./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/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_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2o.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/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_76ed50a3-42f3-4d44-9e32-ca404974919b/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 c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d --- 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 11:40:06,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:40:06,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:40:06,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:40:06,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:40:06,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:40:06,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:40:06,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:40:06,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:40:06,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:40:06,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:40:06,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:40:06,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:40:06,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:40:06,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:40:06,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:40:06,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:40:06,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:40:06,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:40:06,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:40:06,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:40:06,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:40:06,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:40:06,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:40:06,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:40:06,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:40:06,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:40:06,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:40:06,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:40:06,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:40:06,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:40:06,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:40:06,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:40:06,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:40:06,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:40:06,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:40:06,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:40:06,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:40:06,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:40:06,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:40:06,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:40:06,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:40:06,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:40:06,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:40:06,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:40:06,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:40:06,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:40:06,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:40:06,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:40:06,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:40:06,748 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:40:06,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:40:06,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:40:06,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:40:06,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:40:06,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:40:06,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:40:06,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:40:06,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:40:06,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:40:06,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:40:06,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:40:06,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:40:06,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:40:06,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:40:06,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:40:06,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:40:06,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:40:06,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:40:06,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:40:06,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:40:06,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:40:06,753 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:40:06,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:40:06,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:40:06,754 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_76ed50a3-42f3-4d44-9e32-ca404974919b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d [2022-11-20 11:40:07,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:40:07,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:40:07,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:40:07,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:40:07,052 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:40:07,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/res2o.c [2022-11-20 11:40:10,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:40:10,482 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:40:10,483 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/sv-benchmarks/c/array-fpi/res2o.c [2022-11-20 11:40:10,489 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/data/564e3d356/f4637cafb2894ac1a853e4bb2cd14f56/FLAG78bbafd0d [2022-11-20 11:40:10,504 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/data/564e3d356/f4637cafb2894ac1a853e4bb2cd14f56 [2022-11-20 11:40:10,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:40:10,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:40:10,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:40:10,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:40:10,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:40:10,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b784ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10, skipping insertion in model container [2022-11-20 11:40:10,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:40:10,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:40:10,754 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_76ed50a3-42f3-4d44-9e32-ca404974919b/sv-benchmarks/c/array-fpi/res2o.c[588,601] [2022-11-20 11:40:10,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:40:10,816 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:40:10,835 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_76ed50a3-42f3-4d44-9e32-ca404974919b/sv-benchmarks/c/array-fpi/res2o.c[588,601] [2022-11-20 11:40:10,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:40:10,875 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:40:10,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10 WrapperNode [2022-11-20 11:40:10,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:40:10,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:40:10,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:40:10,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:40:10,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,939 INFO L138 Inliner]: procedures = 17, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 121 [2022-11-20 11:40:10,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:40:10,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:40:10,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:40:10,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:40:10,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:10,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:40:10,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:40:10,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:40:10,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:40:10,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (1/1) ... [2022-11-20 11:40:11,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:40:11,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:11,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:40:11,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:40:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:40:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:40:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:40:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:40:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:40:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:40:11,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:40:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:40:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:40:11,210 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:40:11,212 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:40:11,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:40:11,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:40:11,535 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:40:11,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:11 BoogieIcfgContainer [2022-11-20 11:40:11,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:40:11,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:40:11,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:40:11,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:40:11,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:40:10" (1/3) ... [2022-11-20 11:40:11,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccb95d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:11, skipping insertion in model container [2022-11-20 11:40:11,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:10" (2/3) ... [2022-11-20 11:40:11,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccb95d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:11, skipping insertion in model container [2022-11-20 11:40:11,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:11" (3/3) ... [2022-11-20 11:40:11,547 INFO L112 eAbstractionObserver]: Analyzing ICFG res2o.c [2022-11-20 11:40:11,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:40:11,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:40:11,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:40:11,629 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;@7dcb6b87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:40:11,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:40:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:40:11,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:11,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:11,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2022-11-20 11:40:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:11,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174019840] [2022-11-20 11:40:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:11,849 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 11:40:11,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174019840] [2022-11-20 11:40:11,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174019840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:11,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:11,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:40:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070822657] [2022-11-20 11:40:11,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:40:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:40:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:40:11,886 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:11,907 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-11-20 11:40:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:40:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:40:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:11,918 INFO L225 Difference]: With dead ends: 56 [2022-11-20 11:40:11,918 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 11:40:11,921 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 11:40:11,925 INFO L413 NwaCegarLoop]: 36 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, 36 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 11:40:11,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:40:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 11:40:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 11:40:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-20 11:40:11,962 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-11-20 11:40:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:11,963 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-20 11:40:11,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-20 11:40:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:40:11,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:11,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:40:11,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2022-11-20 11:40:11,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:11,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198312717] [2022-11-20 11:40:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:11,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:12,200 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 11:40:12,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:12,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198312717] [2022-11-20 11:40:12,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198312717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:12,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:12,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:40:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933081581] [2022-11-20 11:40:12,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:40:12,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:40:12,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:40:12,206 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:12,328 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-11-20 11:40:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:40:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:40:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:12,331 INFO L225 Difference]: With dead ends: 57 [2022-11-20 11:40:12,331 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:40:12,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:40:12,335 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:12,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 14 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:40:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:40:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-20 11:40:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-20 11:40:12,349 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-11-20 11:40:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:12,349 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-20 11:40:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-20 11:40:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 11:40:12,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:12,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:12,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:40:12,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2022-11-20 11:40:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:12,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83903764] [2022-11-20 11:40:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:16,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83903764] [2022-11-20 11:40:16,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83903764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701155225] [2022-11-20 11:40:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:16,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:16,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:16,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:16,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:40:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:16,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 11:40:16,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:16,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:16,481 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 11:40:16,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 39 [2022-11-20 11:40:16,545 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 11 treesize of output 7 [2022-11-20 11:40:16,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:40:17,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:17,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-20 11:40:17,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:17,477 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 33 treesize of output 38 [2022-11-20 11:40:17,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:17,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2022-11-20 11:40:18,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:18,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2022-11-20 11:40:18,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:18,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2022-11-20 11:40:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:19,361 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 51 treesize of output 19 [2022-11-20 11:40:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:19,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:28,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:28,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:28,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:28,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:28,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:28,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:30,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701155225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:30,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:40:30,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-11-20 11:40:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737620346] [2022-11-20 11:40:30,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:30,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 11:40:30,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 11:40:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1591, Unknown=3, NotChecked=0, Total=1892 [2022-11-20 11:40:30,669 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:34,956 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-20 11:40:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:40:34,958 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 11:40:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:34,960 INFO L225 Difference]: With dead ends: 71 [2022-11-20 11:40:34,961 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 11:40:34,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=761, Invalid=3526, Unknown=3, NotChecked=0, Total=4290 [2022-11-20 11:40:34,964 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 171 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:34,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 108 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 165 Invalid, 0 Unknown, 303 Unchecked, 0.4s Time] [2022-11-20 11:40:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 11:40:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 41. [2022-11-20 11:40:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-20 11:40:34,978 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 31 [2022-11-20 11:40:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:34,979 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-20 11:40:34,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-20 11:40:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:40:34,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:34,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:34,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:35,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2022-11-20 11:40:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:35,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605970172] [2022-11-20 11:40:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:40:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:35,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605970172] [2022-11-20 11:40:35,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605970172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:35,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946765945] [2022-11-20 11:40:35,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:40:35,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:35,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:40:35,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:40:35,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:40:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:40:35,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:40:35,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:40:35,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946765945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:35,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:40:35,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 11:40:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386524066] [2022-11-20 11:40:35,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:35,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:40:35,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:40:35,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:40:35,595 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:35,964 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2022-11-20 11:40:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:40:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-20 11:40:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:35,965 INFO L225 Difference]: With dead ends: 116 [2022-11-20 11:40:35,966 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:40:35,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:40:35,967 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 88 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:35,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 34 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:40:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:40:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-11-20 11:40:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-20 11:40:35,985 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 33 [2022-11-20 11:40:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:35,986 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-20 11:40:35,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-20 11:40:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:40:35,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:35,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:35,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:36,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash -284383476, now seen corresponding path program 3 times [2022-11-20 11:40:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:36,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085275291] [2022-11-20 11:40:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:40:36,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:36,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085275291] [2022-11-20 11:40:36,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085275291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:36,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281313341] [2022-11-20 11:40:36,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:40:36,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:36,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:36,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:40:36,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:40:36,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:40:36,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:40:36,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:40:36,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:40:36,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281313341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:36,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:40:36,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 11:40:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789851816] [2022-11-20 11:40:36,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:36,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:40:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:40:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:40:36,639 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:36,923 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-11-20 11:40:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:40:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 11:40:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:36,925 INFO L225 Difference]: With dead ends: 57 [2022-11-20 11:40:36,926 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 11:40:36,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:40:36,927 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:36,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 36 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:40:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 11:40:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-11-20 11:40:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-20 11:40:36,945 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 39 [2022-11-20 11:40:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:36,945 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-20 11:40:36,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-20 11:40:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:40:36,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:36,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:36,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:37,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2022-11-20 11:40:37,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:37,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007373527] [2022-11-20 11:40:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:43,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:43,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007373527] [2022-11-20 11:40:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007373527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:43,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186401203] [2022-11-20 11:40:43,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:40:43,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:43,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:43,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:43,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:40:43,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:40:43,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:40:43,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-20 11:40:43,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:43,587 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 11:40:43,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 11:40:43,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:40:43,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:40:44,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 11:40:44,848 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 46 treesize of output 51 [2022-11-20 11:40:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:45,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 53 treesize of output 61 [2022-11-20 11:40:46,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:46,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 73 [2022-11-20 11:40:46,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:46,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:46,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2022-11-20 11:40:47,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:47,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:47,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 88 [2022-11-20 11:40:48,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:48,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-11-20 11:40:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:48,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:48,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:48,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:48,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2022-11-20 11:40:49,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:49,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:49,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 83 [2022-11-20 11:40:50,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:50,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:40:50,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:50,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 88 [2022-11-20 11:40:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:50,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 83 [2022-11-20 11:40:51,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:40:51,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 31 [2022-11-20 11:40:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:51,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:02,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:02,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:02,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:02,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:02,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:02,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:02,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:02,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:02,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186401203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:02,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:44:02,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 31] total 92 [2022-11-20 11:44:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068074835] [2022-11-20 11:44:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-11-20 11:44:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-11-20 11:44:02,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=920, Invalid=7395, Unknown=57, NotChecked=0, Total=8372 [2022-11-20 11:44:02,468 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 92 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:48,137 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:46:14,170 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse8 (* c_~N~0 3)) (.cse15 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse3 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse4 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4)) (.cse5 (+ .cse8 1)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|))) (and (forall ((v_ArrVal_346 Int) (v_ArrVal_344 Int) (v_ArrVal_342 Int) (v_ArrVal_341 Int) (v_ArrVal_351 Int) (v_ArrVal_349 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| (store .cse6 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_341)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_341 1)) (not (<= v_ArrVal_344 (+ v_ArrVal_342 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_342)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_346 (+ v_ArrVal_344 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_344)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_349 (+ v_ArrVal_346 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_346)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_351 (+ v_ArrVal_349 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (not (<= v_ArrVal_342 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (< (+ v_ArrVal_351 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse4)) .cse5))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= (+ .cse7 4) .cse8) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse6 0) 1) (or (< 2 c_~N~0) (forall ((v_ArrVal_346 Int) (v_ArrVal_334 Int) (v_ArrVal_344 Int) (v_ArrVal_342 Int) (v_ArrVal_341 Int) (v_ArrVal_351 Int) (v_ArrVal_339 Int) (v_ArrVal_349 Int) (v_ArrVal_337 Int)) (let ((.cse9 (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse12 |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_334) .cse3 v_ArrVal_337)))) (store .cse11 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (select .cse11 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_339) .cse4 v_ArrVal_341))))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_351 (+ v_ArrVal_349 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (not (<= v_ArrVal_349 (+ v_ArrVal_346 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_346)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_341 1)) (not (<= v_ArrVal_346 (+ v_ArrVal_344 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_344)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_344 (+ v_ArrVal_342 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_342)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_334 1)) (not (<= v_ArrVal_339 1)) (not (<= v_ArrVal_342 (+ (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse9 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_337 1)) (< (+ v_ArrVal_351 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse4)) .cse5))))) (not (< 1 c_~N~0))) (= (select .cse12 4) 1) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (forall ((v_ArrVal_346 Int) (v_ArrVal_344 Int) (v_ArrVal_342 Int) (v_ArrVal_341 Int) (v_ArrVal_351 Int) (v_ArrVal_339 Int) (v_ArrVal_349 Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| (store (store .cse6 |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_339) .cse4 v_ArrVal_341)))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_349 (+ v_ArrVal_346 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_346)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_351 (+ v_ArrVal_349 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (not (<= v_ArrVal_344 (+ v_ArrVal_342 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_342)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_342 (+ (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse13 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_341 1)) (not (<= v_ArrVal_346 (+ v_ArrVal_344 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_344)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_339 1)) (< (+ v_ArrVal_351 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse4)) .cse5))))) (= (select .cse12 0) 1) (forall ((v_ArrVal_346 Int) (v_ArrVal_344 Int) (v_ArrVal_342 Int) (v_ArrVal_351 Int) (v_ArrVal_349 Int)) (or (not (<= v_ArrVal_349 (+ v_ArrVal_346 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_346)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_342 (+ .cse7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_344 (+ v_ArrVal_342 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_342)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_346 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_344)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_344))) (not (<= v_ArrVal_351 (+ v_ArrVal_349 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (< (+ v_ArrVal_351 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse4)) .cse5))) (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) (= (select .cse6 4) 1)))) is different from true [2022-11-20 11:48:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:45,592 INFO L93 Difference]: Finished difference Result 146 states and 171 transitions. [2022-11-20 11:48:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-20 11:48:45,595 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-20 11:48:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:45,596 INFO L225 Difference]: With dead ends: 146 [2022-11-20 11:48:45,597 INFO L226 Difference]: Without dead ends: 140 [2022-11-20 11:48:45,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 475.9s TimeCoverageRelationStatistics Valid=2162, Invalid=17445, Unknown=137, NotChecked=278, Total=20022 [2022-11-20 11:48:45,602 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 157 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1610 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:45,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 203 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 294 Invalid, 0 Unknown, 1610 Unchecked, 0.5s Time] [2022-11-20 11:48:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-20 11:48:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 87. [2022-11-20 11:48:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-11-20 11:48:45,634 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 43 [2022-11-20 11:48:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:45,635 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-11-20 11:48:45,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-11-20 11:48:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:48:45,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:45,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:45,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:48:45,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash -313453870, now seen corresponding path program 5 times [2022-11-20 11:48:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:45,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269817978] [2022-11-20 11:48:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:48:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:46,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269817978] [2022-11-20 11:48:46,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269817978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:46,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561225915] [2022-11-20 11:48:46,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:48:46,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:46,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:46,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:46,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:48:46,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 11:48:46,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:46,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:48:46,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:48:46,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:48:46,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561225915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:46,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:46,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-20 11:48:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226896873] [2022-11-20 11:48:46,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:46,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:48:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:48:46,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:48:46,615 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:47,682 INFO L93 Difference]: Finished difference Result 155 states and 181 transitions. [2022-11-20 11:48:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:48:47,683 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-20 11:48:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:47,684 INFO L225 Difference]: With dead ends: 155 [2022-11-20 11:48:47,684 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:48:47,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:48:47,686 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 179 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:47,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 59 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:48:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:48:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2022-11-20 11:48:47,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-11-20 11:48:47,702 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 45 [2022-11-20 11:48:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:47,703 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-11-20 11:48:47,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-11-20 11:48:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 11:48:47,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:47,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:47,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:47,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1101638372, now seen corresponding path program 6 times [2022-11-20 11:48:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:47,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420709807] [2022-11-20 11:48:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:47,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:58,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:58,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420709807] [2022-11-20 11:48:58,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420709807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:58,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880647974] [2022-11-20 11:48:58,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:48:58,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:58,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:58,381 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:58,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ed50a3-42f3-4d44-9e32-ca404974919b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:48:58,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 11:48:58,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:58,647 WARN L261 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-20 11:48:58,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:58,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:48:58,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:58,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:58,905 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:48:58,905 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 32 treesize of output 28 [2022-11-20 11:48:59,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:59,099 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 22 [2022-11-20 11:48:59,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:59,503 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 35 treesize of output 37 [2022-11-20 11:48:59,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:59,942 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 47 treesize of output 52 [2022-11-20 11:49:00,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:00,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:00,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 44 treesize of output 52 [2022-11-20 11:49:01,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,242 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 11:49:01,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 72 [2022-11-20 11:49:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:01,889 INFO L321 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2022-11-20 11:49:01,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 87 [2022-11-20 11:49:03,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:03,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 95 [2022-11-20 11:49:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2022-11-20 11:49:04,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:04,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 115 [2022-11-20 11:49:05,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:05,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 123 [2022-11-20 11:49:06,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:06,403 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:49:06,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 134 [2022-11-20 11:49:07,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:07,236 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-20 11:49:07,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 17 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 141 [2022-11-20 11:49:08,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:08,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:08,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:08,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:08,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 15 disjoint index pairs (out of 78 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 132 [2022-11-20 11:49:09,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:09,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:09,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 134 [2022-11-20 11:49:11,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:11,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 127 [2022-11-20 11:49:13,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:13,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 128 [2022-11-20 11:49:14,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:14,349 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:49:14,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 140 [2022-11-20 11:49:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:15,605 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-20 11:49:15,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 17 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 5 case distinctions, treesize of input 161 treesize of output 146 [2022-11-20 11:49:21,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:21,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:49:21,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:49:21,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 43 [2022-11-20 11:49:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:22,122 INFO L328 TraceCheckSpWp]: Computing backward predicates...