./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e04fb08f 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_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936 --- 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-e04fb08 [2022-11-16 12:13:24,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:24,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:24,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:24,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:24,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:24,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:24,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:24,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:24,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:24,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:24,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:24,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:24,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:24,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:24,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:24,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:24,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:24,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:24,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:24,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:24,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:24,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:24,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:24,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:24,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:24,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:24,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:24,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:24,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:24,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:24,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:24,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:24,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:24,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:24,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:24,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:24,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:24,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:24,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:24,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:24,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-11-16 12:13:24,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:24,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:24,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:24,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:24,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:24,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:24,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:24,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:24,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:24,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:24,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:24,770 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:13:24,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:24,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:24,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:24,771 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:13:24,771 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:13:24,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:24,771 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:13:24,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:24,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:24,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:24,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:24,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:24,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:24,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:24,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:24,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:13:24,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:13:24,774 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_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936 [2022-11-16 12:13:25,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:25,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:25,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:25,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:25,200 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:25,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2022-11-16 12:13:25,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/data/1084e4415/4cc7ac786f9f49999f518e5955738cda/FLAGde70a1b6f [2022-11-16 12:13:26,006 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:26,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2022-11-16 12:13:26,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/data/1084e4415/4cc7ac786f9f49999f518e5955738cda/FLAGde70a1b6f [2022-11-16 12:13:26,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/data/1084e4415/4cc7ac786f9f49999f518e5955738cda [2022-11-16 12:13:26,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:26,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:26,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:26,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:26,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:26,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1d5149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26, skipping insertion in model container [2022-11-16 12:13:26,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:26,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:26,696 WARN L229 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_ced40e5f-6a35-4a4e-87ef-213e370427dd/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i[23818,23831] [2022-11-16 12:13:26,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:26,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:13:26,784 WARN L229 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_ced40e5f-6a35-4a4e-87ef-213e370427dd/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i[23818,23831] [2022-11-16 12:13:26,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:26,824 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:13:26,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26 WrapperNode [2022-11-16 12:13:26,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:26,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:26,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:13:26,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:13:26,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,888 INFO L138 Inliner]: procedures = 125, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-11-16 12:13:26,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:26,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:13:26,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:13:26,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:13:26,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:13:26,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:13:26,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:13:26,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:13:26,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (1/1) ... [2022-11-16 12:13:26,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:26,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:13:26,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:13:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:13:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:13:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:13:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:13:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:13:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:13:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:13:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:13:27,274 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:13:27,277 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:13:27,572 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:13:27,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:13:27,581 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:13:27,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:27 BoogieIcfgContainer [2022-11-16 12:13:27,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:13:27,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:13:27,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:13:27,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:13:27,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:26" (1/3) ... [2022-11-16 12:13:27,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae4c07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:27, skipping insertion in model container [2022-11-16 12:13:27,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:26" (2/3) ... [2022-11-16 12:13:27,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae4c07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:27, skipping insertion in model container [2022-11-16 12:13:27,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:27" (3/3) ... [2022-11-16 12:13:27,596 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2022-11-16 12:13:27,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:13:27,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-16 12:13:27,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:13:27,719 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;@3d1c9172, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:13:27,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 12:13:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:13:27,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:27,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:27,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1819225437, now seen corresponding path program 1 times [2022-11-16 12:13:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:27,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730410453] [2022-11-16 12:13:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:27,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:27,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730410453] [2022-11-16 12:13:27,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730410453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:27,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:27,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:13:27,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869170078] [2022-11-16 12:13:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:13:28,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:13:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:13:28,049 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:28,073 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-16 12:13:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:13:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 12:13:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:28,087 INFO L225 Difference]: With dead ends: 41 [2022-11-16 12:13:28,087 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 12:13:28,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:13:28,098 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:28,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 12:13:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-16 12:13:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-16 12:13:28,147 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 7 [2022-11-16 12:13:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:28,148 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-16 12:13:28,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-16 12:13:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:13:28,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:28,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:28,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:13:28,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1213452566, now seen corresponding path program 1 times [2022-11-16 12:13:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:28,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109563993] [2022-11-16 12:13:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:28,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109563993] [2022-11-16 12:13:28,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109563993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:28,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:28,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:13:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295072512] [2022-11-16 12:13:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:13:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:13:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:13:28,399 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:28,493 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2022-11-16 12:13:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:13:28,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:13:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:28,498 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:13:28,500 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:13:28,500 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 [2022-11-16 12:13:28,503 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:28,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:13:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2022-11-16 12:13:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-11-16 12:13:28,519 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 9 [2022-11-16 12:13:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:28,522 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-11-16 12:13:28,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-11-16 12:13:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:13:28,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:28,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:28,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:13:28,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1213452567, now seen corresponding path program 1 times [2022-11-16 12:13:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437035830] [2022-11-16 12:13:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:28,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:28,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437035830] [2022-11-16 12:13:28,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437035830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:28,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:28,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:13:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108866506] [2022-11-16 12:13:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:28,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:13:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:13:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:13:28,714 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:28,753 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2022-11-16 12:13:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:13:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:13:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:28,755 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:13:28,755 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 12:13:28,756 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 [2022-11-16 12:13:28,757 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 30 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:28,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 12:13:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2022-11-16 12:13:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-16 12:13:28,765 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2022-11-16 12:13:28,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:28,765 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-16 12:13:28,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-16 12:13:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:13:28,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:28,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:13:28,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2104757995, now seen corresponding path program 1 times [2022-11-16 12:13:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:28,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745524722] [2022-11-16 12:13:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:28,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:28,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745524722] [2022-11-16 12:13:28,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745524722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:28,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:28,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:13:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712244156] [2022-11-16 12:13:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:28,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:13:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:13:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:28,912 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:29,002 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-11-16 12:13:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:13:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:13:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:29,004 INFO L225 Difference]: With dead ends: 74 [2022-11-16 12:13:29,004 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 12:13:29,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:29,006 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:29,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 156 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 12:13:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 41. [2022-11-16 12:13:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.46875) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-16 12:13:29,023 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 11 [2022-11-16 12:13:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:29,024 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-16 12:13:29,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-16 12:13:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:13:29,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:29,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:29,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:13:29,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash -48409076, now seen corresponding path program 1 times [2022-11-16 12:13:29,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:29,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13164013] [2022-11-16 12:13:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:13:29,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:29,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13164013] [2022-11-16 12:13:29,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13164013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:29,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:29,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475527609] [2022-11-16 12:13:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:29,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:29,201 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:29,330 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-11-16 12:13:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:13:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:13:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:29,333 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:13:29,338 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:13:29,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:29,340 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 85 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:13:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2022-11-16 12:13:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-11-16 12:13:29,354 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2022-11-16 12:13:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:29,355 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-11-16 12:13:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-16 12:13:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:29,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:29,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:29,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:13:29,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash 347063660, now seen corresponding path program 1 times [2022-11-16 12:13:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771059563] [2022-11-16 12:13:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:29,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771059563] [2022-11-16 12:13:29,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771059563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:29,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:29,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92494695] [2022-11-16 12:13:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:29,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:29,577 INFO L87 Difference]: Start difference. First operand 45 states and 52 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) [2022-11-16 12:13:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:29,795 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2022-11-16 12:13:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:13:29,796 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 [2022-11-16 12:13:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:29,803 INFO L225 Difference]: With dead ends: 89 [2022-11-16 12:13:29,804 INFO L226 Difference]: Without dead ends: 89 [2022-11-16 12:13:29,806 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 [2022-11-16 12:13:29,808 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 169 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:29,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 152 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:13:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-16 12:13:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 47. [2022-11-16 12:13:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 46 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) [2022-11-16 12:13:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-11-16 12:13:29,823 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2022-11-16 12:13:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:29,824 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-11-16 12:13:29,824 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) [2022-11-16 12:13:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-11-16 12:13:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:29,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:29,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:13:29,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 347063661, now seen corresponding path program 1 times [2022-11-16 12:13:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:29,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511321356] [2022-11-16 12:13:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511321356] [2022-11-16 12:13:29,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511321356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448835373] [2022-11-16 12:13:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:29,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:29,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:13:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:30,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:13:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:30,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:30,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448835373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:30,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:30,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-16 12:13:30,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374238645] [2022-11-16 12:13:30,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:30,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:30,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:30,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:30,156 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:30,245 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2022-11-16 12:13:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:13:30,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:13:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:30,247 INFO L225 Difference]: With dead ends: 92 [2022-11-16 12:13:30,247 INFO L226 Difference]: Without dead ends: 92 [2022-11-16 12:13:30,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:13:30,248 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 190 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 99 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-16 12:13:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 47. [2022-11-16 12:13:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.394736842105263) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-16 12:13:30,254 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2022-11-16 12:13:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:30,254 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-16 12:13:30,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-16 12:13:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:13:30,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:30,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:30,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:13:30,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1541743515, now seen corresponding path program 2 times [2022-11-16 12:13:30,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485783645] [2022-11-16 12:13:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:30,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:13:30,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:30,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485783645] [2022-11-16 12:13:30,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485783645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:30,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:30,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:30,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123255934] [2022-11-16 12:13:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:30,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:30,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:30,889 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:31,036 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2022-11-16 12:13:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:13:31,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 12:13:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:31,038 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:13:31,038 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:13:31,039 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 [2022-11-16 12:13:31,040 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 174 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:31,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 73 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:13:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2022-11-16 12:13:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.368421052631579) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-16 12:13:31,050 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 23 [2022-11-16 12:13:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:31,051 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-16 12:13:31,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-16 12:13:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:13:31,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:31,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:13:31,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:31,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash -300839492, now seen corresponding path program 1 times [2022-11-16 12:13:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:31,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523754995] [2022-11-16 12:13:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:13:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523754995] [2022-11-16 12:13:31,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523754995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:31,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:31,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879537436] [2022-11-16 12:13:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:31,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:31,201 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:31,280 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-11-16 12:13:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:13:31,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-16 12:13:31,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:31,282 INFO L225 Difference]: With dead ends: 48 [2022-11-16 12:13:31,282 INFO L226 Difference]: Without dead ends: 48 [2022-11-16 12:13:31,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:13:31,284 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 96 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:31,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:31,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-16 12:13:31,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-16 12:13:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-16 12:13:31,289 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 26 [2022-11-16 12:13:31,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:31,290 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-16 12:13:31,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-16 12:13:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:13:31,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:31,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:31,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:13:31,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash -299207194, now seen corresponding path program 1 times [2022-11-16 12:13:31,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:31,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397135103] [2022-11-16 12:13:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397135103] [2022-11-16 12:13:31,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397135103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928390935] [2022-11-16 12:13:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:31,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:31,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:31,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:13:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:31,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:13:31,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:31,934 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 [2022-11-16 12:13:32,002 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:13:32,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:13:32,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:13:32,317 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 [2022-11-16 12:13:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:32,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:32,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928390935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:32,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:32,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-11-16 12:13:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93083912] [2022-11-16 12:13:32,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:32,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:13:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:13:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:13:32,633 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:33,564 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-11-16 12:13:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-16 12:13:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:33,565 INFO L225 Difference]: With dead ends: 84 [2022-11-16 12:13:33,565 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 12:13:33,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:13:33,567 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 546 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:33,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 250 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:13:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 12:13:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 50. [2022-11-16 12:13:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 49 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) [2022-11-16 12:13:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-11-16 12:13:33,572 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 26 [2022-11-16 12:13:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:33,572 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-11-16 12:13:33,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-11-16 12:13:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:13:33,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:33,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:33,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:13:33,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:13:33,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:33,785 INFO L85 PathProgramCache]: Analyzing trace with hash -299207193, now seen corresponding path program 1 times [2022-11-16 12:13:33,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:33,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479196863] [2022-11-16 12:13:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:33,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:34,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479196863] [2022-11-16 12:13:34,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479196863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:34,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986194094] [2022-11-16 12:13:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:34,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:34,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:34,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:34,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:13:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:34,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 12:13:34,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:34,562 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 [2022-11-16 12:13:34,669 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:13:34,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:13:34,701 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:13:34,701 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 [2022-11-16 12:13:34,788 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 [2022-11-16 12:13:34,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:13:35,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:35,037 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 25 treesize of output 13 [2022-11-16 12:13:35,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:35,049 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 15 treesize of output 7 [2022-11-16 12:13:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:35,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:35,783 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 21 treesize of output 19 [2022-11-16 12:13:35,789 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 19 treesize of output 17 [2022-11-16 12:13:35,800 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 36 treesize of output 34 [2022-11-16 12:13:35,806 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 62 treesize of output 58 [2022-11-16 12:13:35,883 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 10 treesize of output 8 [2022-11-16 12:13:35,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:36,957 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 [2022-11-16 12:13:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:37,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986194094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:37,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:37,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-16 12:13:37,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415525760] [2022-11-16 12:13:37,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:37,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:13:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:13:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:13:37,117 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 30 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:38,988 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-11-16 12:13:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:13:39,007 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-16 12:13:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:39,008 INFO L225 Difference]: With dead ends: 50 [2022-11-16 12:13:39,009 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 12:13:39,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=249, Invalid=1233, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:13:39,010 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 63 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:39,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 566 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 186 Invalid, 0 Unknown, 111 Unchecked, 0.2s Time] [2022-11-16 12:13:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 12:13:39,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-16 12:13:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-11-16 12:13:39,021 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 26 [2022-11-16 12:13:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:39,022 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-11-16 12:13:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-11-16 12:13:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:13:39,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:39,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:39,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:39,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:39,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:39,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1625978896, now seen corresponding path program 1 times [2022-11-16 12:13:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:39,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779389330] [2022-11-16 12:13:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:39,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779389330] [2022-11-16 12:13:39,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779389330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:39,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833338203] [2022-11-16 12:13:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:39,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:39,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:39,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:39,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:13:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:39,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:13:39,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:39,644 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 [2022-11-16 12:13:39,773 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 16 treesize of output 8 [2022-11-16 12:13:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:39,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:13:39,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833338203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:39,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:39,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2022-11-16 12:13:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543099269] [2022-11-16 12:13:39,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:39,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:13:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:13:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:13:39,822 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:40,182 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2022-11-16 12:13:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-16 12:13:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:40,184 INFO L225 Difference]: With dead ends: 51 [2022-11-16 12:13:40,184 INFO L226 Difference]: Without dead ends: 51 [2022-11-16 12:13:40,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:13:40,184 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 247 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:40,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 186 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-16 12:13:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-11-16 12:13:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-16 12:13:40,188 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2022-11-16 12:13:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:40,188 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-16 12:13:40,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-16 12:13:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:13:40,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:40,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:40,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:40,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:40,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1624346598, now seen corresponding path program 2 times [2022-11-16 12:13:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:40,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730993919] [2022-11-16 12:13:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:40,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:41,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730993919] [2022-11-16 12:13:41,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730993919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:41,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370531371] [2022-11-16 12:13:41,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:13:41,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:41,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:41,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:41,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:13:41,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:13:41,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:13:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:41,313 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 [2022-11-16 12:13:41,356 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:13:41,356 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 [2022-11-16 12:13:41,427 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 [2022-11-16 12:13:41,553 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-16 12:13:41,554 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 [2022-11-16 12:13:41,652 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 37 treesize of output 28 [2022-11-16 12:13:41,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:13:41,944 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 [2022-11-16 12:13:42,142 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:13:42,142 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 29 [2022-11-16 12:13:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:42,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:45,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370531371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:45,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:45,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2022-11-16 12:13:45,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104402997] [2022-11-16 12:13:45,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:45,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 12:13:45,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 12:13:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1200, Unknown=1, NotChecked=0, Total=1332 [2022-11-16 12:13:45,705 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 37 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:47,326 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2022-11-16 12:13:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:13:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 37 states have internal predecessors, (65), 0 states have call successors, (0), 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 29 [2022-11-16 12:13:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:47,327 INFO L225 Difference]: With dead ends: 56 [2022-11-16 12:13:47,327 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 12:13:47,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=370, Invalid=1885, Unknown=1, NotChecked=0, Total=2256 [2022-11-16 12:13:47,329 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:47,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 485 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 381 Invalid, 0 Unknown, 84 Unchecked, 0.4s Time] [2022-11-16 12:13:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 12:13:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2022-11-16 12:13:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-11-16 12:13:47,333 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 29 [2022-11-16 12:13:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:47,334 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-11-16 12:13:47,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 37 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-11-16 12:13:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:13:47,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:47,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:47,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:47,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:13:47,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:13:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1624346597, now seen corresponding path program 2 times [2022-11-16 12:13:47,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:47,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140452265] [2022-11-16 12:13:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:48,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:48,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140452265] [2022-11-16 12:13:48,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140452265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:48,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916313408] [2022-11-16 12:13:48,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:13:48,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:48,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:48,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:48,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:13:48,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:13:48,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:48,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 12:13:48,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:48,905 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 [2022-11-16 12:13:49,076 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:13:49,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:13:49,110 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:13:49,110 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 [2022-11-16 12:13:49,244 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 [2022-11-16 12:13:49,256 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 [2022-11-16 12:13:49,448 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:13:49,448 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 1 case distinctions, treesize of input 22 treesize of output 32 [2022-11-16 12:13:49,492 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-16 12:13:49,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:13:49,612 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 34 [2022-11-16 12:13:49,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:49,631 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 46 treesize of output 37 [2022-11-16 12:13:50,410 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-16 12:13:50,411 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 93 treesize of output 51 [2022-11-16 12:13:50,427 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:13:50,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 23 [2022-11-16 12:13:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:50,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:02,732 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:14:08,060 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:14:08,087 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 158 treesize of output 152 [2022-11-16 12:14:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:10,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916313408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:10,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:10,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 44 [2022-11-16 12:14:10,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663704318] [2022-11-16 12:14:10,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:10,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:14:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:14:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1853, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 12:14:10,097 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:14,337 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-11-16 12:14:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:14:14,338 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 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 29 [2022-11-16 12:14:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:14,339 INFO L225 Difference]: With dead ends: 76 [2022-11-16 12:14:14,339 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 12:14:14,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=441, Invalid=2865, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 12:14:14,341 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 156 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:14,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 775 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 564 Invalid, 0 Unknown, 174 Unchecked, 0.7s Time] [2022-11-16 12:14:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 12:14:14,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2022-11-16 12:14:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-11-16 12:14:14,346 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 29 [2022-11-16 12:14:14,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:14,346 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-11-16 12:14:14,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-11-16 12:14:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:14:14,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:14,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:14,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:14,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:14:14,556 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:14:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash 485421372, now seen corresponding path program 2 times [2022-11-16 12:14:14,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:14,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802589723] [2022-11-16 12:14:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:14,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:14:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802589723] [2022-11-16 12:14:14,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802589723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586911738] [2022-11-16 12:14:14,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:14:14,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:14,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:14,770 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:14,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:14:14,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:14:14,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:14,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:14:14,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:14:15,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:14:15,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586911738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:15,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:15,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-11-16 12:14:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925230462] [2022-11-16 12:14:15,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:15,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:14:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:15,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:14:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:14:15,161 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:15,291 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2022-11-16 12:14:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:14:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 32 [2022-11-16 12:14:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:15,293 INFO L225 Difference]: With dead ends: 121 [2022-11-16 12:14:15,293 INFO L226 Difference]: Without dead ends: 121 [2022-11-16 12:14:15,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:14:15,294 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 102 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:15,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 259 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:14:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-16 12:14:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 82. [2022-11-16 12:14:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 81 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2022-11-16 12:14:15,307 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 32 [2022-11-16 12:14:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:15,309 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2022-11-16 12:14:15,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2022-11-16 12:14:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:14:15,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:15,310 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:15,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:15,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:14:15,527 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 12:14:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 487053670, now seen corresponding path program 3 times [2022-11-16 12:14:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858064084] [2022-11-16 12:14:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:17,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:17,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858064084] [2022-11-16 12:14:17,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858064084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:17,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655555384] [2022-11-16 12:14:17,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:14:17,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:17,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:17,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced40e5f-6a35-4a4e-87ef-213e370427dd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:14:17,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:14:17,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:17,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-16 12:14:17,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:17,290 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 [2022-11-16 12:14:17,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:14:17,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:14:17,433 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:14:17,434 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 [2022-11-16 12:14:17,550 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 19 treesize of output 18 [2022-11-16 12:14:17,559 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 22 [2022-11-16 12:14:17,794 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-16 12:14:17,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:14:17,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:14:17,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:17,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:18,012 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 12:14:18,012 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 2 case distinctions, treesize of input 66 treesize of output 47 [2022-11-16 12:14:19,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:19,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:19,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:19,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:19,772 INFO L321 Elim1Store]: treesize reduction 94, result has 10.5 percent of original size [2022-11-16 12:14:19,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 152 treesize of output 81 [2022-11-16 12:14:19,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:19,808 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-11-16 12:14:19,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 31 [2022-11-16 12:14:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:19,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:30,766 INFO L321 Elim1Store]: treesize reduction 308, result has 13.5 percent of original size [2022-11-16 12:14:30,767 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 21314 treesize of output 16284 [2022-11-16 12:14:30,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:30,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:30,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:33,092 INFO L321 Elim1Store]: treesize reduction 1214, result has 24.1 percent of original size [2022-11-16 12:14:33,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 93 case distinctions, treesize of input 565656 treesize of output 215935 [2022-11-16 12:14:43,932 WARN L233 SmtUtils]: Spent 10.84s on a formula simplification. DAG size of input: 668 DAG size of output: 664 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:14:44,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:44,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:44,831 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 5 new quantified variables, introduced 9 case distinctions, treesize of input 207016 treesize of output 188846 [2022-11-16 12:14:45,862 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-16 12:14:45,863 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 188575 treesize of output 181835 [2022-11-16 12:14:48,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2022-11-16 12:14:48,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:48,476 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 27 treesize of output 31 [2022-11-16 12:14:49,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:49,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 56 [2022-11-16 12:14:52,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:52,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:14:53,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:53,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 83 [2022-11-16 12:14:54,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:54,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:14:55,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:55,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:00,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:00,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:01,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:01,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:01,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:01,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 83 [2022-11-16 12:15:02,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:02,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 205 [2022-11-16 12:15:08,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:08,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:09,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:09,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 83 [2022-11-16 12:15:10,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:10,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:11,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:11,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:12,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:12,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 83 [2022-11-16 12:15:14,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:14,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2022-11-16 12:15:19,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:19,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:19,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 530 treesize of output 532 [2022-11-16 12:15:55,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:55,905 INFO L321 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2022-11-16 12:15:55,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 111 [2022-11-16 12:15:58,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:58,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:58,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 81 [2022-11-16 12:15:59,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:59,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:59,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 840 treesize of output 848 [2022-11-16 12:16:38,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:39,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:39,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 464 treesize of output 476 [2022-11-16 12:19:31,036 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 498 DAG size of output: 498 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)