./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8 --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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- 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-2329fc7 [2022-12-13 21:33:58,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:33:58,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:33:58,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:33:58,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:33:58,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:33:58,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:33:58,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:33:58,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:33:58,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:33:58,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:33:58,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:33:58,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:33:58,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:33:58,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:33:58,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:33:58,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:33:58,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:33:58,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:33:58,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:33:58,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:33:58,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:33:58,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:33:58,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:33:58,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:33:58,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:33:58,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:33:58,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:33:58,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:33:58,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:33:58,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:33:58,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:33:58,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:33:58,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:33:58,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:33:58,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:33:58,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:33:58,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:33:58,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:33:58,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:33:58,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:33:58,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:33:58,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:33:58,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:33:58,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:33:58,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:33:58,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:33:58,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:33:58,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:33:58,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:33:58,126 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:33:58,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:33:58,126 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:33:58,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:33:58,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:33:58,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:33:58,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:33:58,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:33:58,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:33:58,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:33:58,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:33:58,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:33:58,129 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:33:58,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:33:58,129 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:33:58,129 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2022-12-13 21:33:58,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:33:58,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:33:58,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:33:58,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:33:58,323 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:33:58,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-tiling/tcpy.c [2022-12-13 21:34:00,848 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:34:00,996 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:34:00,997 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/sv-benchmarks/c/array-tiling/tcpy.c [2022-12-13 21:34:01,001 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/data/ed4b99947/2001627490524a46ac8c91dd49f697cf/FLAG43715b75d [2022-12-13 21:34:01,422 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/data/ed4b99947/2001627490524a46ac8c91dd49f697cf [2022-12-13 21:34:01,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:34:01,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:34:01,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:01,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:34:01,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:34:01,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b3bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01, skipping insertion in model container [2022-12-13 21:34:01,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:34:01,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:34:01,541 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_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-12-13 21:34:01,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:34:01,561 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:34:01,569 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_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-12-13 21:34:01,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:34:01,583 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:34:01,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01 WrapperNode [2022-12-13 21:34:01,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:01,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:34:01,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:34:01,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:34:01,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,608 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-12-13 21:34:01,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:34:01,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:34:01,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:34:01,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:34:01,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:34:01,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:34:01,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:34:01,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:34:01,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (1/1) ... [2022-12-13 21:34:01,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:34:01,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:01,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:34:01,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:34:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:34:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:34:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:34:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:34:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:34:01,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:34:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:34:01,753 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:34:01,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:34:01,881 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:34:01,885 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:34:01,886 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 21:34:01,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:34:01 BoogieIcfgContainer [2022-12-13 21:34:01,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:34:01,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:34:01,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:34:01,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:34:01,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:34:01" (1/3) ... [2022-12-13 21:34:01,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a726c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:34:01, skipping insertion in model container [2022-12-13 21:34:01,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:01" (2/3) ... [2022-12-13 21:34:01,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a726c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:34:01, skipping insertion in model container [2022-12-13 21:34:01,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:34:01" (3/3) ... [2022-12-13 21:34:01,895 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2022-12-13 21:34:01,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:34:01,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:34:01,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:34:01,965 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;@352ed567, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:34:01,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:34:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:34:01,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:01,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:01,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:34:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1608152958, now seen corresponding path program 1 times [2022-12-13 21:34:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:01,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276239995] [2022-12-13 21:34:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276239995] [2022-12-13 21:34:02,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276239995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:02,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:02,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:34:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763986679] [2022-12-13 21:34:02,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:02,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:34:02,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:34:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:34:02,156 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:34:02,170 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2022-12-13 21:34:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:34:02,171 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 21:34:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:34:02,177 INFO L225 Difference]: With dead ends: 37 [2022-12-13 21:34:02,178 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 21:34:02,180 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 [2022-12-13 21:34:02,183 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-12-13 21:34:02,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:34:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 21:34:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 21:34:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2022-12-13 21:34:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 21:34:02,209 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-12-13 21:34:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:34:02,209 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 21:34:02,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 21:34:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:34:02,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:02,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:02,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:34:02,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:34:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1873320706, now seen corresponding path program 1 times [2022-12-13 21:34:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:02,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876189115] [2022-12-13 21:34:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876189115] [2022-12-13 21:34:02,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876189115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:02,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:02,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:34:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857932731] [2022-12-13 21:34:02,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:34:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:34:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:34:02,349 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:02,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:34:02,377 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-12-13 21:34:02,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:34:02,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 21:34:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:34:02,378 INFO L225 Difference]: With dead ends: 31 [2022-12-13 21:34:02,378 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 21:34:02,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:34:02,379 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:34:02,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:34:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 21:34:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-12-13 21:34:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-12-13 21:34:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-12-13 21:34:02,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-12-13 21:34:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:34:02,383 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-12-13 21:34:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-12-13 21:34:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 21:34:02,383 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:02,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:34:02,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:34:02,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash -270521828, now seen corresponding path program 1 times [2022-12-13 21:34:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231567189] [2022-12-13 21:34:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:02,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:02,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231567189] [2022-12-13 21:34:02,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231567189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310477110] [2022-12-13 21:34:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:02,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:34:02,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:34:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:02,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:34:02,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:02,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:02,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310477110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:34:02,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:34:02,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:34:02,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248282127] [2022-12-13 21:34:02,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:34:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:02,599 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-12-13 21:34:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:34:02,644 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-12-13 21:34:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:34:02,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 21:34:02,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:34:02,645 INFO L225 Difference]: With dead ends: 33 [2022-12-13 21:34:02,645 INFO L226 Difference]: Without dead ends: 21 [2022-12-13 21:34:02,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:02,646 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:34:02,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 32 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:34:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-13 21:34:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-12-13 21:34:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-12-13 21:34:02,649 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2022-12-13 21:34:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:34:02,649 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-12-13 21:34:02,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-12-13 21:34:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-12-13 21:34:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 21:34:02,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:02,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:02,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:34:02,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:02,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:34:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1874059334, now seen corresponding path program 2 times [2022-12-13 21:34:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:02,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136830314] [2022-12-13 21:34:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:34:03,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:03,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136830314] [2022-12-13 21:34:03,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136830314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:03,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:03,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:34:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496839471] [2022-12-13 21:34:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:03,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:34:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:34:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:34:03,118 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-12-13 21:34:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:34:03,166 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-12-13 21:34:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:34:03,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 16 [2022-12-13 21:34:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:34:03,167 INFO L225 Difference]: With dead ends: 35 [2022-12-13 21:34:03,167 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 21:34:03,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:34:03,169 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:34:03,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:34:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 21:34:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-12-13 21:34:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-12-13 21:34:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-12-13 21:34:03,175 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2022-12-13 21:34:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:34:03,176 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-12-13 21:34:03,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-12-13 21:34:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-12-13 21:34:03,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:34:03,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:03,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:03,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:34:03,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:34:03,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash 265660728, now seen corresponding path program 1 times [2022-12-13 21:34:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:03,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747679579] [2022-12-13 21:34:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:34:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:03,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747679579] [2022-12-13 21:34:03,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747679579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:03,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509410810] [2022-12-13 21:34:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:03,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:03,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:03,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:34:03,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:34:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:03,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 21:34:03,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:03,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 21:34:03,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:03,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:03,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-12-13 21:34:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:34:03,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:04,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:34:04,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 752 treesize of output 718 [2022-12-13 21:34:04,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 414 [2022-12-13 21:34:07,390 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-12-13 21:34:07,391 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 611 treesize of output 538 [2022-12-13 21:34:07,448 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:07,460 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:07,473 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:07,485 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:34:07,485 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 414 treesize of output 378 [2022-12-13 21:34:07,522 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-12-13 21:34:07,522 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 611 treesize of output 538 [2022-12-13 21:34:07,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:07,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:07,579 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:07,591 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:07,604 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:07,627 INFO L321 Elim1Store]: treesize reduction 10, result has 67.7 percent of original size [2022-12-13 21:34:07,627 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 342 treesize of output 290 [2022-12-13 21:34:07,695 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 21:34:07,695 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 198 treesize of output 166 [2022-12-13 21:34:07,729 INFO L321 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2022-12-13 21:34:07,729 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 611 treesize of output 541 [2022-12-13 21:34:07,791 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:07,806 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 587 treesize of output 1 [2022-12-13 21:34:07,821 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:07,837 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:07,837 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 587 treesize of output 1 [2022-12-13 21:34:07,865 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:34:07,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 443 treesize of output 418 [2022-12-13 21:34:07,898 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:34:07,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 323 treesize of output 302 [2022-12-13 21:34:07,947 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:34:07,947 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 443 treesize of output 418 [2022-12-13 21:34:07,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 262 [2022-12-13 21:34:08,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 262 [2022-12-13 21:34:08,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 117 [2022-12-13 21:34:08,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,057 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:34:08,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 323 treesize of output 302 [2022-12-13 21:34:08,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,223 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:34:08,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 1 [2022-12-13 21:34:08,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,231 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:34:08,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2022-12-13 21:34:08,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 1 [2022-12-13 21:34:08,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2022-12-13 21:34:08,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 1 [2022-12-13 21:34:08,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,537 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:08,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,552 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 462 treesize of output 1 [2022-12-13 21:34:08,567 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:08,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 462 treesize of output 1 [2022-12-13 21:34:08,583 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 21:34:08,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:08,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,607 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 1 [2022-12-13 21:34:08,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-13 21:34:08,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,656 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:08,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,672 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:08,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,689 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 467 treesize of output 1 [2022-12-13 21:34:08,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,703 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 1 [2022-12-13 21:34:08,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,727 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 1 [2022-12-13 21:34:08,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,741 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 318 treesize of output 1 [2022-12-13 21:34:08,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,755 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 467 treesize of output 1 [2022-12-13 21:34:08,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,769 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 467 treesize of output 1 [2022-12-13 21:34:08,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,781 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 318 treesize of output 1 [2022-12-13 21:34:08,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,795 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 1 [2022-12-13 21:34:08,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,815 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 467 treesize of output 1 [2022-12-13 21:34:08,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,829 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 1 [2022-12-13 21:34:08,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,843 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:08,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,856 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 611 treesize of output 1 [2022-12-13 21:34:08,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,869 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 467 treesize of output 1 [2022-12-13 21:34:08,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,881 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 1 [2022-12-13 21:34:08,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:08,901 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:34:08,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 1 [2022-12-13 21:34:08,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 204 [2022-12-13 21:34:08,954 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 21:34:08,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 101 [2022-12-13 21:34:08,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:08,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:34:09,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:09,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:34:09,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509410810] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:34:09,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:34:09,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2022-12-13 21:34:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100914768] [2022-12-13 21:34:09,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:34:09,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 21:34:09,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 21:34:09,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-13 21:34:09,418 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2022-12-13 21:34:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:34:09,604 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-12-13 21:34:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:34:09,605 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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 18 [2022-12-13 21:34:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:34:09,605 INFO L225 Difference]: With dead ends: 29 [2022-12-13 21:34:09,605 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 21:34:09,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2022-12-13 21:34:09,607 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:34:09,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 35 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:34:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 21:34:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-12-13 21:34:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2022-12-13 21:34:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-12-13 21:34:09,612 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2022-12-13 21:34:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:34:09,612 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-12-13 21:34:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2022-12-13 21:34:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-12-13 21:34:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 21:34:09,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:09,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:09,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:34:09,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:09,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:34:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1994055598, now seen corresponding path program 1 times [2022-12-13 21:34:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:09,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808132680] [2022-12-13 21:34:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:10,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:10,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808132680] [2022-12-13 21:34:10,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808132680] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:10,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768665106] [2022-12-13 21:34:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:10,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:10,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:34:10,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:34:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:10,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 21:34:10,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:10,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 21:34:10,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 21:34:10,480 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2022-12-13 21:34:10,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-12-13 21:34:10,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:10,671 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-13 21:34:10,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 23 [2022-12-13 21:34:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:10,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:12,754 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse0 (store (let ((.cse1 (* (- 4) |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (* 4 c_~SIZE~0))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|) (+ .cse1 (- 4) .cse2 |ULTIMATE.start_main_~acopy~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse1 (- 4) .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|) v_ArrVal_103))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4))))) is different from false [2022-12-13 21:34:40,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:34:40,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1174 treesize of output 951 [2022-12-13 21:34:40,683 INFO L321 Elim1Store]: treesize reduction 39, result has 62.1 percent of original size [2022-12-13 21:34:40,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 1443 treesize of output 1337 [2022-12-13 21:34:40,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:34:40,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1507 treesize of output 1399 [2022-12-13 21:34:42,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:34:42,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-12-13 21:34:42,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,480 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,485 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,488 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:34:42,501 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2022-12-13 21:34:42,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-12-13 21:34:42,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-12-13 21:34:42,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,564 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-12-13 21:34:42,579 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:34:42,585 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:42,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-12-13 21:34:42,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-13 21:34:42,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:42,616 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:34:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 21:34:52,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768665106] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:34:52,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:34:52,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14] total 33 [2022-12-13 21:34:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335890359] [2022-12-13 21:34:52,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:34:52,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 21:34:52,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 21:34:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=785, Unknown=15, NotChecked=60, Total=1056 [2022-12-13 21:34:52,944 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:01,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:03,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:05,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:07,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:09,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:11,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:13,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:15,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:17,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:19,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:21,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:23,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:25,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:27,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:29,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:31,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:33,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:34,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:36,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:35:38,840 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (* 4 c_~SIZE~0))) (and (forall ((v_ArrVal_103 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse0 (store .cse2 (+ (- 4) .cse3 |ULTIMATE.start_main_~acopy~0#1.offset|) (select .cse4 (+ (- 4) .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (= (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| (store .cse0 |ULTIMATE.start_main_~acopy~0#1.offset| v_ArrVal_103)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (forall ((v_ArrVal_103 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse5 (store (let ((.cse6 (* (- 4) |c_ULTIMATE.start_main_~i~0#1|))) (store .cse2 (+ .cse6 (- 4) .cse3 |ULTIMATE.start_main_~acopy~0#1.offset|) (select .cse4 (+ .cse6 (- 4) .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|) v_ArrVal_103))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) (select .cse5 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4))))))) is different from false [2022-12-13 21:35:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:45,692 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2022-12-13 21:35:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 21:35:45,692 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-13 21:35:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:45,693 INFO L225 Difference]: With dead ends: 82 [2022-12-13 21:35:45,693 INFO L226 Difference]: Without dead ends: 71 [2022-12-13 21:35:45,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=642, Invalid=2427, Unknown=19, NotChecked=218, Total=3306 [2022-12-13 21:35:45,696 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 143 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 28 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:45,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 119 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 292 Invalid, 18 Unknown, 52 Unchecked, 37.9s Time] [2022-12-13 21:35:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-13 21:35:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2022-12-13 21:35:45,706 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) [2022-12-13 21:35:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-12-13 21:35:45,707 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 22 [2022-12-13 21:35:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:45,707 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-12-13 21:35:45,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-12-13 21:35:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 21:35:45,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:45,708 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:45,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:35:45,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:45,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash -757863644, now seen corresponding path program 2 times [2022-12-13 21:35:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:45,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678642912] [2022-12-13 21:35:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:45,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:35:46,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:46,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678642912] [2022-12-13 21:35:46,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678642912] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:46,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515092213] [2022-12-13 21:35:46,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:35:46,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:46,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:46,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:35:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:35:46,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:35:46,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:46,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:35:46,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:35:46,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:35:46,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515092213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:35:46,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:35:46,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-13 21:35:46,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237904333] [2022-12-13 21:35:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:35:46,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:35:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:35:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:35:46,197 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2022-12-13 21:35:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:46,339 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-12-13 21:35:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:35:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 21:35:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:46,341 INFO L225 Difference]: With dead ends: 83 [2022-12-13 21:35:46,341 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 21:35:46,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-13 21:35:46,342 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:46,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 66 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:35:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 21:35:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2022-12-13 21:35:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-12-13 21:35:46,348 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2022-12-13 21:35:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:46,348 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-12-13 21:35:46,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2022-12-13 21:35:46,348 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-12-13 21:35:46,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 21:35:46,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:46,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:46,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:35:46,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:46,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash -980493622, now seen corresponding path program 3 times [2022-12-13 21:35:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:46,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927749378] [2022-12-13 21:35:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:46,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:35:46,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:46,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927749378] [2022-12-13 21:35:46,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927749378] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:46,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284810841] [2022-12-13 21:35:46,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:35:46,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:46,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:46,911 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:35:46,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:35:46,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 21:35:46,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:46,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 21:35:46,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:46,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 21:35:47,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:47,095 INFO L321 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2022-12-13 21:35:47,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 37 [2022-12-13 21:35:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 21:35:47,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:47,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:35:47,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 938 treesize of output 882 [2022-12-13 21:35:47,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 874 treesize of output 802 [2022-12-13 21:35:56,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 395 treesize of output 379 [2022-12-13 21:35:56,087 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-13 21:35:56,087 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 357 treesize of output 282 [2022-12-13 21:35:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:56,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:56,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 643 treesize of output 611 [2022-12-13 21:35:56,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 125 [2022-12-13 21:35:56,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:56,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:56,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,294 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-12-13 21:35:56,294 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 281 treesize of output 237 [2022-12-13 21:35:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2022-12-13 21:35:56,382 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,382 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 206 treesize of output 1 [2022-12-13 21:35:56,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,425 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,426 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 200 treesize of output 1 [2022-12-13 21:35:56,437 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,437 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 139 treesize of output 1 [2022-12-13 21:35:56,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,462 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-13 21:35:56,462 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 151 treesize of output 1 [2022-12-13 21:35:56,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,490 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-13 21:35:56,490 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 212 treesize of output 1 [2022-12-13 21:35:56,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,522 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,522 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 200 treesize of output 1 [2022-12-13 21:35:56,534 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,534 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 139 treesize of output 1 [2022-12-13 21:35:56,544 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,544 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 200 treesize of output 1 [2022-12-13 21:35:56,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2022-12-13 21:35:56,577 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-13 21:35:56,577 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 220 treesize of output 1 [2022-12-13 21:35:56,589 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,589 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 139 treesize of output 1 [2022-12-13 21:35:56,604 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,604 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 200 treesize of output 1 [2022-12-13 21:35:56,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,629 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,629 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 200 treesize of output 1 [2022-12-13 21:35:56,641 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,642 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 139 treesize of output 1 [2022-12-13 21:35:56,655 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,655 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 139 treesize of output 1 [2022-12-13 21:35:56,671 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:35:56,671 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 200 treesize of output 1 [2022-12-13 21:35:56,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,724 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:56,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 281 treesize of output 1 [2022-12-13 21:35:56,741 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:35:56,742 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 82 treesize of output 65 [2022-12-13 21:35:56,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,784 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:56,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 1 [2022-12-13 21:35:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,810 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:56,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 360 treesize of output 1 [2022-12-13 21:35:56,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 1 [2022-12-13 21:35:56,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,833 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:56,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 1 [2022-12-13 21:35:56,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 1 [2022-12-13 21:35:56,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:56,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 1 [2022-12-13 21:35:56,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:56,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,871 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:56,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 1 [2022-12-13 21:35:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 1 [2022-12-13 21:35:56,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 1 [2022-12-13 21:35:56,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,916 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:56,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 208 treesize of output 1 [2022-12-13 21:35:56,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:56,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:56,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-12-13 21:35:56,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:56,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:56,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 1 [2022-12-13 21:35:56,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:56,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 1 [2022-12-13 21:35:56,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:56,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 168 [2022-12-13 21:35:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:57,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 21:35:57,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2022-12-13 21:35:57,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:57,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:57,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2022-12-13 21:35:57,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,134 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:57,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 1 [2022-12-13 21:35:57,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2022-12-13 21:35:57,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-13 21:35:57,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 1 [2022-12-13 21:35:57,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2022-12-13 21:35:57,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 1 [2022-12-13 21:35:57,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,199 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:57,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 208 treesize of output 1 [2022-12-13 21:35:57,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,210 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-13 21:35:57,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 1 [2022-12-13 21:35:57,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:35:57,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:35:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 21:35:57,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284810841] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:35:57,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:35:57,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2022-12-13 21:35:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208117852] [2022-12-13 21:35:57,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:35:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 21:35:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 21:35:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-12-13 21:35:57,340 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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) [2022-12-13 21:35:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:58,994 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-12-13 21:35:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 21:35:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 21:35:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:58,995 INFO L225 Difference]: With dead ends: 101 [2022-12-13 21:35:58,995 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 21:35:58,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=846, Invalid=3710, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 21:35:58,996 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 276 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:58,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 137 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:35:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 21:35:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 34. [2022-12-13 21:35:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 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) [2022-12-13 21:35:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-12-13 21:35:59,001 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 26 [2022-12-13 21:35:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:59,001 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-12-13 21:35:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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) [2022-12-13 21:35:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-12-13 21:35:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 21:35:59,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:59,002 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:59,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:35:59,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:59,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1750966422, now seen corresponding path program 4 times [2022-12-13 21:35:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:59,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887409116] [2022-12-13 21:35:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:35:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:59,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887409116] [2022-12-13 21:35:59,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887409116] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:59,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143892407] [2022-12-13 21:35:59,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:35:59,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:59,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:59,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:35:59,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:35:59,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:35:59,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:59,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:35:59,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:35:59,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:59,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143892407] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:35:59,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:35:59,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 25 [2022-12-13 21:35:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748629885] [2022-12-13 21:35:59,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:35:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 21:35:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 21:35:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:35:59,832 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:00,217 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2022-12-13 21:36:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:36:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 21:36:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:00,218 INFO L225 Difference]: With dead ends: 54 [2022-12-13 21:36:00,218 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 21:36:00,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 21:36:00,219 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 134 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:00,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 99 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:36:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 21:36:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2022-12-13 21:36:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-12-13 21:36:00,224 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2022-12-13 21:36:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:00,224 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-12-13 21:36:00,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-12-13 21:36:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 21:36:00,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:00,225 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:00,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:36:00,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:00,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:36:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash 659943902, now seen corresponding path program 5 times [2022-12-13 21:36:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:00,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931072954] [2022-12-13 21:36:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931072954] [2022-12-13 21:36:02,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931072954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210029403] [2022-12-13 21:36:02,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:36:02,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:02,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:02,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:36:02,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 21:36:02,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:02,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 21:36:02,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:02,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 21:36:02,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:02,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-12-13 21:36:03,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2022-12-13 21:36:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:03,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:03,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:03,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 258 [2022-12-13 21:36:03,431 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:36:03,431 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 85 treesize of output 51 [2022-12-13 21:36:03,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-13 21:36:03,460 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:36:03,461 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 120 treesize of output 1 [2022-12-13 21:36:03,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 25 [2022-12-13 21:36:03,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 51 [2022-12-13 21:36:03,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 25 [2022-12-13 21:36:03,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2022-12-13 21:36:03,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 25 [2022-12-13 21:36:03,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,518 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:36:03,518 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 120 treesize of output 1 [2022-12-13 21:36:03,524 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:36:03,525 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 75 treesize of output 1 [2022-12-13 21:36:03,531 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:36:03,531 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 39 treesize of output 1 [2022-12-13 21:36:03,563 INFO L321 Elim1Store]: treesize reduction 13, result has 67.5 percent of original size [2022-12-13 21:36:03,563 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 159 treesize of output 141 [2022-12-13 21:36:03,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 111 [2022-12-13 21:36:03,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 54 [2022-12-13 21:36:03,630 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-13 21:36:03,630 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 159 treesize of output 111 [2022-12-13 21:36:03,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,663 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 21:36:03,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,689 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-13 21:36:03,690 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 92 treesize of output 58 [2022-12-13 21:36:03,744 INFO L321 Elim1Store]: treesize reduction 19, result has 52.5 percent of original size [2022-12-13 21:36:03,745 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 183 treesize of output 139 [2022-12-13 21:36:03,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,859 INFO L321 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2022-12-13 21:36:03,859 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 128 treesize of output 1 [2022-12-13 21:36:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2022-12-13 21:36:03,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2022-12-13 21:36:03,906 INFO L321 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2022-12-13 21:36:03,906 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 159 treesize of output 131 [2022-12-13 21:36:03,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2022-12-13 21:36:03,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:03,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:03,949 INFO L321 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2022-12-13 21:36:03,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 1 [2022-12-13 21:36:03,965 INFO L321 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2022-12-13 21:36:03,966 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 250 treesize of output 1 [2022-12-13 21:36:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:04,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210029403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:04,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:04,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 49 [2022-12-13 21:36:04,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816442515] [2022-12-13 21:36:04,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:04,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 21:36:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 21:36:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1989, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 21:36:04,966 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 49 states, 49 states have (on average 1.816326530612245) internal successors, (89), 49 states have internal predecessors, (89), 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) [2022-12-13 21:36:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:09,123 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2022-12-13 21:36:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 21:36:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.816326530612245) internal successors, (89), 49 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-13 21:36:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:09,125 INFO L225 Difference]: With dead ends: 134 [2022-12-13 21:36:09,125 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 21:36:09,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2349 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1539, Invalid=7391, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 21:36:09,128 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 403 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:09,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 292 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 21:36:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 21:36:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 58. [2022-12-13 21:36:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 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) [2022-12-13 21:36:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-12-13 21:36:09,139 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 32 [2022-12-13 21:36:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:09,139 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-12-13 21:36:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.816326530612245) internal successors, (89), 49 states have internal predecessors, (89), 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) [2022-12-13 21:36:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-12-13 21:36:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 21:36:09,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:09,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:09,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:36:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:36:09,343 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:36:09,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -837130924, now seen corresponding path program 6 times [2022-12-13 21:36:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:09,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605747501] [2022-12-13 21:36:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605747501] [2022-12-13 21:36:10,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605747501] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519088289] [2022-12-13 21:36:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:36:10,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:10,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:10,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f20cb7a-9cd3-44ca-ad5c-b55c4f6c222e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:36:10,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 21:36:10,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:10,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 21:36:10,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:10,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 21:36:10,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:36:10,984 INFO L321 Elim1Store]: treesize reduction 37, result has 28.8 percent of original size [2022-12-13 21:36:10,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-12-13 21:36:11,113 INFO L321 Elim1Store]: treesize reduction 113, result has 25.7 percent of original size [2022-12-13 21:36:11,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 68 [2022-12-13 21:36:11,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:36:11,754 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-13 21:36:11,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 23 [2022-12-13 21:36:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:11,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:24,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:24,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 6619080 treesize of output 5689301 [2022-12-13 21:36:30,188 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 2149 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 21:36:30,435 INFO L321 Elim1Store]: treesize reduction 85, result has 28.6 percent of original size [2022-12-13 21:36:30,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 9994197 treesize of output 9281513 [2022-12-13 21:36:40,218 WARN L233 SmtUtils]: Spent 9.78s on a formula simplification that was a NOOP. DAG size: 2183 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 21:36:49,883 WARN L233 SmtUtils]: Spent 9.65s on a formula simplification that was a NOOP. DAG size: 2175 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 21:36:50,073 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:36:50,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9871321 treesize of output 9461723 [2022-12-13 21:37:00,482 WARN L233 SmtUtils]: Spent 10.40s on a formula simplification that was a NOOP. DAG size: 2176 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 21:37:10,116 WARN L233 SmtUtils]: Spent 9.63s on a formula simplification that was a NOOP. DAG size: 2173 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 21:37:10,411 INFO L321 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2022-12-13 21:37:10,416 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 1328947159 treesize of output 1276780509