64 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:32:08,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:08,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774963728] [2022-11-21 17:32:08,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774963728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748148855] [2022-11-21 17:32:08,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:32:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:32:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:32:08,966 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:32:08,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95f73f2-ca93-4190-b6aa-846da5463f9f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 17:32:09,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:32:09,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:09,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-21 17:32:09,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:09,424 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 17:32:09,448 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 17:32:09,466 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 17:32:09,466 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 17:32:09,569 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 17:32:09,639 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 23 treesize of output 22 [2022-11-21 17:32:09,678 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 17:32:09,678 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 34 treesize of output 35 [2022-11-21 17:32:09,811 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-21 17:32:09,811 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 26 treesize of output 41 [2022-11-21 17:32:09,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-21 17:32:09,924 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 32 treesize of output 30 [2022-11-21 17:32:09,952 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 32 treesize of output 30 [2022-11-21 17:32:09,978 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 32 treesize of output 30 [2022-11-21 17:32:10,014 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 39 treesize of output 30 [2022-11-21 17:32:10,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:32:10,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:32:10,116 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 17:32:10,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 42 [2022-11-21 17:32:10,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:32:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:32:10,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:32:10,167 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 17:32:10,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 52 [2022-11-21 17:32:10,617 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 7 treesize of output 3 [2022-11-21 17:32:11,021 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-21 17:32:11,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:32:11,180 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-21 17:32:11,180 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 32 [2022-11-21 17:32:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:32:11,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:11,730 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 54 treesize of output 36 [2022-11-21 17:32:23,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:32:23,044 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 2 case distinctions, treesize of input 140 treesize of output 96 [2022-11-21 17:32:24,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:32:24,137 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 190 treesize of output 120 [2022-11-21 17:32:24,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:32:24,260 INFO L321 Elim1Store]: treesize reduction 32, result has 67.0 percent of original size [2022-11-21 17:32:24,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 7348 treesize of output 6931 [2022-11-21 17:32:24,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:32:24,393 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 7461 treesize of output 6897 [2022-11-21 17:32:24,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:32:24,823 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 6261 treesize of output 6121