./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:24:06,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:24:06,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:24:06,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:24:06,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:24:06,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:24:06,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:24:06,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:24:06,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:24:06,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:24:06,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:24:06,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:24:06,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:24:06,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:24:06,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:24:06,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:24:06,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:24:06,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:24:06,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:24:06,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:24:06,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:24:06,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:24:06,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:24:06,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:24:06,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:24:06,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:24:06,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:24:06,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:24:06,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:24:06,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:24:06,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:24:06,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:24:06,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:24:06,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:24:06,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:24:06,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:24:06,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:24:06,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:24:06,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:24:06,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:24:06,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:24:06,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:24:06,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:24:06,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:24:06,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:24:06,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:24:06,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:24:06,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:24:06,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:24:06,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:24:06,805 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:24:06,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:24:06,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:24:06,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:24:06,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:24:06,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:24:06,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:24:06,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:24:06,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:24:06,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:24:06,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:24:06,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:24:06,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:24:06,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:24:06,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:24:06,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:24:06,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:06,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:24:06,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:24:06,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:24:06,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:24:06,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:24:06,811 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:24:06,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:24:06,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:24:06,812 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_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2022-11-20 12:24:07,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:24:07,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:24:07,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:24:07,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:24:07,124 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:24:07,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-20 12:24:10,203 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:24:10,513 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:24:10,514 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-20 12:24:10,536 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/data/e906dbed5/5658d80cf862496aa3dd97579153fe37/FLAGc7195a5e9 [2022-11-20 12:24:10,557 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/data/e906dbed5/5658d80cf862496aa3dd97579153fe37 [2022-11-20 12:24:10,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:24:10,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:24:10,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:10,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:24:10,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:24:10,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:10" (1/1) ... [2022-11-20 12:24:10,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372ab5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:10, skipping insertion in model container [2022-11-20 12:24:10,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:10" (1/1) ... [2022-11-20 12:24:10,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:24:10,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:24:10,936 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-20 12:24:10,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:10,975 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:24:11,007 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-20 12:24:11,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:11,050 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:24:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11 WrapperNode [2022-11-20 12:24:11,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:11,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:11,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:24:11,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:24:11,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,099 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 200 [2022-11-20 12:24:11,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:11,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:24:11,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:24:11,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:24:11,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:24:11,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:24:11,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:24:11,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:24:11,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (1/1) ... [2022-11-20 12:24:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:11,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:11,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:24:11,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:24:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-20 12:24:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-20 12:24:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:24:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:24:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:24:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:24:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:24:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2022-11-20 12:24:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2022-11-20 12:24:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:24:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:24:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2022-11-20 12:24:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2022-11-20 12:24:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:24:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2022-11-20 12:24:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2022-11-20 12:24:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:24:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:24:11,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:24:11,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:24:11,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:24:11,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:24:11,918 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2022-11-20 12:24:11,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:11 BoogieIcfgContainer [2022-11-20 12:24:11,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:24:11,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:24:11,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:24:11,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:24:11,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:24:10" (1/3) ... [2022-11-20 12:24:11,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e377362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:11, skipping insertion in model container [2022-11-20 12:24:11,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:11" (2/3) ... [2022-11-20 12:24:11,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e377362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:11, skipping insertion in model container [2022-11-20 12:24:11,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:11" (3/3) ... [2022-11-20 12:24:11,935 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2022-11-20 12:24:11,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:24:11,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:24:12,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:24:12,035 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@634b03eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:24:12,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:24:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 76 states have (on average 1.6578947368421053) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 12:24:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:24:12,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:12,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:12,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1660370747, now seen corresponding path program 1 times [2022-11-20 12:24:12,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:12,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904163144] [2022-11-20 12:24:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:12,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:12,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904163144] [2022-11-20 12:24:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904163144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:12,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:12,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:12,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060219341] [2022-11-20 12:24:12,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:12,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:24:12,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:24:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:24:12,350 INFO L87 Difference]: Start difference. First operand has 96 states, 76 states have (on average 1.6578947368421053) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:12,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:12,418 INFO L93 Difference]: Finished difference Result 188 states and 326 transitions. [2022-11-20 12:24:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:24:12,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 12:24:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:12,433 INFO L225 Difference]: With dead ends: 188 [2022-11-20 12:24:12,434 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 12:24:12,442 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 [2022-11-20 12:24:12,448 INFO L413 NwaCegarLoop]: 115 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, 115 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 [2022-11-20 12:24:12,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 12:24:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-20 12:24:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 75 states have internal predecessors, (83), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:24:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-11-20 12:24:12,490 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 16 [2022-11-20 12:24:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:12,490 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-11-20 12:24:12,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-11-20 12:24:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 12:24:12,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:12,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:24:12,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1299807145, now seen corresponding path program 1 times [2022-11-20 12:24:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:12,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875557359] [2022-11-20 12:24:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:12,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:24:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:24:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:24:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:15,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875557359] [2022-11-20 12:24:15,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875557359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:15,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006194446] [2022-11-20 12:24:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:15,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:15,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:15,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:24:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:15,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-20 12:24:15,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:15,350 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 14 treesize of output 12 [2022-11-20 12:24:15,537 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:24:15,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:24:15,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:24:15,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:24:15,626 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-20 12:24:15,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-11-20 12:24:15,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-20 12:24:15,810 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 24 treesize of output 19 [2022-11-20 12:24:15,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-20 12:24:16,062 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_329 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_327) |chain_node_~node~0#1.base| v_ArrVal_328) |c_chain_node_#in~ppnode#1.base| v_ArrVal_329) |c_#memory_$Pointer$.base|) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-20 12:24:16,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:16,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:16,198 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:24:16,199 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 2 case distinctions, treesize of input 32 treesize of output 45 [2022-11-20 12:24:16,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:24:16,317 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 16 treesize of output 8 [2022-11-20 12:24:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-20 12:24:16,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:16,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006194446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:16,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:16,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2022-11-20 12:24:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374435323] [2022-11-20 12:24:16,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:16,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:24:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:24:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=479, Unknown=11, NotChecked=44, Total=600 [2022-11-20 12:24:16,597 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 24 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 12:24:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:18,096 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2022-11-20 12:24:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:24:18,097 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-11-20 12:24:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:18,100 INFO L225 Difference]: With dead ends: 150 [2022-11-20 12:24:18,100 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 12:24:18,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=918, Unknown=13, NotChecked=62, Total=1122 [2022-11-20 12:24:18,102 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 206 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:18,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 650 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1121 Invalid, 0 Unknown, 252 Unchecked, 1.0s Time] [2022-11-20 12:24:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 12:24:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 108. [2022-11-20 12:24:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 93 states have internal predecessors, (104), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:24:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2022-11-20 12:24:18,149 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 40 [2022-11-20 12:24:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:18,149 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2022-11-20 12:24:18,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 12:24:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2022-11-20 12:24:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 12:24:18,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:18,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:18,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:18,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:18,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash -727961485, now seen corresponding path program 1 times [2022-11-20 12:24:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:18,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905778187] [2022-11-20 12:24:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:18,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:24:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:24:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:24:20,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905778187] [2022-11-20 12:24:20,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905778187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239049054] [2022-11-20 12:24:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:20,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:20,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:20,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:24:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-20 12:24:20,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:20,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:24:20,606 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:24:20,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:24:20,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:24:20,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:24:20,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2022-11-20 12:24:20,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:24:20,866 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:24:20,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-20 12:24:20,933 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:24:20,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2022-11-20 12:24:21,060 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_645 (Array Int Int)) (v_ArrVal_644 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_643 (Array Int Int))) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_643) |chain_node_~node~0#1.base| v_ArrVal_644) |c_chain_node_#in~ppnode#1.base| v_ArrVal_645) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:24:21,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:21,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:21,162 INFO L321 Elim1Store]: treesize reduction 43, result has 47.6 percent of original size [2022-11-20 12:24:21,162 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 4 case distinctions, treesize of input 32 treesize of output 57 [2022-11-20 12:24:21,192 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 6 treesize of output 4 [2022-11-20 12:24:21,295 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 21 [2022-11-20 12:24:21,358 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 12 treesize of output 8 [2022-11-20 12:24:21,529 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_649 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_650 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_649) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_650) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-11-20 12:24:21,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:21,619 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-20 12:24:21,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 101 [2022-11-20 12:24:21,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:24:21,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:24:21,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:24:21,807 INFO L321 Elim1Store]: treesize reduction 73, result has 19.8 percent of original size [2022-11-20 12:24:21,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 64 [2022-11-20 12:24:21,819 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 29 treesize of output 21 [2022-11-20 12:24:21,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-11-20 12:24:22,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:24:22,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 54 [2022-11-20 12:24:22,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:24:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-20 12:24:22,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:22,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239049054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:22,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:22,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 29 [2022-11-20 12:24:22,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527647788] [2022-11-20 12:24:22,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:22,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:24:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:24:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=671, Unknown=5, NotChecked=106, Total=870 [2022-11-20 12:24:22,503 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 29 states, 23 states have (on average 2.260869565217391) internal successors, (52), 26 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:24:23,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:23,903 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2022-11-20 12:24:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:24:23,904 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 23 states have (on average 2.260869565217391) internal successors, (52), 26 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2022-11-20 12:24:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:23,906 INFO L225 Difference]: With dead ends: 137 [2022-11-20 12:24:23,906 INFO L226 Difference]: Without dead ends: 134 [2022-11-20 12:24:23,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=168, Invalid=1317, Unknown=5, NotChecked=150, Total=1640 [2022-11-20 12:24:23,908 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 148 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:23,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 739 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1048 Invalid, 0 Unknown, 384 Unchecked, 0.9s Time] [2022-11-20 12:24:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-20 12:24:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2022-11-20 12:24:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 104 states have internal predecessors, (115), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 12:24:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2022-11-20 12:24:23,929 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 42 [2022-11-20 12:24:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:23,930 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2022-11-20 12:24:23,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 23 states have (on average 2.260869565217391) internal successors, (52), 26 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:24:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2022-11-20 12:24:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:24:23,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:23,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:23,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:24,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:24,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1343975071, now seen corresponding path program 1 times [2022-11-20 12:24:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:24,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693712140] [2022-11-20 12:24:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:24:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:24:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:24:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693712140] [2022-11-20 12:24:28,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693712140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026647303] [2022-11-20 12:24:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:28,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:28,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:28,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:28,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:24:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:29,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-20 12:24:29,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:29,218 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 44 treesize of output 42 [2022-11-20 12:24:29,388 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:24:29,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:24:29,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:24:29,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:24:29,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:29,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:29,434 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 51 treesize of output 9 [2022-11-20 12:24:29,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:24:29,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 12:24:29,761 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 8 treesize of output 4 [2022-11-20 12:24:29,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:24:30,059 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:24:30,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:24:30,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:24:30,088 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 12 treesize of output 11 [2022-11-20 12:24:30,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-11-20 12:24:30,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:24:30,186 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 26 treesize of output 22 [2022-11-20 12:24:30,200 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 12:24:30,201 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 29 [2022-11-20 12:24:30,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:30,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2022-11-20 12:24:30,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:24:30,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:24:30,704 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-20 12:24:30,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 45 [2022-11-20 12:24:30,736 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:24:30,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2022-11-20 12:24:30,888 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:24:30,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-11-20 12:24:30,901 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-20 12:24:30,901 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 48 treesize of output 23 [2022-11-20 12:24:30,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:24:31,206 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_982 (Array Int Int)) (|chain_node_~node~0#1.offset| Int) (v_ArrVal_983 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_982 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_982) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (= (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_983 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_983) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse1 |c_chain_node_#in~ppnode#1.base| (store (select .cse1 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.offset|))) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:24:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:31,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:31,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:31,303 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 12:24:31,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 57 [2022-11-20 12:24:31,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:31,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:31,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:31,363 INFO L321 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2022-11-20 12:24:31,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 88 [2022-11-20 12:24:31,380 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 10 treesize of output 9 [2022-11-20 12:24:31,392 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 10 treesize of output 9 [2022-11-20 12:24:31,412 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-20 12:24:31,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:24:31,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 12:24:31,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 12:24:31,504 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 0 case distinctions, treesize of input 79 treesize of output 67 [2022-11-20 12:24:31,814 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2022-11-20 12:24:32,500 INFO L321 Elim1Store]: treesize reduction 16, result has 82.8 percent of original size [2022-11-20 12:24:32,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 241 [2022-11-20 12:24:35,371 INFO L321 Elim1Store]: treesize reduction 68, result has 78.3 percent of original size [2022-11-20 12:24:35,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 326 [2022-11-20 12:24:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-20 12:24:38,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:38,991 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~node~0#1.offset_10| Int) (|v_chain_node_~node~0#1.base_10| Int) (v_ArrVal_1013 (Array Int Int)) (v_ArrVal_1012 (Array Int Int))) (or (not (= (select |c_#valid| |v_chain_node_~node~0#1.base_10|) 0)) (not (= (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_10| (store v_ArrVal_1012 |v_chain_node_~node~0#1.offset_10| (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_10| v_ArrVal_1012) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))))) (store .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| |v_chain_node_~node~0#1.base_10|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_10| (store v_ArrVal_1013 |v_chain_node_~node~0#1.offset_10| (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_10| v_ArrVal_1013) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))))) (store .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| |v_chain_node_~node~0#1.offset_10|))) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) 0)) (not (< |v_chain_node_~node~0#1.base_10| |c_#StackHeapBarrier|)))) is different from false [2022-11-20 12:24:38,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026647303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:38,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:38,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 39 [2022-11-20 12:24:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254675905] [2022-11-20 12:24:38,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 12:24:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 12:24:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1618, Unknown=2, NotChecked=162, Total=1892 [2022-11-20 12:24:39,000 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 39 states, 31 states have (on average 2.193548387096774) internal successors, (68), 34 states have internal predecessors, (68), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:24:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:43,743 INFO L93 Difference]: Finished difference Result 180 states and 224 transitions. [2022-11-20 12:24:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 12:24:43,743 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 2.193548387096774) internal successors, (68), 34 states have internal predecessors, (68), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-11-20 12:24:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:43,745 INFO L225 Difference]: With dead ends: 180 [2022-11-20 12:24:43,746 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 12:24:43,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=230, Invalid=3316, Unknown=2, NotChecked=234, Total=3782 [2022-11-20 12:24:43,748 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 118 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 910 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:43,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1301 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1653 Invalid, 0 Unknown, 910 Unchecked, 1.7s Time] [2022-11-20 12:24:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 12:24:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 131. [2022-11-20 12:24:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 101 states have (on average 1.2376237623762376) internal successors, (125), 111 states have internal predecessors, (125), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 12:24:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2022-11-20 12:24:43,774 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 46 [2022-11-20 12:24:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:43,775 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2022-11-20 12:24:43,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 2.193548387096774) internal successors, (68), 34 states have internal predecessors, (68), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:24:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2022-11-20 12:24:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:24:43,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:43,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:43,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:43,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:43,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1320962275, now seen corresponding path program 1 times [2022-11-20 12:24:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:43,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107381020] [2022-11-20 12:24:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:24:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:24:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:24:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:24:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107381020] [2022-11-20 12:24:45,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107381020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426056964] [2022-11-20 12:24:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:45,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:45,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:45,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:24:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:46,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-20 12:24:46,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:46,154 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 14 treesize of output 12 [2022-11-20 12:24:46,327 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:24:46,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:24:46,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:24:46,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:24:46,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2022-11-20 12:24:46,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:24:46,507 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 24 treesize of output 19 [2022-11-20 12:24:46,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-20 12:24:46,716 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1405 (Array Int Int)) (v_ArrVal_1404 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1405) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1404) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-11-20 12:24:46,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:46,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 12:24:46,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-11-20 12:24:46,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-20 12:24:47,003 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_1409 (Array Int Int)) (v_ArrVal_1408 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_1408 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1408) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1409)))) is different from true [2022-11-20 12:24:47,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:47,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:47,032 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 51 treesize of output 47 [2022-11-20 12:24:47,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-20 12:24:47,051 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 23 treesize of output 17 [2022-11-20 12:24:47,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:47,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-11-20 12:24:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-20 12:24:47,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:47,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426056964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:47,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:47,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2022-11-20 12:24:47,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981721751] [2022-11-20 12:24:47,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:47,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:24:47,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:47,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:24:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=767, Unknown=10, NotChecked=114, Total=992 [2022-11-20 12:24:47,443 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 31 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 8 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 12:24:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:48,945 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2022-11-20 12:24:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:24:48,946 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 8 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 49 [2022-11-20 12:24:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:48,949 INFO L225 Difference]: With dead ends: 206 [2022-11-20 12:24:48,949 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 12:24:48,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=1458, Unknown=10, NotChecked=158, Total=1806 [2022-11-20 12:24:48,953 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 215 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 568 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:48,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 622 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 991 Invalid, 0 Unknown, 568 Unchecked, 0.9s Time] [2022-11-20 12:24:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 12:24:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 161. [2022-11-20 12:24:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 125 states have (on average 1.232) internal successors, (154), 137 states have internal predecessors, (154), 28 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (19), 15 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-20 12:24:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2022-11-20 12:24:49,010 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 49 [2022-11-20 12:24:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:49,013 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2022-11-20 12:24:49,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 8 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 12:24:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2022-11-20 12:24:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:24:49,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:49,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:49,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:49,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:49,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2055778686, now seen corresponding path program 1 times [2022-11-20 12:24:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884289052] [2022-11-20 12:24:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:24:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:24:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:24:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:24:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:53,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884289052] [2022-11-20 12:24:53,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884289052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:53,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141828720] [2022-11-20 12:24:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:53,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:53,494 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:53,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:24:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:53,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 140 conjunts are in the unsatisfiable core [2022-11-20 12:24:53,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:53,804 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 14 treesize of output 12 [2022-11-20 12:24:53,942 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 [2022-11-20 12:24:53,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:53,994 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 16 treesize of output 17 [2022-11-20 12:24:54,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,005 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 16 treesize of output 17 [2022-11-20 12:24:54,092 INFO L321 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2022-11-20 12:24:54,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2022-11-20 12:24:54,147 INFO L321 Elim1Store]: treesize reduction 32, result has 57.3 percent of original size [2022-11-20 12:24:54,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 53 [2022-11-20 12:24:54,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,524 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 34 treesize of output 32 [2022-11-20 12:24:54,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:24:54,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2022-11-20 12:24:54,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:24:54,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 27 [2022-11-20 12:24:54,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,664 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 12:24:54,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:24:54,884 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1746 (Array Int Int)) (v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1741 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_1741 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1741) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1746) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_1742 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_1742) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:24:54,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,965 INFO L321 Elim1Store]: treesize reduction 52, result has 8.8 percent of original size [2022-11-20 12:24:54,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 73 [2022-11-20 12:24:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:54,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2022-11-20 12:24:54,994 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 59 treesize of output 45 [2022-11-20 12:24:55,004 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 12 treesize of output 11 [2022-11-20 12:24:55,013 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 10 treesize of output 9 [2022-11-20 12:24:55,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-20 12:24:55,034 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 12:24:55,034 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 15 treesize of output 15 [2022-11-20 12:24:56,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:56,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:56,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:24:56,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 94 treesize of output 50 [2022-11-20 12:24:56,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:56,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:56,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:56,262 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:24:56,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 24 [2022-11-20 12:24:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-20 12:24:56,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:56,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141828720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:56,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:56,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2022-11-20 12:24:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027988457] [2022-11-20 12:24:56,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:56,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:24:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:24:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=621, Unknown=1, NotChecked=50, Total=756 [2022-11-20 12:24:56,917 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand has 26 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 24 states have internal predecessors, (73), 7 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 12:24:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:59,017 INFO L93 Difference]: Finished difference Result 196 states and 242 transitions. [2022-11-20 12:24:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:24:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 24 states have internal predecessors, (73), 7 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 50 [2022-11-20 12:24:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:59,020 INFO L225 Difference]: With dead ends: 196 [2022-11-20 12:24:59,020 INFO L226 Difference]: Without dead ends: 193 [2022-11-20 12:24:59,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=152, Invalid=1110, Unknown=2, NotChecked=68, Total=1332 [2022-11-20 12:24:59,022 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 89 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 757 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 824 Invalid, 0 Unknown, 414 Unchecked, 0.9s Time] [2022-11-20 12:24:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-20 12:24:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2022-11-20 12:24:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 128 states have internal predecessors, (143), 23 states have call successors, (23), 8 states have call predecessors, (23), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:24:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 180 transitions. [2022-11-20 12:24:59,055 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 180 transitions. Word has length 50 [2022-11-20 12:24:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:59,056 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 180 transitions. [2022-11-20 12:24:59,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 24 states have internal predecessors, (73), 7 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 12:24:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 180 transitions. [2022-11-20 12:24:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:24:59,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:59,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:59,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:59,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:24:59,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1969592115, now seen corresponding path program 1 times [2022-11-20 12:24:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:59,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546239099] [2022-11-20 12:24:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:25:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:25:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:25:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:25:05,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:05,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546239099] [2022-11-20 12:25:05,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546239099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:05,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741347632] [2022-11-20 12:25:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:05,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:05,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:05,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:05,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:25:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:05,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 184 conjunts are in the unsatisfiable core [2022-11-20 12:25:05,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:05,817 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:25:05,817 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 23 treesize of output 19 [2022-11-20 12:25:06,065 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:25:06,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:25:06,095 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:25:06,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:25:06,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:25:06,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:25:06,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:25:06,131 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 12 treesize of output 11 [2022-11-20 12:25:06,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-20 12:25:06,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:25:06,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-11-20 12:25:06,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:25:06,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:25:06,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 12:25:06,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 12:25:06,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-20 12:25:06,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:25:06,726 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 [2022-11-20 12:25:07,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-20 12:25:07,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-11-20 12:25:07,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:25:07,173 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 16 treesize of output 15 [2022-11-20 12:25:07,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:25:07,201 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 12 treesize of output 11 [2022-11-20 12:25:07,515 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-20 12:25:07,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 50 [2022-11-20 12:25:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-11-20 12:25:07,723 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 12:25:07,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 25 [2022-11-20 12:25:07,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:25:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:07,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-20 12:25:08,088 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2105 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2110 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_2102 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2102) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2105) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2110)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:25:08,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,182 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-20 12:25:08,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 82 [2022-11-20 12:25:08,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 56 [2022-11-20 12:25:08,223 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 10 treesize of output 9 [2022-11-20 12:25:08,231 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 60 treesize of output 46 [2022-11-20 12:25:08,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 12:25:08,257 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 12:25:08,258 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 15 treesize of output 15 [2022-11-20 12:25:09,952 INFO L321 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2022-11-20 12:25:09,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 53 [2022-11-20 12:25:09,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,982 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:25:09,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 28 [2022-11-20 12:25:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2022-11-20 12:25:10,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:10,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741347632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:10,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:10,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23] total 39 [2022-11-20 12:25:10,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447640788] [2022-11-20 12:25:10,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:10,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 12:25:10,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 12:25:10,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1439, Unknown=1, NotChecked=76, Total=1640 [2022-11-20 12:25:10,731 INFO L87 Difference]: Start difference. First operand 149 states and 180 transitions. Second operand has 39 states, 32 states have (on average 2.40625) internal successors, (77), 34 states have internal predecessors, (77), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:25:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:12,771 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2022-11-20 12:25:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:25:12,772 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 2.40625) internal successors, (77), 34 states have internal predecessors, (77), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-20 12:25:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:12,774 INFO L225 Difference]: With dead ends: 248 [2022-11-20 12:25:12,774 INFO L226 Difference]: Without dead ends: 178 [2022-11-20 12:25:12,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=185, Invalid=2074, Unknown=1, NotChecked=92, Total=2352 [2022-11-20 12:25:12,776 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 88 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:12,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 913 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1137 Invalid, 0 Unknown, 311 Unchecked, 1.2s Time] [2022-11-20 12:25:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-20 12:25:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 170. [2022-11-20 12:25:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 135 states have (on average 1.2) internal successors, (162), 146 states have internal predecessors, (162), 26 states have call successors, (26), 9 states have call predecessors, (26), 8 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 12:25:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 205 transitions. [2022-11-20 12:25:12,809 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 205 transitions. Word has length 50 [2022-11-20 12:25:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:12,810 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 205 transitions. [2022-11-20 12:25:12,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 2.40625) internal successors, (77), 34 states have internal predecessors, (77), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:25:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 205 transitions. [2022-11-20 12:25:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:25:12,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:12,812 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:12,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:13,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:25:13,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:13,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1872718035, now seen corresponding path program 1 times [2022-11-20 12:25:13,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:13,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675281846] [2022-11-20 12:25:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:13,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:25:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:25:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:25:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:25:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:25:15,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:15,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675281846] [2022-11-20 12:25:15,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675281846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:15,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242749876] [2022-11-20 12:25:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:15,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:15,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:15,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:15,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:25:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:15,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-20 12:25:15,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:15,431 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:25:15,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:25:15,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:25:15,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:25:15,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2022-11-20 12:25:15,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:25:15,660 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:25:15,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-20 12:25:15,723 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:25:15,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2022-11-20 12:25:15,886 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_2520 (Array Int Int)) (v_ArrVal_2518 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2520) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2518) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:25:15,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:15,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:15,942 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 12:25:15,942 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 2 case distinctions, treesize of input 34 treesize of output 44 [2022-11-20 12:25:15,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-20 12:25:15,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2022-11-20 12:25:16,167 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-20 12:25:16,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2022-11-20 12:25:16,327 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-20 12:25:16,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2022-11-20 12:25:16,426 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2525 (Array Int Int)) (v_ArrVal_2524 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2525) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2524) |c_#memory_$Pointer$.base|) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-20 12:25:16,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:16,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:16,499 INFO L321 Elim1Store]: treesize reduction 41, result has 48.1 percent of original size [2022-11-20 12:25:16,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 72 [2022-11-20 12:25:16,523 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 19 treesize of output 13 [2022-11-20 12:25:16,558 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 12 treesize of output 8 [2022-11-20 12:25:16,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-20 12:25:16,656 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 12 treesize of output 8 [2022-11-20 12:25:16,736 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2528 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2529 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2529) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2528) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-11-20 12:25:16,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:16,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:16,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:16,782 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 12:25:16,782 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 2 case distinctions, treesize of input 27 treesize of output 41 [2022-11-20 12:25:16,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:25:16,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:16,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-20 12:25:16,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:16,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-11-20 12:25:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2022-11-20 12:25:16,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:17,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242749876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:17,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:17,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 31 [2022-11-20 12:25:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128911627] [2022-11-20 12:25:17,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:25:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:25:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=722, Unknown=4, NotChecked=168, Total=992 [2022-11-20 12:25:17,177 INFO L87 Difference]: Start difference. First operand 170 states and 205 transitions. Second operand has 31 states, 26 states have (on average 2.230769230769231) internal successors, (58), 28 states have internal predecessors, (58), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-20 12:25:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:18,488 INFO L93 Difference]: Finished difference Result 200 states and 242 transitions. [2022-11-20 12:25:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:25:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 2.230769230769231) internal successors, (58), 28 states have internal predecessors, (58), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 51 [2022-11-20 12:25:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:18,490 INFO L225 Difference]: With dead ends: 200 [2022-11-20 12:25:18,490 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 12:25:18,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=201, Invalid=1529, Unknown=4, NotChecked=246, Total=1980 [2022-11-20 12:25:18,492 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 200 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 535 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:18,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 684 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 856 Invalid, 0 Unknown, 535 Unchecked, 0.7s Time] [2022-11-20 12:25:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 12:25:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 182. [2022-11-20 12:25:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 157 states have internal predecessors, (175), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 12:25:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2022-11-20 12:25:18,522 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 51 [2022-11-20 12:25:18,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:18,522 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2022-11-20 12:25:18,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 2.230769230769231) internal successors, (58), 28 states have internal predecessors, (58), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-20 12:25:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2022-11-20 12:25:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 12:25:18,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:18,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:18,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:18,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1808852267, now seen corresponding path program 1 times [2022-11-20 12:25:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165724399] [2022-11-20 12:25:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:25:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:25:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:25:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:25:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:25:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165724399] [2022-11-20 12:25:26,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165724399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474273164] [2022-11-20 12:25:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:26,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:26,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:26,160 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:26,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:25:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:26,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 237 conjunts are in the unsatisfiable core [2022-11-20 12:25:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:26,518 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-20 12:25:26,518 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 2 case distinctions, treesize of input 26 treesize of output 31 [2022-11-20 12:25:26,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:25:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:26,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:25:26,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:26,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:25:26,989 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2022-11-20 12:25:26,990 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 62 treesize of output 61 [2022-11-20 12:25:26,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:25:27,044 INFO L321 Elim1Store]: treesize reduction 46, result has 34.3 percent of original size [2022-11-20 12:25:27,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 84 [2022-11-20 12:25:27,092 INFO L321 Elim1Store]: treesize reduction 19, result has 57.8 percent of original size [2022-11-20 12:25:27,092 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 90 treesize of output 81 [2022-11-20 12:25:27,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-11-20 12:25:27,144 INFO L321 Elim1Store]: treesize reduction 56, result has 34.9 percent of original size [2022-11-20 12:25:27,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 94 [2022-11-20 12:25:27,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-20 12:25:27,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:25:27,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 28 [2022-11-20 12:25:27,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 28 [2022-11-20 12:25:27,342 INFO L321 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2022-11-20 12:25:27,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 74 [2022-11-20 12:25:27,447 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-20 12:25:27,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 95 [2022-11-20 12:25:27,504 INFO L321 Elim1Store]: treesize reduction 44, result has 26.7 percent of original size [2022-11-20 12:25:27,504 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 5 case distinctions, treesize of input 32 treesize of output 22 [2022-11-20 12:25:27,531 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 12:25:27,531 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 3 case distinctions, treesize of input 40 treesize of output 15 [2022-11-20 12:25:27,578 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:25:27,578 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 7 [2022-11-20 12:25:27,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:27,611 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 33 [2022-11-20 12:25:27,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:27,623 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 33 treesize of output 35 [2022-11-20 12:25:27,657 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 88 treesize of output 68 [2022-11-20 12:25:27,884 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-11-20 12:25:27,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 106 [2022-11-20 12:25:28,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:28,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:28,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 12:25:28,313 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 12:25:28,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 53 [2022-11-20 12:25:28,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:28,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:28,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2022-11-20 12:25:28,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:28,500 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2022-11-20 12:25:28,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:28,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:25:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,156 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2022-11-20 12:25:29,157 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 61 [2022-11-20 12:25:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2022-11-20 12:25:29,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42 [2022-11-20 12:25:29,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-20 12:25:29,205 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 16 treesize of output 15 [2022-11-20 12:25:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,239 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-11-20 12:25:29,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2022-11-20 12:25:29,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:25:29,718 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 12:25:29,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 129 treesize of output 80 [2022-11-20 12:25:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:29,781 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:25:29,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 60 [2022-11-20 12:25:30,050 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 12:25:30,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 125 treesize of output 55 [2022-11-20 12:25:30,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,072 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:25:30,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 16 [2022-11-20 12:25:30,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 12:25:30,395 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2887 (Array Int Int)) (v_ArrVal_2886 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2883 (Array Int Int)) (v_ArrVal_2893 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2887) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2893) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_2883 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2883) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2886) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:25:30,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,509 INFO L321 Elim1Store]: treesize reduction 110, result has 9.1 percent of original size [2022-11-20 12:25:30,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 189 treesize of output 145 [2022-11-20 12:25:30,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,551 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:25:30,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 71 [2022-11-20 12:25:30,570 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 10 treesize of output 9 [2022-11-20 12:25:30,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 12:25:30,591 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 152 treesize of output 120 [2022-11-20 12:25:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:30,614 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-11-20 12:25:30,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2022-11-20 12:25:35,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:35,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:35,156 INFO L321 Elim1Store]: treesize reduction 74, result has 16.9 percent of original size [2022-11-20 12:25:35,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 26 case distinctions, treesize of input 237 treesize of output 119 [2022-11-20 12:25:35,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:35,201 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:25:35,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 30 [2022-11-20 12:25:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2022-11-20 12:25:35,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:03,217 WARN L233 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:26:18,719 WARN L233 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:26:31,892 WARN L233 SmtUtils]: Spent 10.26s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:26:33,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474273164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:33,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:26:33,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 49 [2022-11-20 12:26:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711488664] [2022-11-20 12:26:33,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:33,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 12:26:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 12:26:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2973, Unknown=9, NotChecked=110, Total=3306 [2022-11-20 12:26:33,287 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 49 states, 41 states have (on average 2.073170731707317) internal successors, (85), 45 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:26:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:38,718 INFO L93 Difference]: Finished difference Result 227 states and 272 transitions. [2022-11-20 12:26:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:26:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 41 states have (on average 2.073170731707317) internal successors, (85), 45 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2022-11-20 12:26:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:38,721 INFO L225 Difference]: With dead ends: 227 [2022-11-20 12:26:38,721 INFO L226 Difference]: Without dead ends: 224 [2022-11-20 12:26:38,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 65.1s TimeCoverageRelationStatistics Valid=324, Invalid=4363, Unknown=9, NotChecked=134, Total=4830 [2022-11-20 12:26:38,724 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 113 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 684 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:38,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1378 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1808 Invalid, 0 Unknown, 684 Unchecked, 3.2s Time] [2022-11-20 12:26:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-20 12:26:38,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 194. [2022-11-20 12:26:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 157 states have (on average 1.1847133757961783) internal successors, (186), 167 states have internal predecessors, (186), 26 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 12:26:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 229 transitions. [2022-11-20 12:26:38,763 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 229 transitions. Word has length 53 [2022-11-20 12:26:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:38,763 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 229 transitions. [2022-11-20 12:26:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 41 states have (on average 2.073170731707317) internal successors, (85), 45 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:26:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 229 transitions. [2022-11-20 12:26:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:26:38,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:38,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:38,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:38,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:38,972 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 830072921, now seen corresponding path program 1 times [2022-11-20 12:26:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:38,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742993647] [2022-11-20 12:26:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:38,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:26:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:26:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:26:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:26:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:26:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:46,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742993647] [2022-11-20 12:26:46,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742993647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:46,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897058297] [2022-11-20 12:26:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:46,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:46,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:46,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:46,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:26:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:46,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 170 conjunts are in the unsatisfiable core [2022-11-20 12:26:46,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:46,385 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 14 treesize of output 12 [2022-11-20 12:26:46,534 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:26:46,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:26:46,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:26:46,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:26:46,601 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-11-20 12:26:46,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 26 [2022-11-20 12:26:46,605 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 21 treesize of output 15 [2022-11-20 12:26:47,166 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 12:26:47,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 70 [2022-11-20 12:26:47,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:26:47,334 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 8 treesize of output 4 [2022-11-20 12:26:47,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:26:47,783 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:26:47,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:26:47,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:26:47,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:26:47,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:47,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-20 12:26:47,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:26:47,927 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:26:47,928 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 21 [2022-11-20 12:26:48,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:48,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:48,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2022-11-20 12:26:48,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 12:26:48,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:26:48,743 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 12:26:48,743 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 87 treesize of output 60 [2022-11-20 12:26:48,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:48,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:48,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:48,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 33 [2022-11-20 12:26:48,771 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 12 treesize of output 11 [2022-11-20 12:26:48,940 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 12:26:48,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 23 [2022-11-20 12:26:48,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:26:48,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:26:49,311 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~ppnode#1.offset| Int) (v_ArrVal_3320 (Array Int Int)) (v_ArrVal_3321 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3327 (Array Int Int)) (v_ArrVal_3328 (Array Int Int)) (|chain_node_~node~0#1.offset| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_3320 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3320) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3328) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_3321 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3321) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3327)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:26:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:49,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:49,411 INFO L321 Elim1Store]: treesize reduction 52, result has 8.8 percent of original size [2022-11-20 12:26:49,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 62 [2022-11-20 12:26:49,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:49,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:49,430 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 35 treesize of output 33 [2022-11-20 12:26:49,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:49,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-20 12:26:49,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:49,481 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 20 treesize of output 24 [2022-11-20 12:26:49,524 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-20 12:26:49,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-20 12:26:49,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:26:49,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:26:49,918 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:26:49,918 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 45 treesize of output 24 [2022-11-20 12:26:49,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 12:26:49,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:26:50,226 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~ppnode#1.offset| Int) (v_ArrVal_3333 (Array Int Int)) (v_ArrVal_3334 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3336 (Array Int Int)) (v_ArrVal_3339 (Array Int Int)) (|chain_node_~node~0#1.offset| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3336) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3339) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_3333 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3333) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3334)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:26:50,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:50,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:50,275 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 24 treesize of output 26 [2022-11-20 12:26:50,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:50,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:50,311 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-20 12:26:50,312 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 65 [2022-11-20 12:26:50,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:26:50,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:26:50,369 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-20 12:26:50,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 12:26:50,559 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 [2022-11-20 12:26:51,042 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:26:51,043 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 41 treesize of output 20 [2022-11-20 12:26:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 18 refuted. 2 times theorem prover too weak. 1 trivial. 10 not checked. [2022-11-20 12:26:51,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:51,284 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~ppnode#1.offset_29| Int) (|v_chain_node_~node~0#1.base_31| Int) (v_ArrVal_3355 (Array Int Int)) (v_ArrVal_3356 (Array Int Int)) (v_ArrVal_3357 (Array Int Int)) (v_ArrVal_3359 (Array Int Int)) (|v_chain_node_~node~0#1.offset_28| Int)) (or (not (< |v_chain_node_~node~0#1.base_31| |c_#StackHeapBarrier|)) (not (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_31| v_ArrVal_3356) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_3357))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_31| (store v_ArrVal_3359 |v_chain_node_~node~0#1.offset_28| (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_31| v_ArrVal_3359) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |v_chain_node_~ppnode#1.offset_29|))) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_3355) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) 0)) (not (= (select |c_#valid| |v_chain_node_~node~0#1.base_31|) 0)))) is different from false [2022-11-20 12:26:51,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897058297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:51,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:26:51,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 47 [2022-11-20 12:26:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690864871] [2022-11-20 12:26:51,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 12:26:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 12:26:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1834, Unknown=12, NotChecked=264, Total=2256 [2022-11-20 12:26:51,289 INFO L87 Difference]: Start difference. First operand 194 states and 229 transitions. Second operand has 47 states, 40 states have (on average 2.1) internal successors, (84), 42 states have internal predecessors, (84), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-20 12:26:53,049 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))) (let ((.cse0 (not (= .cse1 0)))) (and (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or (and .cse0 (exists ((v_DerPreprocessor_26 (Array Int Int)) (v_DerPreprocessor_25 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse1) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_25) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_DerPreprocessor_26) .cse1 v_DerPreprocessor_25) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_DerPreprocessor_26) .cse1)) (= (select v_DerPreprocessor_26 |c_ULTIMATE.start_create_sll_~#list~0#1.offset|) .cse1)))) (and (= .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (not (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| 0)))) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) .cse0 (not (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| |c_ULTIMATE.start_create_sll_~pp1#1.offset|) (= |c_ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p1~0#1.base|) (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (not (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (or (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (not (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_main_~#p2~0#1.base|))) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0)))) is different from true [2022-11-20 12:26:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:55,613 INFO L93 Difference]: Finished difference Result 325 states and 390 transitions. [2022-11-20 12:26:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:26:55,613 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 2.1) internal successors, (84), 42 states have internal predecessors, (84), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 55 [2022-11-20 12:26:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:55,616 INFO L225 Difference]: With dead ends: 325 [2022-11-20 12:26:55,616 INFO L226 Difference]: Without dead ends: 322 [2022-11-20 12:26:55,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=251, Invalid=2942, Unknown=15, NotChecked=452, Total=3660 [2022-11-20 12:26:55,618 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 126 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 706 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:55,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 904 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1413 Invalid, 0 Unknown, 706 Unchecked, 1.8s Time] [2022-11-20 12:26:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-20 12:26:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 275. [2022-11-20 12:26:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 223 states have (on average 1.201793721973094) internal successors, (268), 237 states have internal predecessors, (268), 38 states have call successors, (38), 14 states have call predecessors, (38), 13 states have return successors, (30), 23 states have call predecessors, (30), 29 states have call successors, (30) [2022-11-20 12:26:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 336 transitions. [2022-11-20 12:26:55,672 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 336 transitions. Word has length 55 [2022-11-20 12:26:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:55,672 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 336 transitions. [2022-11-20 12:26:55,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 2.1) internal successors, (84), 42 states have internal predecessors, (84), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-20 12:26:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 336 transitions. [2022-11-20 12:26:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:26:55,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:55,674 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:55,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 12:26:55,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:55,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash 992893756, now seen corresponding path program 1 times [2022-11-20 12:26:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:55,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466372539] [2022-11-20 12:26:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:26:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:26:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:26:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:27:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 12:27:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:27:04,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:04,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466372539] [2022-11-20 12:27:04,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466372539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:04,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077432003] [2022-11-20 12:27:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:04,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:04,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:04,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:04,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:27:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:04,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 223 conjunts are in the unsatisfiable core [2022-11-20 12:27:04,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:04,463 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 14 treesize of output 12 [2022-11-20 12:27:04,624 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:27:04,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:27:04,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:27:04,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:27:04,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:27:04,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-20 12:27:04,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:27:04,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:27:05,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 12:27:05,214 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 [2022-11-20 12:27:05,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:05,338 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 16 treesize of output 17 [2022-11-20 12:27:05,529 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2022-11-20 12:27:05,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 61 [2022-11-20 12:27:05,592 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-20 12:27:05,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 73 [2022-11-20 12:27:05,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:27:05,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2022-11-20 12:27:05,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2022-11-20 12:27:05,720 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 123 treesize of output 97 [2022-11-20 12:27:05,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 100 [2022-11-20 12:27:05,876 INFO L321 Elim1Store]: treesize reduction 61, result has 7.6 percent of original size [2022-11-20 12:27:05,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 370 treesize of output 421 [2022-11-20 12:27:06,122 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-20 12:27:06,122 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 25 treesize of output 27 [2022-11-20 12:27:06,182 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-20 12:27:06,182 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 3 case distinctions, treesize of input 45 treesize of output 45 [2022-11-20 12:27:06,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:06,680 INFO L321 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2022-11-20 12:27:06,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 333 treesize of output 455 [2022-11-20 12:27:06,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:06,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:06,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 91 [2022-11-20 12:27:06,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:27:06,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:27:07,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:07,397 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 104 [2022-11-20 12:27:07,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:07,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:07,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 58 [2022-11-20 12:27:07,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:27:07,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-20 12:27:07,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:07,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 32 [2022-11-20 12:27:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:07,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-20 12:27:07,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:27:08,144 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3772 (Array Int Int)) (v_ArrVal_3773 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3778 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3773) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3778)) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_3772 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3772) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:27:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-11-20 12:27:08,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,245 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2022-11-20 12:27:08,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 68 [2022-11-20 12:27:08,254 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 49 treesize of output 37 [2022-11-20 12:27:08,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-11-20 12:27:08,301 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-20 12:27:08,301 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 21 treesize of output 29 [2022-11-20 12:27:08,313 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 8 treesize of output 7 [2022-11-20 12:27:08,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:08,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 33 [2022-11-20 12:27:08,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:08,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2022-11-20 12:27:08,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:27:09,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 63 [2022-11-20 12:27:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:09,393 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-20 12:27:09,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 84 [2022-11-20 12:27:09,432 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-20 12:27:09,432 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 [2022-11-20 12:27:09,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2022-11-20 12:27:09,457 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 14 treesize of output 13 [2022-11-20 12:27:09,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-11-20 12:27:09,479 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 12 treesize of output 11 [2022-11-20 12:27:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:12,497 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 12:27:12,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 98 [2022-11-20 12:27:12,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:12,567 INFO L321 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2022-11-20 12:27:12,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 71 treesize of output 39 [2022-11-20 12:27:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-20 12:27:12,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:27:29,873 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:27:40,108 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:27:48,408 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:27:49,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077432003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:49,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:27:49,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 47 [2022-11-20 12:27:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043728213] [2022-11-20 12:27:49,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:27:49,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 12:27:49,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 12:27:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2539, Unknown=3, NotChecked=102, Total=2862 [2022-11-20 12:27:49,667 INFO L87 Difference]: Start difference. First operand 275 states and 336 transitions. Second operand has 47 states, 40 states have (on average 2.225) internal successors, (89), 43 states have internal predecessors, (89), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-20 12:27:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:55,002 INFO L93 Difference]: Finished difference Result 323 states and 392 transitions. [2022-11-20 12:27:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:27:55,003 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 2.225) internal successors, (89), 43 states have internal predecessors, (89), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 59 [2022-11-20 12:27:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:55,005 INFO L225 Difference]: With dead ends: 323 [2022-11-20 12:27:55,006 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 12:27:55,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=314, Invalid=3719, Unknown=3, NotChecked=124, Total=4160 [2022-11-20 12:27:55,008 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 97 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 822 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:55,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 901 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 822 Unchecked, 1.3s Time] [2022-11-20 12:27:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 12:27:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 266. [2022-11-20 12:27:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 215 states have (on average 1.1953488372093024) internal successors, (257), 229 states have internal predecessors, (257), 37 states have call successors, (37), 14 states have call predecessors, (37), 13 states have return successors, (31), 22 states have call predecessors, (31), 29 states have call successors, (31) [2022-11-20 12:27:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 325 transitions. [2022-11-20 12:27:55,080 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 325 transitions. Word has length 59 [2022-11-20 12:27:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:55,080 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 325 transitions. [2022-11-20 12:27:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 2.225) internal successors, (89), 43 states have internal predecessors, (89), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-20 12:27:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 325 transitions. [2022-11-20 12:27:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:27:55,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:55,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:55,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:55,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:55,290 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1079080327, now seen corresponding path program 1 times [2022-11-20 12:27:55,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:55,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309781124] [2022-11-20 12:27:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:27:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:28:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:28:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:28:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309781124] [2022-11-20 12:28:06,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309781124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:06,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247778571] [2022-11-20 12:28:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:06,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:06,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:06,505 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:06,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:28:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:06,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 241 conjunts are in the unsatisfiable core [2022-11-20 12:28:06,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:06,969 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 12:28:06,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2022-11-20 12:28:07,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:28:07,638 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:28:07,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:28:07,691 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:28:07,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:28:07,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:07,714 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 12 treesize of output 11 [2022-11-20 12:28:07,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:07,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:07,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:28:07,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-20 12:28:07,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:28:07,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-11-20 12:28:07,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:28:08,269 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-20 12:28:08,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 115 [2022-11-20 12:28:08,332 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 12:28:08,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 3 [2022-11-20 12:28:09,135 INFO L321 Elim1Store]: treesize reduction 23, result has 43.9 percent of original size [2022-11-20 12:28:09,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 139 [2022-11-20 12:28:09,191 INFO L321 Elim1Store]: treesize reduction 23, result has 43.9 percent of original size [2022-11-20 12:28:09,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 134 [2022-11-20 12:28:09,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:28:09,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:28:09,330 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 12 treesize of output 11 [2022-11-20 12:28:09,388 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 12 treesize of output 11 [2022-11-20 12:28:09,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:09,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:09,772 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-11-20 12:28:09,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 42 [2022-11-20 12:28:09,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-20 12:28:09,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-20 12:28:10,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-20 12:28:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-20 12:28:10,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2022-11-20 12:28:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:10,697 INFO L321 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2022-11-20 12:28:10,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 63 [2022-11-20 12:28:10,713 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 12 treesize of output 11 [2022-11-20 12:28:10,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:28:10,833 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 16 treesize of output 15 [2022-11-20 12:28:11,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2022-11-20 12:28:11,390 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-20 12:28:11,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 50 [2022-11-20 12:28:11,694 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 12:28:11,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 25 [2022-11-20 12:28:11,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-20 12:28:11,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:11,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 12:28:12,187 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4233 (Array Int Int)) (v_ArrVal_4235 (Array Int Int)) (v_ArrVal_4236 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4238 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4238) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4233) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (not (= |chain_node_~node~0#1.base| 0)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4235) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4236) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:28:12,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,301 INFO L321 Elim1Store]: treesize reduction 58, result has 7.9 percent of original size [2022-11-20 12:28:12,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 69 [2022-11-20 12:28:12,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2022-11-20 12:28:12,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:28:12,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2022-11-20 12:28:12,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,402 INFO L321 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2022-11-20 12:28:12,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 53 [2022-11-20 12:28:12,965 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-11-20 12:28:12,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 42 [2022-11-20 12:28:12,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-20 12:28:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:12,992 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 12:28:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2022-11-20 12:28:13,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,824 INFO L321 Elim1Store]: treesize reduction 87, result has 11.2 percent of original size [2022-11-20 12:28:13,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 125 [2022-11-20 12:28:13,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2022-11-20 12:28:13,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:28:13,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:13,901 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-20 12:28:13,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 44 [2022-11-20 12:28:13,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:16,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:16,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:16,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:16,697 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:28:16,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 36 [2022-11-20 12:28:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 22 refuted. 2 times theorem prover too weak. 4 trivial. 6 not checked. [2022-11-20 12:28:17,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:19,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247778571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:19,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:28:19,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 53 [2022-11-20 12:28:19,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548696999] [2022-11-20 12:28:19,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:19,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 12:28:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 12:28:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3328, Unknown=5, NotChecked=116, Total=3660 [2022-11-20 12:28:19,385 INFO L87 Difference]: Start difference. First operand 266 states and 325 transitions. Second operand has 53 states, 45 states have (on average 2.088888888888889) internal successors, (94), 48 states have internal predecessors, (94), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:28:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:25,736 INFO L93 Difference]: Finished difference Result 450 states and 552 transitions. [2022-11-20 12:28:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:28:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 45 states have (on average 2.088888888888889) internal successors, (94), 48 states have internal predecessors, (94), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 59 [2022-11-20 12:28:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:25,741 INFO L225 Difference]: With dead ends: 450 [2022-11-20 12:28:25,741 INFO L226 Difference]: Without dead ends: 373 [2022-11-20 12:28:25,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=387, Invalid=5310, Unknown=7, NotChecked=148, Total=5852 [2022-11-20 12:28:25,744 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 139 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 915 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:25,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1190 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1532 Invalid, 0 Unknown, 915 Unchecked, 2.9s Time] [2022-11-20 12:28:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-20 12:28:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 292. [2022-11-20 12:28:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 235 states have (on average 1.195744680851064) internal successors, (281), 250 states have internal predecessors, (281), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (36), 26 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-20 12:28:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 359 transitions. [2022-11-20 12:28:25,814 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 359 transitions. Word has length 59 [2022-11-20 12:28:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:25,814 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 359 transitions. [2022-11-20 12:28:25,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 45 states have (on average 2.088888888888889) internal successors, (94), 48 states have internal predecessors, (94), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:28:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 359 transitions. [2022-11-20 12:28:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:28:25,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:25,816 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:25,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 12:28:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:28:26,023 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1740102043, now seen corresponding path program 1 times [2022-11-20 12:28:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032003772] [2022-11-20 12:28:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:26,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:28:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:28:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:28:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:28:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032003772] [2022-11-20 12:28:32,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032003772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109573373] [2022-11-20 12:28:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:32,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:32,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:32,046 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:32,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:28:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:32,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 174 conjunts are in the unsatisfiable core [2022-11-20 12:28:32,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:32,477 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 14 treesize of output 12 [2022-11-20 12:28:32,656 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:28:32,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:28:32,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:32,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:28:32,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:28:32,690 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 51 treesize of output 9 [2022-11-20 12:28:32,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:28:32,739 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (or (and (= .cse0 |c_chain_node_#in~ppnode#1.base|) (not (= .cse0 0))) (exists ((v_DerPreprocessor_51 (Array Int Int)) (v_DerPreprocessor_52 (Array Int Int))) (let ((.cse1 (select v_DerPreprocessor_52 |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse0 .cse1) (not (= .cse1 0)) (= (select |c_#memory_$Pointer$.base| .cse1) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_51) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_52) .cse1 v_DerPreprocessor_51) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_52) .cse1))))))) is different from true [2022-11-20 12:28:33,176 INFO L321 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2022-11-20 12:28:33,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 71 [2022-11-20 12:28:33,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 12:28:33,337 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 8 treesize of output 4 [2022-11-20 12:28:33,411 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 [2022-11-20 12:28:33,702 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:28:33,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:28:33,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:33,726 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 12 treesize of output 11 [2022-11-20 12:28:33,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 39 [2022-11-20 12:28:33,804 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 39 treesize of output 35 [2022-11-20 12:28:33,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-11-20 12:28:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:34,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2022-11-20 12:28:34,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:28:34,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:28:34,447 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 12:28:34,447 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 68 treesize of output 35 [2022-11-20 12:28:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:34,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:34,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:28:34,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:28:35,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-20 12:28:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,261 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2022-11-20 12:28:35,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 49 [2022-11-20 12:28:35,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2022-11-20 12:28:35,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2022-11-20 12:28:35,291 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 25 treesize of output 21 [2022-11-20 12:28:35,302 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 12 treesize of output 11 [2022-11-20 12:28:35,343 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-11-20 12:28:35,343 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 25 treesize of output 29 [2022-11-20 12:28:35,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:28:35,777 INFO L321 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-11-20 12:28:35,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 66 [2022-11-20 12:28:35,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:35,788 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 47 treesize of output 45 [2022-11-20 12:28:36,022 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-11-20 12:28:36,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 41 [2022-11-20 12:28:36,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:28:36,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:28:36,314 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4693 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (v_ArrVal_4694 (Array Int Int)) (v_ArrVal_4695 (Array Int Int)) (v_ArrVal_4687 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_~node~0#1.offset| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_4687 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4687) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4694) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4693) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4695)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:28:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,407 INFO L321 Elim1Store]: treesize reduction 110, result has 9.1 percent of original size [2022-11-20 12:28:36,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 134 treesize of output 110 [2022-11-20 12:28:36,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:28:36,430 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 106 treesize of output 90 [2022-11-20 12:28:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:36,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 55 [2022-11-20 12:28:36,469 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 15 treesize of output 11 [2022-11-20 12:28:36,508 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 12:28:36,508 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 28 treesize of output 30 [2022-11-20 12:28:36,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:37,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:37,453 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:28:37,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 40 [2022-11-20 12:28:37,697 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-20 12:28:37,698 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 28 [2022-11-20 12:28:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 20 refuted. 2 times theorem prover too weak. 1 trivial. 10 not checked. [2022-11-20 12:28:37,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:37,929 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~ppnode#1.offset_38| Int) (|v_chain_node_~node~0#1.base_42| Int) (v_ArrVal_4710 (Array Int Int)) (|v_chain_node_~node~0#1.offset_37| Int) (v_ArrVal_4711 (Array Int Int)) (v_ArrVal_4712 (Array Int Int)) (v_ArrVal_4713 (Array Int Int))) (or (not (= (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_42| v_ArrVal_4710) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_4712)) (.cse0 (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_42| (store v_ArrVal_4713 |v_chain_node_~node~0#1.offset_37| (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_42| v_ArrVal_4713) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |v_chain_node_~ppnode#1.offset_38|))) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_4711))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) 0)) (not (< |v_chain_node_~node~0#1.base_42| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_chain_node_~node~0#1.base_42|) 0)))) is different from false [2022-11-20 12:28:37,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109573373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:37,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:28:37,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 49 [2022-11-20 12:28:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308547369] [2022-11-20 12:28:37,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 12:28:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 12:28:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2019, Unknown=14, NotChecked=276, Total=2450 [2022-11-20 12:28:37,935 INFO L87 Difference]: Start difference. First operand 292 states and 359 transitions. Second operand has 49 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 44 states have internal predecessors, (91), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:28:39,814 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))) (let ((.cse0 (+ |c_#StackHeapBarrier| 1)) (.cse1 (not (= .cse2 0)))) (and (<= .cse0 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) .cse1 (not (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (not (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_main_~#p2~0#1.base|)) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| |c_ULTIMATE.start_create_sll_~pp1#1.offset|) (= |c_ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (not (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (or (and (= .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) .cse1) (exists ((v_DerPreprocessor_51 (Array Int Int)) (v_DerPreprocessor_52 (Array Int Int))) (let ((.cse3 (select v_DerPreprocessor_52 |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))) (and (= .cse3 .cse2) (= (select |c_#memory_$Pointer$.base| .cse3) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse3 v_DerPreprocessor_51) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_DerPreprocessor_52) .cse3 v_DerPreprocessor_51) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_DerPreprocessor_52) .cse3)) (not (= .cse3 0)))))) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0)))) is different from true [2022-11-20 12:28:40,434 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (let ((.cse1 (not (= .cse0 0)))) (and (or (and (= .cse0 |c_chain_node_#in~ppnode#1.base|) .cse1) (exists ((v_DerPreprocessor_51 (Array Int Int)) (v_DerPreprocessor_52 (Array Int Int))) (let ((.cse2 (select v_DerPreprocessor_52 |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse0 .cse2) (not (= .cse2 0)) (= (select |c_#memory_$Pointer$.base| .cse2) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_51) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_52) .cse2 v_DerPreprocessor_51) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_52) .cse2)))))) .cse1))) is different from true [2022-11-20 12:28:43,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:43,296 INFO L93 Difference]: Finished difference Result 338 states and 417 transitions. [2022-11-20 12:28:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:28:43,297 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 44 states have internal predecessors, (91), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 59 [2022-11-20 12:28:43,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:43,299 INFO L225 Difference]: With dead ends: 338 [2022-11-20 12:28:43,299 INFO L226 Difference]: Without dead ends: 335 [2022-11-20 12:28:43,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=257, Invalid=3653, Unknown=16, NotChecked=630, Total=4556 [2022-11-20 12:28:43,301 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 109 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 689 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:43,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1485 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1604 Invalid, 0 Unknown, 689 Unchecked, 2.4s Time] [2022-11-20 12:28:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-20 12:28:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 324. [2022-11-20 12:28:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 261 states have (on average 1.1915708812260537) internal successors, (311), 278 states have internal predecessors, (311), 46 states have call successors, (46), 17 states have call predecessors, (46), 16 states have return successors, (41), 28 states have call predecessors, (41), 38 states have call successors, (41) [2022-11-20 12:28:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 398 transitions. [2022-11-20 12:28:43,390 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 398 transitions. Word has length 59 [2022-11-20 12:28:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:43,391 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 398 transitions. [2022-11-20 12:28:43,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 44 states have internal predecessors, (91), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:28:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 398 transitions. [2022-11-20 12:28:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:28:43,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:43,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:43,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 12:28:43,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:28:43,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash -186573861, now seen corresponding path program 1 times [2022-11-20 12:28:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025481325] [2022-11-20 12:28:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:43,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:28:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:28:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:28:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 12:28:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:28:54,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:54,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025481325] [2022-11-20 12:28:54,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025481325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:54,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916170605] [2022-11-20 12:28:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:54,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:54,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:28:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:55,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 275 conjunts are in the unsatisfiable core [2022-11-20 12:28:55,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:55,188 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 12:28:55,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2022-11-20 12:28:55,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 12:28:55,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:55,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:28:55,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:55,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:28:55,798 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2022-11-20 12:28:55,798 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 62 treesize of output 61 [2022-11-20 12:28:55,849 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-20 12:28:55,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 73 [2022-11-20 12:28:55,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:28:55,949 INFO L321 Elim1Store]: treesize reduction 32, result has 57.3 percent of original size [2022-11-20 12:28:55,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 53 [2022-11-20 12:28:55,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:28:56,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2022-11-20 12:28:56,081 INFO L321 Elim1Store]: treesize reduction 61, result has 7.6 percent of original size [2022-11-20 12:28:56,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 117 [2022-11-20 12:28:56,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:28:56,120 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-11-20 12:28:56,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 22 [2022-11-20 12:28:56,271 INFO L321 Elim1Store]: treesize reduction 44, result has 26.7 percent of original size [2022-11-20 12:28:56,271 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 5 case distinctions, treesize of input 32 treesize of output 22 [2022-11-20 12:28:56,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:28:56,334 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 77 [2022-11-20 12:28:56,347 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:28:56,348 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 37 treesize of output 31 [2022-11-20 12:28:56,877 INFO L321 Elim1Store]: treesize reduction 78, result has 33.9 percent of original size [2022-11-20 12:28:56,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 61 [2022-11-20 12:28:57,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 12:28:57,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:28:57,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 56 [2022-11-20 12:28:57,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:28:57,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 38 [2022-11-20 12:28:57,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 12:28:57,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-20 12:28:58,181 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5132 (Array Int Int)) (v_ArrVal_5133 (Array Int Int)) (v_ArrVal_5126 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5130 (Array Int Int))) (and (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| (select |c_#valid| |chain_node_~node~0#1.base|))) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5130) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5132) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_5126 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5126) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5133)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:28:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,303 INFO L321 Elim1Store]: treesize reduction 52, result has 8.8 percent of original size [2022-11-20 12:28:58,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 83 [2022-11-20 12:28:58,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-11-20 12:28:58,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-20 12:28:58,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:28:58,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:58,394 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-20 12:28:58,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-11-20 12:28:58,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 12:28:59,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-11-20 12:28:59,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,120 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-20 12:28:59,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 84 [2022-11-20 12:28:59,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2022-11-20 12:28:59,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:28:59,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 35 [2022-11-20 12:28:59,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-20 12:28:59,830 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5143 (Array Int Int)) (v_ArrVal_5145 (Array Int Int)) (v_ArrVal_5146 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5141 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5145) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5141) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5143) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5146)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:28:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 55 [2022-11-20 12:28:59,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,955 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-20 12:28:59,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 93 [2022-11-20 12:28:59,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:59,990 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 12:28:59,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2022-11-20 12:29:00,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:29:00,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2022-11-20 12:29:00,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:29:00,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 30 [2022-11-20 12:29:00,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-20 12:29:00,899 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5151 Int) (v_ArrVal_5159 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5148 Int)) (and (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (let ((.cse1 (store (store (select |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base|) 0 v_ArrVal_5151) 4 0))) (store .cse1 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| .cse1) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (let ((.cse2 (store (store (select |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base|) 0 v_ArrVal_5148) 4 0))) (store .cse2 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| .cse2) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5159)))) is different from true [2022-11-20 12:29:00,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:00,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:00,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,004 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:29:01,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 71 [2022-11-20 12:29:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,047 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-20 12:29:01,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 59 [2022-11-20 12:29:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:01,084 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-20 12:29:01,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 76 [2022-11-20 12:29:01,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:29:05,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:29:05,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:29:05,289 INFO L321 Elim1Store]: treesize reduction 52, result has 13.3 percent of original size [2022-11-20 12:29:05,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 132 treesize of output 65 [2022-11-20 12:29:05,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:05,349 INFO L321 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2022-11-20 12:29:05,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 30 [2022-11-20 12:29:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 12 not checked. [2022-11-20 12:29:05,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:29:29,582 WARN L233 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:29:43,153 WARN L233 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:29:54,581 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:29:55,544 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_chain_node_~node~0#1.base_47| Int)) (or (not (< |v_chain_node_~node~0#1.base_47| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_5185 Int) (v_ArrVal_5186 Int) (v_ArrVal_5184 (Array Int Int))) (let ((.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_47| (let ((.cse7 (store (store (select |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_47|) 0 v_ArrVal_5185) 4 0))) (store .cse7 0 (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_47| .cse7) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|)))))) (store .cse6 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse6 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| 0)))) (.cse0 (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_47| (let ((.cse5 (store (store (select |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_47|) 0 v_ArrVal_5186) 4 0))) (store .cse5 0 (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_47| .cse5) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|)))) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_5184))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#p2~0#1.base|) |c_ULTIMATE.start_main_~#p2~0#1.offset|)) (.cse3 (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (or (= (select (select .cse0 .cse1) (+ 4 (select (select .cse2 |c_ULTIMATE.start_main_~#p2~0#1.base|) |c_ULTIMATE.start_main_~#p2~0#1.offset|))) 0) (not (= (select .cse3 (+ .cse4 4)) 0)) (not (= .cse1 (select .cse3 .cse4))))))))) (forall ((|v_chain_node_~node~0#1.base_47| Int)) (or (not (< |v_chain_node_~node~0#1.base_47| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_5185 Int) (v_ArrVal_5186 Int) (v_ArrVal_5184 (Array Int Int))) (let ((.cse11 (let ((.cse14 (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_47| (let ((.cse15 (store (store (select |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_47|) 0 v_ArrVal_5185) 4 0))) (store .cse15 0 (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_47| .cse15) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|)))))) (store .cse14 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse14 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| 0)))) (.cse12 (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_47| (let ((.cse13 (store (store (select |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_47|) 0 v_ArrVal_5186) 4 0))) (store .cse13 0 (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_47| .cse13) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|)))) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_5184))) (let ((.cse8 (select .cse12 (select (select .cse12 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (.cse9 (select (select .cse11 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) (.cse10 (select (select .cse12 |c_ULTIMATE.start_main_~#p2~0#1.base|) |c_ULTIMATE.start_main_~#p2~0#1.offset|))) (or (not (= (select .cse8 (+ .cse9 4)) 0)) (not (= .cse10 (select .cse8 .cse9))) (= (select (select .cse11 .cse10) (+ 4 (select (select .cse11 |c_ULTIMATE.start_main_~#p2~0#1.base|) |c_ULTIMATE.start_main_~#p2~0#1.offset|))) 0)))))))) is different from false [2022-11-20 12:29:55,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916170605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:55,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:29:55,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33] total 52 [2022-11-20 12:29:55,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884207269] [2022-11-20 12:29:55,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:29:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-20 12:29:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:55,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-20 12:29:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2910, Unknown=9, NotChecked=452, Total=3660 [2022-11-20 12:29:55,563 INFO L87 Difference]: Start difference. First operand 324 states and 398 transitions. Second operand has 52 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 47 states have internal predecessors, (98), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:30:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:05,322 INFO L93 Difference]: Finished difference Result 430 states and 531 transitions. [2022-11-20 12:30:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:30:05,323 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 47 states have internal predecessors, (98), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Word has length 62 [2022-11-20 12:30:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:05,325 INFO L225 Difference]: With dead ends: 430 [2022-11-20 12:30:05,325 INFO L226 Difference]: Without dead ends: 427 [2022-11-20 12:30:05,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 64.5s TimeCoverageRelationStatistics Valid=405, Invalid=4024, Unknown=9, NotChecked=532, Total=4970 [2022-11-20 12:30:05,327 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 87 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1018 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:05,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1070 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1200 Invalid, 0 Unknown, 1018 Unchecked, 2.5s Time] [2022-11-20 12:30:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-20 12:30:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 367. [2022-11-20 12:30:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 290 states have (on average 1.2) internal successors, (348), 314 states have internal predecessors, (348), 61 states have call successors, (61), 16 states have call predecessors, (61), 15 states have return successors, (58), 36 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-20 12:30:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 467 transitions. [2022-11-20 12:30:05,452 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 467 transitions. Word has length 62 [2022-11-20 12:30:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:05,453 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 467 transitions. [2022-11-20 12:30:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 47 states have internal predecessors, (98), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:30:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 467 transitions. [2022-11-20 12:30:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 12:30:05,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:05,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:05,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:30:05,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:05,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1802853032, now seen corresponding path program 1 times [2022-11-20 12:30:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894632854] [2022-11-20 12:30:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:30:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:30:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:30:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:30:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:05,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894632854] [2022-11-20 12:30:05,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894632854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:05,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168650314] [2022-11-20 12:30:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:05,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:05,981 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:05,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:30:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:30:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:06,569 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 17 [2022-11-20 12:30:06,573 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 13 [2022-11-20 12:30:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:30:06,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:30:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:30:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168650314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:30:07,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:30:07,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 12 [2022-11-20 12:30:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847426796] [2022-11-20 12:30:07,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:30:07,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:30:07,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:30:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:30:07,034 INFO L87 Difference]: Start difference. First operand 367 states and 467 transitions. Second operand has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:30:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:07,864 INFO L93 Difference]: Finished difference Result 394 states and 501 transitions. [2022-11-20 12:30:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:30:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 63 [2022-11-20 12:30:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:07,867 INFO L225 Difference]: With dead ends: 394 [2022-11-20 12:30:07,868 INFO L226 Difference]: Without dead ends: 391 [2022-11-20 12:30:07,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:30:07,869 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 103 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:07,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 347 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 292 Invalid, 0 Unknown, 125 Unchecked, 0.5s Time] [2022-11-20 12:30:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-20 12:30:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2022-11-20 12:30:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.1986531986531987) internal successors, (356), 321 states have internal predecessors, (356), 62 states have call successors, (62), 17 states have call predecessors, (62), 15 states have return successors, (59), 36 states have call predecessors, (59), 54 states have call successors, (59) [2022-11-20 12:30:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 477 transitions. [2022-11-20 12:30:07,979 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 477 transitions. Word has length 63 [2022-11-20 12:30:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:07,979 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 477 transitions. [2022-11-20 12:30:07,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:30:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 477 transitions. [2022-11-20 12:30:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 12:30:07,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:07,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:07,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:30:08,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:08,189 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1473312201, now seen corresponding path program 2 times [2022-11-20 12:30:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:08,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613561224] [2022-11-20 12:30:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:30:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:30:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:30:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:30:21,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:21,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613561224] [2022-11-20 12:30:21,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613561224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:21,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84479457] [2022-11-20 12:30:21,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:30:21,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:21,034 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:21,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:30:21,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:30:21,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:30:21,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 229 conjunts are in the unsatisfiable core [2022-11-20 12:30:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:21,575 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:30:21,575 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 23 treesize of output 19 [2022-11-20 12:30:21,877 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:30:21,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:30:21,935 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:30:21,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:30:21,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:30:21,958 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 12 treesize of output 11 [2022-11-20 12:30:21,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:30:21,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:30:22,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:22,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-20 12:30:22,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:30:22,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-11-20 12:30:22,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:30:22,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:30:22,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 12:30:22,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 12:30:22,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:30:22,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-20 12:30:22,935 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 [2022-11-20 12:30:23,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-20 12:30:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-20 12:30:23,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:30:23,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:30:23,756 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 16 treesize of output 15 [2022-11-20 12:30:23,770 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 16 treesize of output 15 [2022-11-20 12:30:24,238 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 12:30:24,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 26 [2022-11-20 12:30:24,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:24,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:24,249 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 12:30:24,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:30:24,848 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5893 (Array Int Int)) (v_ArrVal_5894 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5902 (Array Int Int)) (|chain_node_~node~0#1.offset| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_5893 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5893) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5902) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_5894 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5894) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.offset|)))) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:30:24,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:24,991 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-20 12:30:24,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 66 [2022-11-20 12:30:25,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2022-11-20 12:30:25,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2022-11-20 12:30:25,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 12:30:25,067 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 16 treesize of output 15 [2022-11-20 12:30:25,108 INFO L321 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2022-11-20 12:30:25,109 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 37 treesize of output 53 [2022-11-20 12:30:25,150 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 16 treesize of output 15 [2022-11-20 12:30:25,714 INFO L321 Elim1Store]: treesize reduction 116, result has 14.1 percent of original size [2022-11-20 12:30:25,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 145 treesize of output 91 [2022-11-20 12:30:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:25,754 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-20 12:30:25,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 136 treesize of output 122 [2022-11-20 12:30:26,128 INFO L321 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2022-11-20 12:30:26,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 141 treesize of output 55 [2022-11-20 12:30:26,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2022-11-20 12:30:26,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:30:26,643 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5917 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5912 (Array Int Int)) (v_ArrVal_5913 (Array Int Int)) (v_ArrVal_5916 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5917) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5912) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5916) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5913)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-20 12:30:26,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,754 INFO L321 Elim1Store]: treesize reduction 70, result has 6.7 percent of original size [2022-11-20 12:30:26,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 182 treesize of output 176 [2022-11-20 12:30:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:26,832 INFO L321 Elim1Store]: treesize reduction 116, result has 8.7 percent of original size [2022-11-20 12:30:26,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 206 treesize of output 173 [2022-11-20 12:30:26,845 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 169 treesize of output 141 [2022-11-20 12:30:26,912 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-11-20 12:30:26,913 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 32 treesize of output 34 [2022-11-20 12:30:26,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2022-11-20 12:30:30,132 INFO L321 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2022-11-20 12:30:30,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 229 treesize of output 101 [2022-11-20 12:30:30,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,170 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:30:30,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 28 [2022-11-20 12:30:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-11-20 12:30:30,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:30:32,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84479457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:32,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:30:32,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 52 [2022-11-20 12:30:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609021711] [2022-11-20 12:30:32,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:30:32,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-20 12:30:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-20 12:30:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3019, Unknown=2, NotChecked=222, Total=3422 [2022-11-20 12:30:32,157 INFO L87 Difference]: Start difference. First operand 375 states and 477 transitions. Second operand has 52 states, 44 states have (on average 2.272727272727273) internal successors, (100), 47 states have internal predecessors, (100), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:30:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:39,099 INFO L93 Difference]: Finished difference Result 474 states and 600 transitions. [2022-11-20 12:30:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:30:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 44 states have (on average 2.272727272727273) internal successors, (100), 47 states have internal predecessors, (100), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 63 [2022-11-20 12:30:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:39,102 INFO L225 Difference]: With dead ends: 474 [2022-11-20 12:30:39,102 INFO L226 Difference]: Without dead ends: 397 [2022-11-20 12:30:39,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=277, Invalid=4285, Unknown=2, NotChecked=266, Total=4830 [2022-11-20 12:30:39,106 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:39,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1494 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1693 Invalid, 0 Unknown, 614 Unchecked, 3.8s Time] [2022-11-20 12:30:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-20 12:30:39,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 375. [2022-11-20 12:30:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.1952861952861953) internal successors, (355), 321 states have internal predecessors, (355), 62 states have call successors, (62), 17 states have call predecessors, (62), 15 states have return successors, (59), 36 states have call predecessors, (59), 54 states have call successors, (59) [2022-11-20 12:30:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 476 transitions. [2022-11-20 12:30:39,245 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 476 transitions. Word has length 63 [2022-11-20 12:30:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:39,246 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 476 transitions. [2022-11-20 12:30:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 44 states have (on average 2.272727272727273) internal successors, (100), 47 states have internal predecessors, (100), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:30:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 476 transitions. [2022-11-20 12:30:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:30:39,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:39,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:39,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:30:39,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:30:39,458 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash 17440653, now seen corresponding path program 1 times [2022-11-20 12:30:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:39,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770522249] [2022-11-20 12:30:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:30:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:30:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:30:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:30:41,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770522249] [2022-11-20 12:30:41,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770522249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:41,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154797386] [2022-11-20 12:30:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:41,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:41,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:41,379 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:41,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:30:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:41,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-20 12:30:41,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:42,145 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:30:42,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:30:42,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:30:42,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:30:42,208 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-11-20 12:30:42,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 26 [2022-11-20 12:30:42,211 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 21 treesize of output 15 [2022-11-20 12:30:45,090 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 12:30:45,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 40 [2022-11-20 12:30:45,500 INFO L321 Elim1Store]: treesize reduction 273, result has 30.5 percent of original size [2022-11-20 12:30:45,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 35 case distinctions, treesize of input 175 treesize of output 251 [2022-11-20 12:30:45,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:30:45,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:30:46,582 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:46,583 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 20 treesize of output 30 [2022-11-20 12:30:46,637 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:46,637 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 21 treesize of output 31 [2022-11-20 12:30:46,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:30:46,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:30:47,068 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:47,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-20 12:30:47,251 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:47,252 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 20 treesize of output 30 [2022-11-20 12:30:47,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:30:47,319 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:47,319 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 21 treesize of output 31 [2022-11-20 12:30:47,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:30:48,685 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:30:48,685 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 17 treesize of output 19 [2022-11-20 12:30:48,699 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 12 treesize of output 11 [2022-11-20 12:30:48,760 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:48,761 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 21 treesize of output 31 [2022-11-20 12:30:48,874 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:48,875 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 21 treesize of output 31 [2022-11-20 12:30:48,946 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 12:30:48,946 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 3 case distinctions, treesize of input 25 treesize of output 32 [2022-11-20 12:30:48,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:30:49,018 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:49,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-20 12:30:49,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:30:49,054 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 14 treesize of output 13 [2022-11-20 12:30:49,182 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:30:49,183 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 22 treesize of output 22 [2022-11-20 12:30:49,221 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-20 12:30:49,221 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 18 treesize of output 26 [2022-11-20 12:30:49,283 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 12:30:49,284 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 3 case distinctions, treesize of input 30 treesize of output 35 [2022-11-20 12:30:49,405 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-20 12:30:49,405 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 3 case distinctions, treesize of input 26 treesize of output 55 [2022-11-20 12:30:49,591 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-20 12:30:49,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 55 [2022-11-20 12:30:49,727 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-20 12:30:49,728 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 18 treesize of output 26 [2022-11-20 12:30:49,797 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:49,797 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 20 treesize of output 30 [2022-11-20 12:30:49,871 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:49,871 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 24 treesize of output 24 [2022-11-20 12:30:49,907 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:49,908 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 20 treesize of output 30 [2022-11-20 12:30:50,043 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:30:50,044 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 17 treesize of output 19 [2022-11-20 12:30:50,058 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 12 treesize of output 11 [2022-11-20 12:30:50,114 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:50,114 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 21 treesize of output 31 [2022-11-20 12:30:50,221 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:50,221 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 21 treesize of output 31 [2022-11-20 12:30:50,294 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 12:30:50,294 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 3 case distinctions, treesize of input 25 treesize of output 32 [2022-11-20 12:30:50,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:30:50,361 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:50,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-20 12:30:50,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 12:30:50,393 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 14 treesize of output 13 [2022-11-20 12:30:50,510 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:30:50,511 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 17 treesize of output 19 [2022-11-20 12:30:50,543 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:50,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 12:30:50,587 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:50,587 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 19 treesize of output 23 [2022-11-20 12:30:50,677 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-20 12:30:50,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 48 [2022-11-20 12:30:50,769 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-20 12:30:50,769 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 3 case distinctions, treesize of input 27 treesize of output 48 [2022-11-20 12:30:50,927 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 12:30:50,927 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 3 case distinctions, treesize of input 25 treesize of output 32 [2022-11-20 12:30:50,983 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:30:50,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-20 12:30:51,030 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:51,031 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 21 treesize of output 31 [2022-11-20 12:30:51,108 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-20 12:30:51,108 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 21 treesize of output 31 [2022-11-20 12:33:44,487 WARN L233 SmtUtils]: Spent 2.59m on a formula simplification. DAG size of input: 366 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:33:44,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:33:44,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 106 [2022-11-20 12:33:44,732 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 84 treesize of output 72 [2022-11-20 12:33:44,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-20 12:33:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 3 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:33:45,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:49,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154797386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:49,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:33:49,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 38 [2022-11-20 12:33:49,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433996156] [2022-11-20 12:33:49,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 12:33:49,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:49,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 12:33:49,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1467, Unknown=67, NotChecked=0, Total=1640 [2022-11-20 12:33:49,978 INFO L87 Difference]: Start difference. First operand 375 states and 476 transitions. Second operand has 38 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 36 states have internal predecessors, (97), 7 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-20 12:34:06,262 WARN L233 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 81 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:34:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:08,487 INFO L93 Difference]: Finished difference Result 455 states and 575 transitions. [2022-11-20 12:34:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 12:34:08,488 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 36 states have internal predecessors, (97), 7 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 65 [2022-11-20 12:34:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:08,491 INFO L225 Difference]: With dead ends: 455 [2022-11-20 12:34:08,491 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 12:34:08,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 196.9s TimeCoverageRelationStatistics Valid=249, Invalid=3443, Unknown=90, NotChecked=0, Total=3782 [2022-11-20 12:34:08,493 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 153 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 663 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1353 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1341 Invalid, 0 Unknown, 663 Unchecked, 2.0s Time] [2022-11-20 12:34:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 12:34:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 382. [2022-11-20 12:34:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 303 states have (on average 1.2013201320132014) internal successors, (364), 327 states have internal predecessors, (364), 60 states have call successors, (60), 16 states have call predecessors, (60), 18 states have return successors, (63), 38 states have call predecessors, (63), 52 states have call successors, (63) [2022-11-20 12:34:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 487 transitions. [2022-11-20 12:34:08,671 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 487 transitions. Word has length 65 [2022-11-20 12:34:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:08,671 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 487 transitions. [2022-11-20 12:34:08,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 36 states have internal predecessors, (97), 7 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-20 12:34:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 487 transitions. [2022-11-20 12:34:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:34:08,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:08,673 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:08,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 12:34:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:34:08,881 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1662798770, now seen corresponding path program 1 times [2022-11-20 12:34:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:08,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758532436] [2022-11-20 12:34:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:08,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:34:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:34:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:34:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:34:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:34:09,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758532436] [2022-11-20 12:34:09,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758532436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:09,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079103515] [2022-11-20 12:34:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:09,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:09,151 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:09,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:34:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:34:09,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:09,783 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 25 treesize of output 17 [2022-11-20 12:34:09,787 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 13 [2022-11-20 12:34:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:34:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:34:10,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079103515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:10,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:10,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 12 [2022-11-20 12:34:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113223654] [2022-11-20 12:34:10,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:10,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:34:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:34:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:34:10,267 INFO L87 Difference]: Start difference. First operand 382 states and 487 transitions. Second operand has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:34:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:11,184 INFO L93 Difference]: Finished difference Result 411 states and 523 transitions. [2022-11-20 12:34:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:34:11,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 65 [2022-11-20 12:34:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:11,187 INFO L225 Difference]: With dead ends: 411 [2022-11-20 12:34:11,187 INFO L226 Difference]: Without dead ends: 408 [2022-11-20 12:34:11,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:34:11,189 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:11,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 327 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 414 Invalid, 0 Unknown, 73 Unchecked, 0.6s Time] [2022-11-20 12:34:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-20 12:34:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 392. [2022-11-20 12:34:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 312 states have (on average 1.1987179487179487) internal successors, (374), 336 states have internal predecessors, (374), 61 states have call successors, (61), 17 states have call predecessors, (61), 18 states have return successors, (64), 38 states have call predecessors, (64), 53 states have call successors, (64) [2022-11-20 12:34:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 499 transitions. [2022-11-20 12:34:11,359 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 499 transitions. Word has length 65 [2022-11-20 12:34:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:11,359 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 499 transitions. [2022-11-20 12:34:11,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:34:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 499 transitions. [2022-11-20 12:34:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:34:11,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:11,362 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:11,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 12:34:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:34:11,570 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1114148957, now seen corresponding path program 2 times [2022-11-20 12:34:11,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:11,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743754997] [2022-11-20 12:34:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:34:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:34:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:34:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:34:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:34:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 12:34:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 45 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:34:14,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:14,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743754997] [2022-11-20 12:34:14,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743754997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:14,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026808856] [2022-11-20 12:34:14,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:34:14,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:14,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:14,408 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:14,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:34:15,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:34:15,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:34:15,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-20 12:34:15,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:15,040 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 14 treesize of output 12 [2022-11-20 12:34:15,304 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:34:15,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:34:15,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:34:15,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:34:15,386 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-20 12:34:15,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-11-20 12:34:15,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-20 12:34:15,610 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 24 treesize of output 19 [2022-11-20 12:34:15,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-20 12:34:15,961 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7112 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (v_ArrVal_7107 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int) (|chain_node_~node~0#1.offset| Int)) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_7107))) (store .cse0 |chain_node_~node~0#1.base| (store (select .cse0 |chain_node_~node~0#1.base|) |chain_node_~node~0#1.offset| (select (select .cse0 |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|)))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_7112)) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|))) is different from true [2022-11-20 12:34:16,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:16,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:16,434 INFO L321 Elim1Store]: treesize reduction 152, result has 42.6 percent of original size [2022-11-20 12:34:16,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 126 treesize of output 406 [2022-11-20 12:34:16,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 21 treesize of output 33 [2022-11-20 12:34:17,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:17,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:17,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:17,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:17,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:17,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 147 [2022-11-20 12:34:17,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:17,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:17,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:17,330 INFO L321 Elim1Store]: treesize reduction 48, result has 26.2 percent of original size [2022-11-20 12:34:17,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 177 treesize of output 170 [2022-11-20 12:34:17,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:34:17,575 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 522 treesize of output 518 [2022-11-20 12:34:19,751 INFO L321 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-11-20 12:34:19,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 135 [2022-11-20 12:34:19,841 INFO L321 Elim1Store]: treesize reduction 39, result has 42.6 percent of original size [2022-11-20 12:34:19,841 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 32 treesize of output 59 [2022-11-20 12:34:19,879 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:34:19,945 INFO L321 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-11-20 12:34:19,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 135 [2022-11-20 12:34:20,176 INFO L321 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-11-20 12:34:20,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 128 [2022-11-20 12:34:20,372 INFO L321 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-11-20 12:34:20,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 128 [2022-11-20 12:34:20,432 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:34:20,444 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:34:21,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:21,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:21,268 INFO L321 Elim1Store]: treesize reduction 28, result has 36.4 percent of original size [2022-11-20 12:34:21,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 503 treesize of output 485 [2022-11-20 12:34:21,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:34:21,302 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 420 treesize of output 425 [2022-11-20 12:34:21,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:21,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:21,883 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 71 treesize of output 5 [2022-11-20 12:34:22,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:34:22,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2022-11-20 12:34:22,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:34:22,157 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 72 treesize of output 74 [2022-11-20 12:34:22,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:22,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:22,398 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-20 12:34:22,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 267 treesize of output 222 [2022-11-20 12:34:22,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:22,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:22,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:22,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:22,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 47 [2022-11-20 12:34:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:22,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:22,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:22,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:22,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 47 [2022-11-20 12:34:22,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:22,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:22,791 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:34:24,072 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 8 treesize of output 4 [2022-11-20 12:34:24,207 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7114 (Array Int Int)) (v_ArrVal_7115 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_7115) |c_chain_node_#in~ppnode#1.base| v_ArrVal_7114)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-20 12:34:24,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:24,255 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:34:24,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 26 [2022-11-20 12:34:24,298 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 8 treesize of output 4 [2022-11-20 12:34:24,443 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7107 (Array Int Int)) (v_ArrVal_7118 (Array Int Int)) (v_ArrVal_7117 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_7107) |chain_node_~node~0#1.base| v_ArrVal_7117) |c_chain_node_#in~ppnode#1.base| v_ArrVal_7118)))) is different from true [2022-11-20 12:34:24,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:24,528 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:34:24,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 38 [2022-11-20 12:34:24,589 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 8 treesize of output 4 [2022-11-20 12:34:24,746 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7107 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_7121 (Array Int Int)) (v_ArrVal_7120 (Array Int Int))) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_7107) |chain_node_~node~0#1.base| v_ArrVal_7120) |c_chain_node_#in~ppnode#1.base| v_ArrVal_7121)))) is different from true [2022-11-20 12:34:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:34:24,841 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:34:24,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 38 [2022-11-20 12:34:24,994 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 [2022-11-20 12:34:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 34 proven. 23 refuted. 0 times theorem prover too weak. 31 trivial. 20 not checked. [2022-11-20 12:34:25,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:25,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026808856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:25,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:34:25,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 33 [2022-11-20 12:34:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856346900] [2022-11-20 12:34:25,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:25,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 12:34:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 12:34:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=774, Unknown=8, NotChecked=236, Total=1122 [2022-11-20 12:34:25,314 INFO L87 Difference]: Start difference. First operand 392 states and 499 transitions. Second operand has 33 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 9 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 12:34:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:28,218 INFO L93 Difference]: Finished difference Result 421 states and 532 transitions. [2022-11-20 12:34:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:34:28,218 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 9 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 67 [2022-11-20 12:34:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:28,220 INFO L225 Difference]: With dead ends: 421 [2022-11-20 12:34:28,220 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 12:34:28,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=177, Invalid=1310, Unknown=11, NotChecked=308, Total=1806 [2022-11-20 12:34:28,222 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 160 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 567 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:28,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 529 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1118 Invalid, 0 Unknown, 567 Unchecked, 1.8s Time] [2022-11-20 12:34:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 12:34:28,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 392. [2022-11-20 12:34:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 312 states have (on average 1.1923076923076923) internal successors, (372), 336 states have internal predecessors, (372), 61 states have call successors, (61), 17 states have call predecessors, (61), 18 states have return successors, (64), 38 states have call predecessors, (64), 53 states have call successors, (64) [2022-11-20 12:34:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 497 transitions. [2022-11-20 12:34:28,382 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 497 transitions. Word has length 67 [2022-11-20 12:34:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:28,382 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 497 transitions. [2022-11-20 12:34:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 9 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 12:34:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 497 transitions. [2022-11-20 12:34:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:34:28,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:28,384 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:28,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:28,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:28,593 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2071904462, now seen corresponding path program 2 times [2022-11-20 12:34:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:28,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823159181] [2022-11-20 12:34:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:34:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:34:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:34:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:34:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:34:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823159181] [2022-11-20 12:34:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823159181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303894253] [2022-11-20 12:34:30,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:34:30,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:30,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:30,079 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:30,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c0f16d-1491-4cd2-a14c-8f7dd9877939/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:34:30,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:34:30,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:34:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-20 12:34:30,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:31,051 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:34:31,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:34:31,107 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2022-11-20 12:34:31,107 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 54 treesize of output 56 [2022-11-20 12:34:31,161 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-20 12:34:31,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 73 [2022-11-20 12:34:31,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:34:31,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:34:31,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:34:31,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2022-11-20 12:34:31,268 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 14 treesize of output 13 [2022-11-20 12:34:31,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:34:31,315 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 47 treesize of output 5 [2022-11-20 12:34:31,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:34:31,367 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-20 12:34:31,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:34:31,400 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 27 treesize of output 19 [2022-11-20 12:34:33,087 INFO L321 Elim1Store]: treesize reduction 94, result has 40.5 percent of original size [2022-11-20 12:34:33,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 126 [2022-11-20 12:34:33,214 INFO L321 Elim1Store]: treesize reduction 36, result has 56.6 percent of original size [2022-11-20 12:34:33,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 99 [2022-11-20 12:34:33,930 INFO L321 Elim1Store]: treesize reduction 36, result has 56.6 percent of original size [2022-11-20 12:34:33,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 115 [2022-11-20 12:34:34,306 INFO L321 Elim1Store]: treesize reduction 126, result has 51.0 percent of original size [2022-11-20 12:34:34,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 189