./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ncomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:05:55,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:05:55,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:05:55,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:05:55,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:05:55,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:05:55,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:05:55,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:05:55,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:05:55,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:05:55,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:05:55,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:05:55,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:05:55,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:05:55,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:05:55,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:05:55,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:05:55,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:05:55,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:05:55,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:05:55,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:05:55,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:05:55,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:05:55,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:05:55,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:05:55,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:05:55,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:05:55,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:05:55,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:05:55,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:05:55,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:05:55,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:05:55,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:05:55,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:05:55,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:05:55,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:05:55,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:05:55,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:05:55,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:05:55,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:05:55,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:05:55,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:05:55,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:05:55,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:05:55,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:05:55,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:05:55,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:05:55,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:05:55,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:05:55,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:05:55,142 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:05:55,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:05:55,143 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:05:55,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:05:55,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:05:55,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:05:55,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:05:55,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:05:55,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:05:55,144 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:05:55,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:05:55,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:05:55,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:05:55,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:05:55,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:05:55,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:05:55,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:05:55,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:05:55,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:05:55,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:05:55,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:05:55,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:05:55,147 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:05:55,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:05:55,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:05:55,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d [2022-11-20 11:05:55,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:05:55,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:05:55,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:05:55,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:05:55,534 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:05:55,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/ncomp.c [2022-11-20 11:05:58,542 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:05:58,753 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:05:58,754 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/sv-benchmarks/c/array-fpi/ncomp.c [2022-11-20 11:05:58,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/data/bdb606487/fd8c5a28556e48e2aa7ed4f05531446d/FLAG7e39df2b4 [2022-11-20 11:05:58,786 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/data/bdb606487/fd8c5a28556e48e2aa7ed4f05531446d [2022-11-20 11:05:58,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:05:58,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:05:58,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:05:58,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:05:58,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:05:58,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:05:58" (1/1) ... [2022-11-20 11:05:58,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf3e1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:58, skipping insertion in model container [2022-11-20 11:05:58,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:05:58" (1/1) ... [2022-11-20 11:05:58,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:05:58,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:05:59,053 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_f74ec4bf-5673-4bd2-803c-1e2d95615c83/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2022-11-20 11:05:59,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:05:59,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:05:59,107 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_f74ec4bf-5673-4bd2-803c-1e2d95615c83/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2022-11-20 11:05:59,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:05:59,132 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:05:59,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59 WrapperNode [2022-11-20 11:05:59,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:05:59,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:05:59,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:05:59,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:05:59,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,204 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2022-11-20 11:05:59,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:05:59,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:05:59,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:05:59,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:05:59,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,252 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:05:59,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:05:59,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:05:59,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:05:59,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (1/1) ... [2022-11-20 11:05:59,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:05:59,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:59,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:05:59,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:05:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:05:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:05:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:05:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:05:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:05:59,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:05:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:05:59,437 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:05:59,439 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:05:59,637 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:05:59,643 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:05:59,643 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:05:59,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:59 BoogieIcfgContainer [2022-11-20 11:05:59,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:05:59,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:05:59,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:05:59,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:05:59,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:05:58" (1/3) ... [2022-11-20 11:05:59,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315d449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:05:59, skipping insertion in model container [2022-11-20 11:05:59,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:59" (2/3) ... [2022-11-20 11:05:59,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315d449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:05:59, skipping insertion in model container [2022-11-20 11:05:59,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:59" (3/3) ... [2022-11-20 11:05:59,656 INFO L112 eAbstractionObserver]: Analyzing ICFG ncomp.c [2022-11-20 11:05:59,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:05:59,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:05:59,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:05:59,737 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;@4d2d29b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:05:59,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:05:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:05:59,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:59,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:59,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2022-11-20 11:05:59,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:59,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178512331] [2022-11-20 11:05:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:59,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178512331] [2022-11-20 11:05:59,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:05:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866485827] [2022-11-20 11:05:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:59,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:00,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:00,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:06:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:00,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:06:00,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:00,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:00,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866485827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:00,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:00,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:06:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051769720] [2022-11-20 11:06:00,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:06:00,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:06:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:06:00,322 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 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) [2022-11-20 11:06:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:00,345 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-11-20 11:06:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:06:00,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:06:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:00,358 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:06:00,358 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 11:06:00,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:06:00,368 INFO L413 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:00,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:06:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 11:06:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 11:06:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2022-11-20 11:06:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-20 11:06:00,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-11-20 11:06:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:00,411 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-20 11:06:00,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-20 11:06:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:06:00,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:00,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:00,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:00,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:06:00,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2022-11-20 11:06:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:00,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377649763] [2022-11-20 11:06:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:00,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:00,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:00,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407564483] [2022-11-20 11:06:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:00,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:00,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:00,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:00,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:06:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:00,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:06:00,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:01,085 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-20 11:06:01,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2022-11-20 11:06:01,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:01,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:01,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:02,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:02,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:02,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 14 [2022-11-20 11:06:02,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:02,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:02,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:02,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2022-11-20 11:06:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:02,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:02,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377649763] [2022-11-20 11:06:02,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407564483] [2022-11-20 11:06:02,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407564483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:02,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:02,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:06:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477644775] [2022-11-20 11:06:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:06:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:06:02,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:06:02,627 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-20 11:06:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:02,857 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-11-20 11:06:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:06:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 14 [2022-11-20 11:06:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:02,860 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:06:02,860 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:06:02,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:06:02,862 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:02,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 51 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:06:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-11-20 11:06:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-20 11:06:02,871 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2022-11-20 11:06:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:02,871 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-20 11:06:02,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-20 11:06:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-11-20 11:06:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:06:02,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:02,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:02,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:03,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:03,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2022-11-20 11:06:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:03,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444267380] [2022-11-20 11:06:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:03,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420514251] [2022-11-20 11:06:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:03,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:03,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:03,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:06:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:03,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:06:03,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:03,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:03,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:03,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444267380] [2022-11-20 11:06:03,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:03,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420514251] [2022-11-20 11:06:03,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420514251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:03,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:03,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:06:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145354598] [2022-11-20 11:06:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:06:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:06:03,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:06:03,327 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:03,503 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-11-20 11:06:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:06:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 [2022-11-20 11:06:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:03,505 INFO L225 Difference]: With dead ends: 62 [2022-11-20 11:06:03,505 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 11:06:03,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:06:03,506 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:03,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 11:06:03,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2022-11-20 11:06:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-20 11:06:03,514 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2022-11-20 11:06:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:03,515 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-20 11:06:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-20 11:06:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:06:03,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:03,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:03,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:03,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:03,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2022-11-20 11:06:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:03,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402402852] [2022-11-20 11:06:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:03,750 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:03,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159765847] [2022-11-20 11:06:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:03,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:03,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:03,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:06:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:03,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:06:03,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:03,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:03,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402402852] [2022-11-20 11:06:03,919 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:03,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159765847] [2022-11-20 11:06:03,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159765847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:03,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:03,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-20 11:06:03,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162947816] [2022-11-20 11:06:03,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:03,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:06:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:06:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:06:03,922 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:04,088 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-20 11:06:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:06:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 [2022-11-20 11:06:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:04,090 INFO L225 Difference]: With dead ends: 53 [2022-11-20 11:06:04,090 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:06:04,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:06:04,091 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:04,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 49 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:06:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2022-11-20 11:06:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 11:06:04,099 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2022-11-20 11:06:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:04,100 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 11:06:04,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 11:06:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:04,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:04,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:04,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:04,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2022-11-20 11:06:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175898451] [2022-11-20 11:06:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:04,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:04,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:04,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082450099] [2022-11-20 11:06:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:04,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:04,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:04,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:04,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:06:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:06:04,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:04,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:04,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175898451] [2022-11-20 11:06:04,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:04,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082450099] [2022-11-20 11:06:04,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082450099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:04,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:06:04,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:06:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455408729] [2022-11-20 11:06:04,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:04,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:06:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:06:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:06:04,517 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:04,638 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-11-20 11:06:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:06:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 [2022-11-20 11:06:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:04,639 INFO L225 Difference]: With dead ends: 48 [2022-11-20 11:06:04,639 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 11:06:04,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:06:04,641 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:04,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:04,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 11:06:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-11-20 11:06:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-20 11:06:04,645 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2022-11-20 11:06:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:04,646 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-20 11:06:04,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-20 11:06:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 11:06:04,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:04,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:04,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:04,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:04,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2022-11-20 11:06:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:04,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799902444] [2022-11-20 11:06:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:04,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:04,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891960957] [2022-11-20 11:06:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:04,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:04,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:04,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:04,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:06:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:05,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:06:05,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:05,331 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-20 11:06:05,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2022-11-20 11:06:05,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:05,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:05,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:05,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:05,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:05,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 84 [2022-11-20 11:06:05,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:05,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:05,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:05,612 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-11-20 11:06:05,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 92 [2022-11-20 11:06:05,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:05,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:05,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:05,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2022-11-20 11:06:05,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:05,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-20 11:06:05,965 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse4 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse1 (not .cse4)) (.cse0 (not .cse3))) (and (<= (mod c_~N~0 4294967296) 536870911) .cse0 .cse1 (let ((.cse2 (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (or (and .cse2 .cse3) (and (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (and .cse2 .cse4 (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse6 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20))) (and (= c_~N~0 (select v_DerPreprocessor_20 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse5 (select .cse6 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_19 (select .cse6 |c_ULTIMATE.start_main_~b~0#1.base|)))))) (and .cse2 .cse1 (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int)) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse8 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14))) (let ((.cse11 (store (store (store (store (store (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17))) (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse9 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse7 (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_15 .cse9) (= v_DerPreprocessor_12 .cse10) (= .cse7 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|)) (= c_~N~0 (select v_DerPreprocessor_17 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= c_~N~0 (select v_DerPreprocessor_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse5 .cse9) (= .cse5 .cse10))))))))) .cse0)))))) is different from true [2022-11-20 11:06:05,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:05,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:06,041 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:06:06,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 87 [2022-11-20 11:06:06,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:06,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:06,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:06,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:06:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 11:06:06,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:06,563 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_313 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-11-20 11:06:06,581 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_313 (Array Int Int)) (v_ArrVal_312 (Array Int Int))) (= c_~N~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_312) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-11-20 11:06:06,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:06,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 11:06:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799902444] [2022-11-20 11:06:06,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891960957] [2022-11-20 11:06:06,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891960957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:06,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:06,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-11-20 11:06:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709231726] [2022-11-20 11:06:06,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:06:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:06:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=121, Unknown=3, NotChecked=72, Total=240 [2022-11-20 11:06:06,599 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:06,666 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse5 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse1 (<= (mod c_~N~0 4294967296) 536870911)) (.cse0 (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) (.cse3 (not .cse5)) (.cse2 (not .cse4))) (and .cse0 .cse1 (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse1) (and (not .cse1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0))) .cse2 (forall ((v_ArrVal_313 (Array Int Int)) (v_ArrVal_312 (Array Int Int))) (= c_~N~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_312) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) .cse3 (or (and .cse0 .cse4) (and (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (and .cse0 .cse5 (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse7 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20))) (and (= c_~N~0 (select v_DerPreprocessor_20 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse6 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_19 (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|)))))) (and .cse0 .cse3 (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int)) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse9 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14))) (let ((.cse12 (store (store (store (store (store (store .cse9 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17))) (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse10 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse8 (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_15 .cse10) (= v_DerPreprocessor_12 .cse11) (= .cse8 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|)) (= c_~N~0 (select v_DerPreprocessor_17 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= c_~N~0 (select v_DerPreprocessor_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse6 .cse10) (= .cse6 .cse11))))))))) .cse2)) (= |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from true [2022-11-20 11:06:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:06,993 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-11-20 11:06:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:06:06,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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) Word has length 20 [2022-11-20 11:06:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:06,995 INFO L225 Difference]: With dead ends: 54 [2022-11-20 11:06:06,995 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 11:06:06,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=315, Unknown=4, NotChecked=164, Total=600 [2022-11-20 11:06:06,996 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:06,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 82 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 129 Invalid, 0 Unknown, 146 Unchecked, 0.2s Time] [2022-11-20 11:06:06,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 11:06:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2022-11-20 11:06:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-20 11:06:07,005 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2022-11-20 11:06:07,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:07,005 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-20 11:06:07,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-20 11:06:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:06:07,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:07,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:07,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:07,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:06:07,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:07,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash 859342364, now seen corresponding path program 2 times [2022-11-20 11:06:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:07,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818228816] [2022-11-20 11:06:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:07,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:07,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728423784] [2022-11-20 11:06:07,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:07,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:07,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:07,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:06:07,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:06:07,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:07,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:06:07,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:07,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:07,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:07,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818228816] [2022-11-20 11:06:07,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:07,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728423784] [2022-11-20 11:06:07,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728423784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:07,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:07,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 11:06:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714463519] [2022-11-20 11:06:07,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:06:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:06:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:06:07,460 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:07,669 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2022-11-20 11:06:07,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:06:07,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 [2022-11-20 11:06:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:07,670 INFO L225 Difference]: With dead ends: 86 [2022-11-20 11:06:07,670 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 11:06:07,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:06:07,671 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:07,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 54 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 11:06:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 42. [2022-11-20 11:06:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:07,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-20 11:06:07,681 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 22 [2022-11-20 11:06:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:07,681 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-20 11:06:07,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-20 11:06:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:06:07,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:07,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:07,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:07,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:06:07,887 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash 803751580, now seen corresponding path program 3 times [2022-11-20 11:06:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:07,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711726827] [2022-11-20 11:06:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:07,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:07,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:07,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584337013] [2022-11-20 11:06:07,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:06:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:08,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:08,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:06:08,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:06:08,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:08,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:06:08,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:08,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:08,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:08,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711726827] [2022-11-20 11:06:08,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584337013] [2022-11-20 11:06:08,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584337013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:08,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:08,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 11:06:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130515796] [2022-11-20 11:06:08,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:06:08,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:06:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:06:08,451 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:08,660 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2022-11-20 11:06:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:06:08,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 [2022-11-20 11:06:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:08,661 INFO L225 Difference]: With dead ends: 71 [2022-11-20 11:06:08,661 INFO L226 Difference]: Without dead ends: 60 [2022-11-20 11:06:08,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:06:08,662 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:08,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 52 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:06:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-20 11:06:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2022-11-20 11:06:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-11-20 11:06:08,678 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 22 [2022-11-20 11:06:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:08,678 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-11-20 11:06:08,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:08,679 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-11-20 11:06:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:06:08,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:08,685 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:08,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:06:08,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2022-11-20 11:06:08,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:08,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621069277] [2022-11-20 11:06:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:08,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:08,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388648840] [2022-11-20 11:06:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:08,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:08,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:08,948 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:08,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:06:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:09,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 11:06:09,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:09,874 INFO L321 Elim1Store]: treesize reduction 252, result has 37.8 percent of original size [2022-11-20 11:06:09,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 226 treesize of output 790 [2022-11-20 11:06:09,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-11-20 11:06:09,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 11:06:10,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 11:06:10,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-20 11:06:10,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:10,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:10,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 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 173 treesize of output 636 [2022-11-20 11:06:11,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,209 INFO L217 Elim1Store]: Index analysis took 347 ms [2022-11-20 11:06:11,399 INFO L321 Elim1Store]: treesize reduction 120, result has 12.4 percent of original size [2022-11-20 11:06:11,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 22 case distinctions, treesize of input 225 treesize of output 700 [2022-11-20 11:06:11,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:11,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 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 147 treesize of output 389 [2022-11-20 11:06:12,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:12,128 INFO L217 Elim1Store]: Index analysis took 171 ms [2022-11-20 11:06:12,236 INFO L321 Elim1Store]: treesize reduction 164, result has 9.4 percent of original size [2022-11-20 11:06:12,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 19 case distinctions, treesize of input 199 treesize of output 455 [2022-11-20 11:06:15,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 3085 treesize of output 2796 [2022-11-20 11:06:16,362 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:06:16,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 3 [2022-11-20 11:06:16,649 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:06:16,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 3 [2022-11-20 11:06:17,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:17,514 INFO L321 Elim1Store]: treesize reduction 97, result has 32.2 percent of original size [2022-11-20 11:06:17,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1396 treesize of output 1368 [2022-11-20 11:06:17,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:17,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,663 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-20 11:06:18,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 60 [2022-11-20 11:06:18,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:18,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 60 [2022-11-20 11:06:18,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:18,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:19,316 INFO L321 Elim1Store]: treesize reduction 40, result has 52.9 percent of original size [2022-11-20 11:06:19,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 750 treesize of output 1042 [2022-11-20 11:06:19,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:20,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:20,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:20,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:20,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:20,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 190 treesize of output 370 [2022-11-20 11:06:20,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:20,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:20,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:20,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 190 treesize of output 370 [2022-11-20 11:06:21,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:21,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:21,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:21,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:21,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:21,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:21,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 370 [2022-11-20 11:06:22,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 72 [2022-11-20 11:06:22,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 7 [2022-11-20 11:06:22,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 35 [2022-11-20 11:06:22,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,494 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 63 treesize of output 1 [2022-11-20 11:06:22,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 7 [2022-11-20 11:06:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:22,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 35 [2022-11-20 11:06:22,793 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:06:22,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 11:06:22,851 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse9 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse58 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse0 (not .cse58)) (.cse1 (not .cse9)) (.cse28 (not .cse3))) (and .cse0 (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) .cse1 (let ((.cse31 (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse32 (select .cse31 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse30 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse29 (= (select .cse30 |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (.cse2 (= c_~N~0 .cse32))) (or (and .cse2 .cse3 (or (and (exists ((v_prenex_109 (Array Int Int)) (v_arrayElimArr_14 (Array Int Int)) (v_prenex_174 (Array Int Int)) (v_prenex_175 (Array Int Int)) (v_prenex_110 (Array Int Int)) (v_prenex_111 (Array Int Int)) (v_prenex_146 (Array Int Int)) (v_prenex_147 (Array Int Int))) (let ((.cse8 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_147) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_146) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_147) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_146) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14)) (.cse7 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_110) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_111) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_109) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_110) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_111) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_109))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse5 (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse6 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_175) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_174) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_175) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_174) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14))) (and (= (select .cse4 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= .cse5 .cse4) (= v_prenex_174 (select .cse6 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_prenex_110 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.base|)) (= c_~N~0 (select v_arrayElimArr_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= v_prenex_147 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_prenex_111 .cse4) (= .cse5 v_prenex_146) (= (select .cse6 |c_ULTIMATE.start_main_~a~0#1.base|) v_prenex_175))))) .cse9) (and (exists ((v_DerPreprocessor_26 (Array Int Int)) (v_DerPreprocessor_24 (Array Int Int)) (v_DerPreprocessor_25 (Array Int Int))) (let ((.cse10 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_24) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_25) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_26) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_24) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_25) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_26))) (and (= c_~N~0 (select v_DerPreprocessor_26 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= v_DerPreprocessor_25 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_24 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.base|))))) (exists ((v_DerPreprocessor_40 (Array Int Int)) (v_arrayElimArr_14 (Array Int Int)) (v_DerPreprocessor_37 (Array Int Int)) (v_DerPreprocessor_39 (Array Int Int)) (v_DerPreprocessor_36 (Array Int Int))) (let ((.cse12 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_36) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_37) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_36) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_37) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14)) (.cse11 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_39) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_40) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_39) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_40) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14))) (and (= v_DerPreprocessor_39 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_36 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|)) (= c_~N~0 (select v_arrayElimArr_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= v_DerPreprocessor_37 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_40 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|))))) .cse9) (exists ((v_arrayElimArr_14 (Array Int Int))) (and (exists ((v_prenex_176 (Array Int Int)) (v_prenex_144 (Array Int Int)) (v_prenex_177 (Array Int Int)) (v_prenex_145 (Array Int Int)) (v_prenex_103 (Array Int Int)) (v_prenex_104 (Array Int Int)) (v_prenex_105 (Array Int Int))) (let ((.cse19 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_177) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_176) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_177) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_176) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14)) (.cse18 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_104) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_105) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_103) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_104) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_105) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_103)) (.cse17 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_145) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_144) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_145) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_144) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14))) (let ((.cse15 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse14 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse13 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse13 .cse14) (= .cse14 .cse15) (= .cse16 .cse14) (= c_~N~0 (select v_prenex_103 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= (select .cse17 |c_ULTIMATE.start_main_~b~0#1.base|) v_prenex_144) (= v_prenex_145 .cse15) (= (select .cse18 |c_ULTIMATE.start_main_~b~0#1.base|) v_prenex_105) (= (select .cse19 |c_ULTIMATE.start_main_~b~0#1.base|) v_prenex_176) (= .cse14 v_prenex_104) (= .cse13 v_prenex_177))))) (= c_~N~0 (select v_arrayElimArr_14 |c_ULTIMATE.start_main_~c~0#1.offset|)))) (exists ((v_arrayElimArr_14 (Array Int Int))) (and (= c_~N~0 (select v_arrayElimArr_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (exists ((v_prenex_107 (Array Int Int)) (v_prenex_108 (Array Int Int)) (v_prenex_172 (Array Int Int)) (v_prenex_173 (Array Int Int)) (v_prenex_148 (Array Int Int)) (v_prenex_149 (Array Int Int)) (v_prenex_106 (Array Int Int))) (let ((.cse27 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_149) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_148) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_149) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_148) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14)) (.cse26 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_107) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_108) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_106) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_107) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_108) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_106)) (.cse20 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_173) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_172) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_173) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_172) |c_ULTIMATE.start_main_~c~0#1.base| v_arrayElimArr_14))) (let ((.cse25 (select .cse20 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse24 (select .cse26 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse23 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse22 (select .cse27 |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse21 (select .cse26 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= (select .cse20 |c_ULTIMATE.start_main_~b~0#1.base|) v_prenex_172) (= .cse21 v_prenex_108) (= v_prenex_148 .cse22) (= .cse23 v_prenex_149) (= .cse24 v_prenex_107) (= v_prenex_173 .cse25) (= .cse24 .cse16) (= .cse24 .cse25) (= .cse24 .cse23) (= .cse21 .cse22) (= (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))))) (and .cse28 (or (and .cse29 .cse1 (or (and .cse2 (exists ((v_DerPreprocessor_50 Int)) (= (select (store (store .cse30 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_50) |c_ULTIMATE.start_main_~c~0#1.offset| c_~N~0) |c_ULTIMATE.start_main_~b~0#1.offset|) v_DerPreprocessor_50))) (and .cse2 (= .cse31 (store (store .cse30 |c_ULTIMATE.start_main_~b~0#1.offset| (select .cse31 |c_ULTIMATE.start_main_~b~0#1.offset|)) |c_ULTIMATE.start_main_~c~0#1.offset| .cse32))))) (and .cse2 (exists ((v_DerPreprocessor_50 Int)) (= v_DerPreprocessor_50 (select (store (store .cse16 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_50) |c_ULTIMATE.start_main_~c~0#1.offset| c_~N~0) |c_ULTIMATE.start_main_~b~0#1.offset|))) .cse0 .cse1 (= .cse16 .cse30) (= (select .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (and .cse2 (exists ((v_DerPreprocessor_42 (Array Int Int)) (v_DerPreprocessor_43 (Array Int Int)) (v_DerPreprocessor_54 (Array Int Int)) (v_DerPreprocessor_55 (Array Int Int)) (v_DerPreprocessor_52 Int)) (let ((.cse35 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~c~0#1.base| .cse31) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~c~0#1.base| .cse31))) (let ((.cse33 (store (store (store (store (store (store (store (store (store (store (store (store .cse35 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_54) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~c~0#1.base| .cse31) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_54) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~c~0#1.base| .cse31) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_54) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~c~0#1.base| .cse31) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_54) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~c~0#1.base| .cse31)) (.cse34 (select .cse35 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= v_DerPreprocessor_54 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= v_DerPreprocessor_42 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.base|)) (= .cse30 (select .cse33 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_52 (select (store (store .cse34 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_52) |c_ULTIMATE.start_main_~c~0#1.offset| c_~N~0) |c_ULTIMATE.start_main_~b~0#1.offset|)))))) .cse29 .cse9))) (and (let ((.cse40 (exists ((v_DerPreprocessor_62 (Array Int Int))) (= c_~N~0 (select v_DerPreprocessor_62 |c_ULTIMATE.start_main_~c~0#1.offset|)))) (.cse51 (exists ((v_DerPreprocessor_48 Int)) (= v_DerPreprocessor_48 (select (store (store .cse30 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_48) |c_ULTIMATE.start_main_~c~0#1.offset| c_~N~0) |c_ULTIMATE.start_main_~b~0#1.offset|))))) (or (and (or (and .cse2 (exists ((v_DerPreprocessor_64 (Array Int Int)) (v_DerPreprocessor_65 (Array Int Int)) (v_DerPreprocessor_80 (Array Int Int)) (v_DerPreprocessor_81 (Array Int Int)) (v_DerPreprocessor_66 (Array Int Int)) (v_DerPreprocessor_57 (Array Int Int)) (v_DerPreprocessor_79 (Array Int Int))) (let ((.cse39 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse37 (store (store (store (store (store (store (store (store (store (store (store (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_79) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_80) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_81) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_79) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_80) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_81) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_79) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_80) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_81) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_79) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_80) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_81))) (let ((.cse36 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse38 (store (store (store (store (store (store (store (store (store (store (store (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_64) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_66) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_64) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_66) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_64) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_66) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_64) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_66))) (and (= c_~N~0 (select .cse36 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= v_DerPreprocessor_80 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= v_DerPreprocessor_65 (select .cse38 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_79 (select .cse37 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse38 |c_ULTIMATE.start_main_~a~0#1.base|) v_DerPreprocessor_64))))))) (and .cse2 (or .cse40 (exists ((v_DerPreprocessor_76 (Array Int Int)) (v_DerPreprocessor_60 (Array Int Int)) (v_DerPreprocessor_59 (Array Int Int)) (v_DerPreprocessor_77 (Array Int Int)) (v_DerPreprocessor_78 (Array Int Int)) (v_DerPreprocessor_57 (Array Int Int)) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse44 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse43 (store (store (store (store (store (store (store (store (store (store (store (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_76) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_77) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_78) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_76) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_77) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_78) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_76) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_77) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_78) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_76) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_77) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_78))) (let ((.cse42 (store (store (store (store (store (store (store (store (store (store (store (store .cse43 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60)) (.cse41 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= c_~N~0 (select .cse41 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= (select .cse42 |c_ULTIMATE.start_main_~b~0#1.base|) v_DerPreprocessor_59) (= v_DerPreprocessor_58 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_76 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= v_DerPreprocessor_77 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.base|)))))))))) .cse9) (and .cse2 .cse3 (or .cse40 (exists ((v_DerPreprocessor_91 (Array Int Int)) (v_DerPreprocessor_60 (Array Int Int)) (v_DerPreprocessor_59 (Array Int Int)) (v_DerPreprocessor_90 (Array Int Int)) (v_DerPreprocessor_89 (Array Int Int)) (v_DerPreprocessor_57 (Array Int Int)) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse48 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse46 (store (store (store (store (store (store (store (store (store (store (store (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_89) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_90) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_91) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_89) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_90) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_91) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_89) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_90) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_91) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_89) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_90) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_91))) (let ((.cse45 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse47 (store (store (store (store (store (store (store (store (store (store (store (store .cse46 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60))) (and (= c_~N~0 (select .cse45 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= v_DerPreprocessor_90 (select .cse46 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_89 (select .cse46 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse45 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= v_DerPreprocessor_59 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_58 (select .cse47 |c_ULTIMATE.start_main_~a~0#1.base|))))))))) (and .cse2 (= c_~N~0 (select .cse30 |c_ULTIMATE.start_main_~c~0#1.offset|)) (exists ((v_DerPreprocessor_95 (Array Int Int)) (v_DerPreprocessor_96 (Array Int Int)) (v_DerPreprocessor_92 (Array Int Int)) (v_DerPreprocessor_70 (Array Int Int)) (v_DerPreprocessor_93 (Array Int Int)) (v_DerPreprocessor_71 (Array Int Int)) (v_DerPreprocessor_94 (Array Int Int)) (v_DerPreprocessor_72 (Array Int Int))) (let ((.cse49 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_95) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_96) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_95) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_95) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_96) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_95))) (let ((.cse50 (store (store (store (store (store (store (store (store (store (store (store (store .cse49 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_92) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_93) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_94) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_92) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_93) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_94) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_92) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_93) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_94) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_92) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_93) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_94))) (and (= (select (select .cse49 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= v_DerPreprocessor_92 (select .cse50 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (store (store (store (store (store (store (store (store (store (store (store (store .cse50 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_70) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_71) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_72) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_70) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_71) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_72) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_70) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_71) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_72) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_70) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_71) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_72) |c_ULTIMATE.start_main_~a~0#1.base|) v_DerPreprocessor_70) (= (select (select .cse49 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0))))) .cse29 .cse51 .cse28) (and .cse2 .cse29 (or (and .cse51 (exists ((v_DerPreprocessor_86 (Array Int Int)) (v_DerPreprocessor_87 (Array Int Int)) (v_DerPreprocessor_82 (Array Int Int)) (v_DerPreprocessor_83 (Array Int Int)) (v_DerPreprocessor_88 (Array Int Int)) (v_DerPreprocessor_67 (Array Int Int)) (v_DerPreprocessor_68 (Array Int Int)) (v_DerPreprocessor_69 (Array Int Int))) (let ((.cse53 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_82) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_83) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_82) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_82) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_83) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_82))) (let ((.cse52 (store (store (store (store (store (store (store (store (store (store (store (store .cse53 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_86) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_87) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_88) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_86) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_87) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_88) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_86) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_87) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_88) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_86) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_87) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_88))) (and (= v_DerPreprocessor_67 (select (store (store (store (store (store (store (store (store (store (store (store (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_86 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select .cse53 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= c_~N~0 (select (select .cse53 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))))))) (exists ((v_DerPreprocessor_84 (Array Int Int)) (v_DerPreprocessor_85 (Array Int Int)) (v_DerPreprocessor_67 (Array Int Int)) (v_DerPreprocessor_68 (Array Int Int)) (v_DerPreprocessor_69 (Array Int Int))) (let ((.cse56 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_84) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_85) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_84) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_84) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_85) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_84))) (let ((.cse54 (select .cse56 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~c~0#1.offset|))) (and (= .cse54 (store (store .cse30 |c_ULTIMATE.start_main_~b~0#1.offset| (select .cse54 |c_ULTIMATE.start_main_~b~0#1.offset|)) |c_ULTIMATE.start_main_~c~0#1.offset| .cse55)) (= (select (store (store (store (store (store (store (store (store (store (store (store (store .cse56 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_68) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~a~0#1.base|) v_DerPreprocessor_67) (= .cse55 c_~N~0) (= (select (select .cse56 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))) .cse1) (and .cse2 .cse9 (exists ((v_DerPreprocessor_57 (Array Int Int))) (let ((.cse57 (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= c_~N~0 (select .cse57 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= (select .cse57 |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))) .cse58))))) .cse28))) is different from true [2022-11-20 11:06:22,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 85 [2022-11-20 11:06:23,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 11:06:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:23,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-11-20 11:06:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 11:06:23,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:24,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621069277] [2022-11-20 11:06:24,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:24,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388648840] [2022-11-20 11:06:24,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388648840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:24,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:24,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-11-20 11:06:24,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724052032] [2022-11-20 11:06:24,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:24,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:06:24,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:24,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:06:24,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=272, Unknown=9, NotChecked=34, Total=380 [2022-11-20 11:06:24,400 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:25,796 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-11-20 11:06:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:06:25,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 11:06:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:25,798 INFO L225 Difference]: With dead ends: 56 [2022-11-20 11:06:25,798 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 11:06:25,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=195, Invalid=611, Unknown=10, NotChecked=54, Total=870 [2022-11-20 11:06:25,800 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:25,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 127 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 152 Invalid, 0 Unknown, 133 Unchecked, 0.3s Time] [2022-11-20 11:06:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 11:06:25,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2022-11-20 11:06:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-20 11:06:25,810 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 24 [2022-11-20 11:06:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:25,811 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-20 11:06:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-20 11:06:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 11:06:25,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:25,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:25,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:26,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 4 times [2022-11-20 11:06:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595339122] [2022-11-20 11:06:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:26,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:26,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618736290] [2022-11-20 11:06:26,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:06:26,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:26,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:26,084 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:26,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:06:26,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:06:26,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:26,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:06:26,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:26,621 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-20 11:06:26,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2022-11-20 11:06:26,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:26,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:26,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:26,768 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-11-20 11:06:26,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 104 [2022-11-20 11:06:26,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:26,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:26,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:26,868 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-11-20 11:06:26,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 97 [2022-11-20 11:06:26,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:27,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:06:27,125 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-20 11:06:27,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 23 [2022-11-20 11:06:27,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:27,168 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:06:27,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 28 [2022-11-20 11:06:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,281 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:06:27,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 56 [2022-11-20 11:06:27,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:06:27,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:27,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:27,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:27,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-20 11:06:27,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 11:06:27,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 11:06:27,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:27,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:06:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:27,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:27,936 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_598 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_598) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-11-20 11:06:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-20 11:06:28,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:28,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595339122] [2022-11-20 11:06:28,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:28,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618736290] [2022-11-20 11:06:28,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618736290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:28,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:28,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-11-20 11:06:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644642774] [2022-11-20 11:06:28,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:06:28,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:06:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=220, Unknown=9, NotChecked=32, Total=342 [2022-11-20 11:06:28,059 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:30,716 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-11-20 11:06:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:06:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 11:06:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:30,718 INFO L225 Difference]: With dead ends: 80 [2022-11-20 11:06:30,718 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 11:06:30,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=212, Invalid=709, Unknown=13, NotChecked=58, Total=992 [2022-11-20 11:06:30,720 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:30,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 89 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 97 Invalid, 0 Unknown, 127 Unchecked, 0.2s Time] [2022-11-20 11:06:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 11:06:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2022-11-20 11:06:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-11-20 11:06:30,735 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 26 [2022-11-20 11:06:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:30,736 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-11-20 11:06:30,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-11-20 11:06:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:06:30,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:30,737 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:30,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:06:30,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -231193078, now seen corresponding path program 2 times [2022-11-20 11:06:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:30,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224465381] [2022-11-20 11:06:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:30,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:30,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793884122] [2022-11-20 11:06:30,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:30,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:30,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:30,981 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:31,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:06:31,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:06:31,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:31,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:06:31,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:06:31,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:06:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:31,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224465381] [2022-11-20 11:06:31,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:31,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793884122] [2022-11-20 11:06:31,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793884122] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:31,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:31,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 11:06:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306160089] [2022-11-20 11:06:31,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:31,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:06:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:06:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:06:31,335 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:31,592 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-11-20 11:06:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:06:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 11:06:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:31,594 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:06:31,594 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 11:06:31,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:06:31,595 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:31,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 62 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:06:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 11:06:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2022-11-20 11:06:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-20 11:06:31,609 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 28 [2022-11-20 11:06:31,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:31,610 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-20 11:06:31,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-20 11:06:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:06:31,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:31,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:31,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:31,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:31,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 3 times [2022-11-20 11:06:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:31,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736737151] [2022-11-20 11:06:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:31,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:31,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:31,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797034361] [2022-11-20 11:06:31,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:06:31,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:31,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:31,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:31,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:06:32,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:06:32,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:32,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-20 11:06:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:32,497 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:06:32,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 11:06:32,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:32,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:32,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:32,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-11-20 11:06:32,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:32,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:06:32,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 11:06:32,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 11:06:32,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 11:06:32,663 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 11:06:32,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2022-11-20 11:06:32,676 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 11:06:32,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 11:06:32,757 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 11:06:32,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2022-11-20 11:06:32,792 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 11:06:32,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 24 [2022-11-20 11:06:32,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2022-11-20 11:06:32,952 INFO L321 Elim1Store]: treesize reduction 153, result has 0.6 percent of original size [2022-11-20 11:06:32,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 175 [2022-11-20 11:06:32,963 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 11:06:33,124 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:06:33,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2022-11-20 11:06:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:33,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:06:37,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736737151] [2022-11-20 11:06:37,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:06:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797034361] [2022-11-20 11:06:37,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797034361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:37,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:06:37,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2022-11-20 11:06:37,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140143694] [2022-11-20 11:06:37,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:37,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:06:37,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:06:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=823, Unknown=1, NotChecked=0, Total=992 [2022-11-20 11:06:37,766 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:38,870 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2022-11-20 11:06:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:06:38,871 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 11:06:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:38,873 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:06:38,873 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 11:06:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=283, Invalid=1438, Unknown=1, NotChecked=0, Total=1722 [2022-11-20 11:06:38,875 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 88 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 96 Invalid, 0 Unknown, 149 Unchecked, 0.2s Time] [2022-11-20 11:06:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 11:06:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2022-11-20 11:06:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2) internal successors, (72), 60 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2022-11-20 11:06:38,891 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 30 [2022-11-20 11:06:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:38,891 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2022-11-20 11:06:38,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:06:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2022-11-20 11:06:38,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:06:38,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:38,893 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:38,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:39,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:39,100 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:06:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1792212012, now seen corresponding path program 5 times [2022-11-20 11:06:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:39,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92935794] [2022-11-20 11:06:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:39,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:06:39,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100285659] [2022-11-20 11:06:39,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:06:39,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:39,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:39,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:39,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:13:28,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 11:13:28,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:28,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:13:28,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:13:28,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:13:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92935794] [2022-11-20 11:13:28,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:13:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100285659] [2022-11-20 11:13:28,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100285659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:28,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:28,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 11:13:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802184351] [2022-11-20 11:13:28,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:28,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:13:28,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:13:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:13:28,639 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:28,932 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2022-11-20 11:13:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:13:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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 30 [2022-11-20 11:13:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:28,934 INFO L225 Difference]: With dead ends: 141 [2022-11-20 11:13:28,934 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 11:13:28,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:13:28,935 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 105 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:28,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 51 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:13:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 11:13:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 67. [2022-11-20 11:13:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 66 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-11-20 11:13:28,952 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 30 [2022-11-20 11:13:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:28,953 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-11-20 11:13:28,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-11-20 11:13:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:13:28,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:28,954 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:28,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:29,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:13:29,169 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash 505093188, now seen corresponding path program 4 times [2022-11-20 11:13:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:29,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378331002] [2022-11-20 11:13:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:29,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:13:29,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740746724] [2022-11-20 11:13:29,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:13:29,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:13:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:29,209 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:13:29,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:13:29,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:13:29,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:29,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-20 11:13:29,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:29,633 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:13:29,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 11:13:29,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2022-11-20 11:13:29,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2022-11-20 11:13:29,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 11:13:29,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:13:29,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:13:29,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:13:29,790 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:13:29,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 70 [2022-11-20 11:13:29,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 11:13:29,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-20 11:13:29,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:29,960 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:13:29,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 40 [2022-11-20 11:13:30,140 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:13:30,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 137 [2022-11-20 11:13:30,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:13:30,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-11-20 11:13:30,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 57 [2022-11-20 11:13:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,441 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:13:30,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 54 [2022-11-20 11:13:30,680 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:13:30,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 169 [2022-11-20 11:13:30,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:13:30,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 11:13:30,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:30,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 59 [2022-11-20 11:13:31,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:31,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:13:31,020 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 11:13:31,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 87 treesize of output 70 [2022-11-20 11:13:31,729 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 11:13:31,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 51 [2022-11-20 11:13:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:31,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:21,029 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:14:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:21,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378331002] [2022-11-20 11:14:21,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:14:21,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740746724] [2022-11-20 11:14:21,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740746724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:21,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:14:21,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 31 [2022-11-20 11:14:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061332812] [2022-11-20 11:14:21,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:14:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:14:21,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=805, Unknown=6, NotChecked=0, Total=930 [2022-11-20 11:14:21,062 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 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) [2022-11-20 11:14:44,036 WARN L233 SmtUtils]: Spent 9.74s on a formula simplification that was a NOOP. DAG size: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:14:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:56,671 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2022-11-20 11:14:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:14:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 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 34 [2022-11-20 11:14:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:56,673 INFO L225 Difference]: With dead ends: 111 [2022-11-20 11:14:56,674 INFO L226 Difference]: Without dead ends: 109 [2022-11-20 11:14:56,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 83.6s TimeCoverageRelationStatistics Valid=208, Invalid=1504, Unknown=10, NotChecked=0, Total=1722 [2022-11-20 11:14:56,675 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:56,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 113 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 124 Unchecked, 0.3s Time] [2022-11-20 11:14:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-20 11:14:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 86. [2022-11-20 11:14:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2022-11-20 11:14:56,711 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 34 [2022-11-20 11:14:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:56,711 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2022-11-20 11:14:56,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 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) [2022-11-20 11:14:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2022-11-20 11:14:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:14:56,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:56,713 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:56,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:56,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:14:56,921 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2083150320, now seen corresponding path program 6 times [2022-11-20 11:14:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144654004] [2022-11-20 11:14:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:56,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:14:56,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215700271] [2022-11-20 11:14:56,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:14:56,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:56,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:56,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:56,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:14:58,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 11:14:58,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:14:58,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:14:58,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:14:58,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:14:58,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:58,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144654004] [2022-11-20 11:14:58,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:14:58,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215700271] [2022-11-20 11:14:58,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215700271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:58,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:14:58,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-20 11:14:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616150737] [2022-11-20 11:14:58,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:58,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:14:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:14:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:14:58,332 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:59,157 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2022-11-20 11:14:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:14:59,158 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-20 11:14:59,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:59,159 INFO L225 Difference]: With dead ends: 201 [2022-11-20 11:14:59,159 INFO L226 Difference]: Without dead ends: 140 [2022-11-20 11:14:59,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:14:59,161 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 283 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:59,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 98 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:14:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-20 11:14:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 92. [2022-11-20 11:14:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 91 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2022-11-20 11:14:59,197 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 34 [2022-11-20 11:14:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:59,197 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2022-11-20 11:14:59,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2022-11-20 11:14:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:14:59,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:59,199 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:59,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:14:59,407 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -968725112, now seen corresponding path program 5 times [2022-11-20 11:14:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887162977] [2022-11-20 11:14:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:59,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:14:59,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40635876] [2022-11-20 11:14:59,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:14:59,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:59,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:59,461 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:59,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74ec4bf-5673-4bd2-803c-1e2d95615c83/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process