./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array3_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ --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 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- 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-dbf71c6-m [2022-10-17 10:32:01,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:32:01,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:32:01,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:32:01,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:32:01,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:32:01,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:32:01,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:32:01,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:32:01,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:32:01,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:32:01,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:32:01,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:32:01,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:32:01,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:32:01,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:32:01,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:32:01,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:32:01,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:32:01,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:32:01,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:32:01,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:32:01,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:32:01,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:32:02,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:32:02,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:32:02,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:32:02,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:32:02,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:32:02,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:32:02,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:32:02,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:32:02,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:32:02,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:32:02,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:32:02,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:32:02,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:32:02,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:32:02,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:32:02,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:32:02,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:32:02,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:32:02,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:32:02,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:32:02,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:32:02,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:32:02,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:32:02,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:32:02,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:32:02,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:32:02,043 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:32:02,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:32:02,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:32:02,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:32:02,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:32:02,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:32:02,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:32:02,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:32:02,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:32:02,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:32:02,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:32:02,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:32:02,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:32:02,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:32:02,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:32:02,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:32:02,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:32:02,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:32:02,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:32:02,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:32:02,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:32:02,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:32:02,049 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:32:02,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:32:02,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:32:02,050 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_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2022-10-17 10:32:02,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:32:02,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:32:02,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:32:02,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:32:02,326 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:32:02,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2022-10-17 10:32:02,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/data/968437b4e/aaa6376fc40c4803b46c9387f07e1ba2/FLAGe032fb2c9 [2022-10-17 10:32:02,967 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:32:02,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/sv-benchmarks/c/array-patterns/array3_pattern.c [2022-10-17 10:32:02,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/data/968437b4e/aaa6376fc40c4803b46c9387f07e1ba2/FLAGe032fb2c9 [2022-10-17 10:32:03,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/data/968437b4e/aaa6376fc40c4803b46c9387f07e1ba2 [2022-10-17 10:32:03,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:32:03,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:32:03,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:32:03,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:32:03,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:32:03,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664f6300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03, skipping insertion in model container [2022-10-17 10:32:03,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:32:03,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:32:03,537 WARN L230 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_b382435a-eb25-4a03-b4a2-af6ac45dbffd/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-10-17 10:32:03,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:32:03,568 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:32:03,580 WARN L230 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_b382435a-eb25-4a03-b4a2-af6ac45dbffd/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-10-17 10:32:03,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:32:03,605 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:32:03,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03 WrapperNode [2022-10-17 10:32:03,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:32:03,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:32:03,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:32:03,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:32:03,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,646 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-10-17 10:32:03,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:32:03,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:32:03,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:32:03,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:32:03,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:32:03,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:32:03,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:32:03,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:32:03,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (1/1) ... [2022-10-17 10:32:03,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:32:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:03,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:32:03,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:32:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:32:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:32:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:32:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:32:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:32:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:32:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-10-17 10:32:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-10-17 10:32:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:32:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:32:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:32:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:32:03,887 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:32:03,889 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:32:04,134 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:32:04,140 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:32:04,141 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:32:04,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:32:04 BoogieIcfgContainer [2022-10-17 10:32:04,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:32:04,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:32:04,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:32:04,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:32:04,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:32:03" (1/3) ... [2022-10-17 10:32:04,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222aa688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:32:04, skipping insertion in model container [2022-10-17 10:32:04,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:03" (2/3) ... [2022-10-17 10:32:04,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222aa688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:32:04, skipping insertion in model container [2022-10-17 10:32:04,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:32:04" (3/3) ... [2022-10-17 10:32:04,151 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-10-17 10:32:04,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:32:04,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:32:04,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:32:04,223 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;@6e4b288a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:32:04,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:32:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:32:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:32:04,245 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:04,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:04,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash -87958078, now seen corresponding path program 1 times [2022-10-17 10:32:04,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:04,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383286268] [2022-10-17 10:32:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:04,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383286268] [2022-10-17 10:32:04,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383286268] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:04,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:04,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:32:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900247742] [2022-10-17 10:32:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:04,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:32:04,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:04,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:32:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:32:04,507 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:32:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:04,555 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2022-10-17 10:32:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:32:04,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 10:32:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:04,566 INFO L225 Difference]: With dead ends: 61 [2022-10-17 10:32:04,566 INFO L226 Difference]: Without dead ends: 28 [2022-10-17 10:32:04,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:32:04,577 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 [2022-10-17 10:32:04,584 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] [2022-10-17 10:32:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-17 10:32:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-17 10:32:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:32:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-17 10:32:04,634 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2022-10-17 10:32:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:04,634 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-17 10:32:04,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:32:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-17 10:32:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:32:04,639 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:04,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:32:04,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 100431803, now seen corresponding path program 1 times [2022-10-17 10:32:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:04,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569244690] [2022-10-17 10:32:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:04,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:32:04,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233505055] [2022-10-17 10:32:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:04,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:04,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:04,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:04,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:32:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:32:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:32:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:32:04,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:32:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:04,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569244690] [2022-10-17 10:32:04,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:32:04,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233505055] [2022-10-17 10:32:04,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233505055] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:04,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:04,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:32:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418919651] [2022-10-17 10:32:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:04,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:32:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:32:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:32:04,935 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:32:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:04,970 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-10-17 10:32:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:32:04,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-10-17 10:32:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:04,972 INFO L225 Difference]: With dead ends: 35 [2022-10-17 10:32:04,972 INFO L226 Difference]: Without dead ends: 31 [2022-10-17 10:32:04,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:32:04,974 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:04,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:32:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-17 10:32:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-10-17 10:32:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:32:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-10-17 10:32:04,983 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2022-10-17 10:32:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:04,984 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-10-17 10:32:04,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:32:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-10-17 10:32:04,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:32:04,985 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:04,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:05,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:32:05,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:05,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:05,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash -562345857, now seen corresponding path program 1 times [2022-10-17 10:32:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:05,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880399901] [2022-10-17 10:32:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:05,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:32:05,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623018364] [2022-10-17 10:32:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:05,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:05,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:05,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:32:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:05,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:32:05,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:32:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:32:05,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:32:05,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:05,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880399901] [2022-10-17 10:32:05,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:32:05,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623018364] [2022-10-17 10:32:05,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623018364] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:05,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:05,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:32:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978623661] [2022-10-17 10:32:05,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:05,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:32:05,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:05,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:32:05,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:32:05,415 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-17 10:32:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:05,491 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-10-17 10:32:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:32:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-10-17 10:32:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:05,493 INFO L225 Difference]: With dead ends: 59 [2022-10-17 10:32:05,493 INFO L226 Difference]: Without dead ends: 36 [2022-10-17 10:32:05,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:32:05,496 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:05,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 100 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:32:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-17 10:32:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-10-17 10:32:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:32:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-10-17 10:32:05,504 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2022-10-17 10:32:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:05,504 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-10-17 10:32:05,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-17 10:32:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-10-17 10:32:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:32:05,506 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:05,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:05,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:32:05,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:05,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:05,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1168592577, now seen corresponding path program 1 times [2022-10-17 10:32:05,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:05,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786183432] [2022-10-17 10:32:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:05,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:05,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:32:05,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796347053] [2022-10-17 10:32:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:05,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:05,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:05,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:32:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:05,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 72 conjunts are in the unsatisfiable core [2022-10-17 10:32:05,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:32:05,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-17 10:32:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:06,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-10-17 10:32:06,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-10-17 10:32:06,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-17 10:32:06,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-17 10:32:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:06,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 162 [2022-10-17 10:32:06,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 154 [2022-10-17 10:32:06,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:06,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:06,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-10-17 10:32:06,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:06,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-10-17 10:32:06,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 20 [2022-10-17 10:32:07,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:07,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:07,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2022-10-17 10:32:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:07,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:32:23,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:23,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786183432] [2022-10-17 10:32:23,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:32:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796347053] [2022-10-17 10:32:23,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796347053] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:32:23,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:32:23,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-10-17 10:32:23,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798861659] [2022-10-17 10:32:23,355 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 10:32:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 10:32:23,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:23,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 10:32:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=743, Unknown=6, NotChecked=0, Total=870 [2022-10-17 10:32:23,359 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:32:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:23,725 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-10-17 10:32:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:32:23,726 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-10-17 10:32:23,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:23,729 INFO L225 Difference]: With dead ends: 57 [2022-10-17 10:32:23,729 INFO L226 Difference]: Without dead ends: 53 [2022-10-17 10:32:23,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=138, Invalid=848, Unknown=6, NotChecked=0, Total=992 [2022-10-17 10:32:23,731 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:23,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 215 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-10-17 10:32:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-17 10:32:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-10-17 10:32:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-17 10:32:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-10-17 10:32:23,757 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 36 [2022-10-17 10:32:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:23,757 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-10-17 10:32:23,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:32:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-10-17 10:32:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:32:23,763 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:23,764 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-10-17 10:32:23,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:32:23,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:23,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:23,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1846883197, now seen corresponding path program 2 times [2022-10-17 10:32:23,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:23,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104382958] [2022-10-17 10:32:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:23,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:24,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:32:24,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807977922] [2022-10-17 10:32:24,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:32:24,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:24,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:24,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:24,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:32:24,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:32:24,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:32:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:32:24,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:32:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:32:24,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:32:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:32:24,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:24,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104382958] [2022-10-17 10:32:24,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:32:24,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807977922] [2022-10-17 10:32:24,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807977922] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:32:24,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:32:24,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-10-17 10:32:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029463434] [2022-10-17 10:32:24,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:32:24,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:32:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:32:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:32:24,485 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-17 10:32:25,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:25,012 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2022-10-17 10:32:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:32:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2022-10-17 10:32:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:25,015 INFO L225 Difference]: With dead ends: 89 [2022-10-17 10:32:25,015 INFO L226 Difference]: Without dead ends: 85 [2022-10-17 10:32:25,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:32:25,017 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:25,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 145 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:32:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-10-17 10:32:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2022-10-17 10:32:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-17 10:32:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2022-10-17 10:32:25,040 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 38 [2022-10-17 10:32:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:25,043 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2022-10-17 10:32:25,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-17 10:32:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2022-10-17 10:32:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:32:25,051 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:25,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:25,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:32:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:25,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash 383375294, now seen corresponding path program 1 times [2022-10-17 10:32:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:25,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655785223] [2022-10-17 10:32:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:25,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:25,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:32:25,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372077527] [2022-10-17 10:32:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:25,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:25,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:25,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b382435a-eb25-4a03-b4a2-af6ac45dbffd/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:32:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:25,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 93 conjunts are in the unsatisfiable core [2022-10-17 10:32:25,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:32:25,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-17 10:32:25,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-10-17 10:32:26,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:26,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 169 [2022-10-17 10:32:26,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 161 [2022-10-17 10:32:26,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:26,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:26,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 201 [2022-10-17 10:32:26,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:26,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2022-10-17 10:32:26,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 10:32:27,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:27,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:32:27,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:27,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:27,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 160 [2022-10-17 10:32:27,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 143 [2022-10-17 10:32:27,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 197 [2022-10-17 10:32:27,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 20 [2022-10-17 10:32:28,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:28,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:32:28,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2022-10-17 10:32:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:32:28,987 INFO L328 TraceCheckSpWp]: Computing backward predicates...