./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array17_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array17_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa --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 1bbdbab39b20ef0f9bb51ea0fb71bf773586866898cf5babc34262381f9b9103 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:44:49,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:44:49,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:44:49,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:44:49,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:44:49,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:44:49,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:44:49,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:44:49,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:44:49,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:44:49,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:44:49,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:44:49,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:44:49,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:44:49,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:44:49,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:44:49,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:44:49,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:44:49,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:44:49,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:44:49,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:44:49,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:44:49,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:44:49,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:44:49,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:44:49,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:44:49,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:44:49,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:44:49,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:44:49,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:44:49,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:44:49,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:44:49,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:44:49,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:44:49,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:44:49,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:44:49,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:44:49,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:44:49,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:44:49,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:44:49,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:44:49,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:44:49,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:44:49,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:44:49,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:44:49,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:44:49,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:44:49,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:44:49,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:44:49,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:44:49,210 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:44:49,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:44:49,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:44:49,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:44:49,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:44:49,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:44:49,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:44:49,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:44:49,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:44:49,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:44:49,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:44:49,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:44:49,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:44:49,214 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_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bbdbab39b20ef0f9bb51ea0fb71bf773586866898cf5babc34262381f9b9103 [2021-12-07 01:44:49,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:44:49,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:44:49,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:44:49,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:44:49,402 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:44:49,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-patterns/array17_pattern.c [2021-12-07 01:44:49,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/data/c7d997c42/457e3ac00a9b4d6287db7651f826e2c8/FLAG38ce1bbab [2021-12-07 01:44:49,822 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:44:49,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/sv-benchmarks/c/array-patterns/array17_pattern.c [2021-12-07 01:44:49,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/data/c7d997c42/457e3ac00a9b4d6287db7651f826e2c8/FLAG38ce1bbab [2021-12-07 01:44:49,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/data/c7d997c42/457e3ac00a9b4d6287db7651f826e2c8 [2021-12-07 01:44:49,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:44:49,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:44:49,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:44:49,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:44:49,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:44:49,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:44:49" (1/1) ... [2021-12-07 01:44:49,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7e9254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:49, skipping insertion in model container [2021-12-07 01:44:49,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:44:49" (1/1) ... [2021-12-07 01:44:49,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:44:49,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:44:49,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/sv-benchmarks/c/array-patterns/array17_pattern.c[1441,1454] [2021-12-07 01:44:49,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:44:49,988 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:44:49,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/sv-benchmarks/c/array-patterns/array17_pattern.c[1441,1454] [2021-12-07 01:44:50,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:44:50,016 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:44:50,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50 WrapperNode [2021-12-07 01:44:50,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:44:50,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:44:50,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:44:50,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:44:50,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,052 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2021-12-07 01:44:50,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:44:50,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:44:50,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:44:50,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:44:50,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:44:50,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:44:50,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:44:50,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:44:50,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (1/1) ... [2021-12-07 01:44:50,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:44:50,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:44:50,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:44:50,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:44:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:44:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 01:44:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 01:44:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:44:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:44:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:44:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:44:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:44:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:44:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:44:50,203 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:44:50,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:44:50,356 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:44:50,362 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:44:50,362 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-07 01:44:50,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:44:50 BoogieIcfgContainer [2021-12-07 01:44:50,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:44:50,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:44:50,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:44:50,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:44:50,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:44:49" (1/3) ... [2021-12-07 01:44:50,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351f522c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:44:50, skipping insertion in model container [2021-12-07 01:44:50,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:44:50" (2/3) ... [2021-12-07 01:44:50,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351f522c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:44:50, skipping insertion in model container [2021-12-07 01:44:50,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:44:50" (3/3) ... [2021-12-07 01:44:50,372 INFO L111 eAbstractionObserver]: Analyzing ICFG array17_pattern.c [2021-12-07 01:44:50,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:44:50,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:44:50,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:44:50,416 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:44:50,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:44:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:44:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 01:44:50,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:50,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:50,434 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:44:50,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2021-12-07 01:44:50,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:44:50,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249389829] [2021-12-07 01:44:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:50,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:44:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 01:44:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:44:50,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:44:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249389829] [2021-12-07 01:44:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249389829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:44:50,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:44:50,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:44:50,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105484366] [2021-12-07 01:44:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:44:50,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:44:50,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:44:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:44:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:44:50,596 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:44:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:50,613 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2021-12-07 01:44:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:44:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-07 01:44:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:50,620 INFO L225 Difference]: With dead ends: 63 [2021-12-07 01:44:50,620 INFO L226 Difference]: Without dead ends: 29 [2021-12-07 01:44:50,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:44:50,627 INFO L933 BasicCegarLoop]: 41 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, 41 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 [2021-12-07 01:44:50,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:44:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-07 01:44:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-07 01:44:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:44:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-07 01:44:50,659 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2021-12-07 01:44:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:50,660 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-07 01:44:50,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:44:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-07 01:44:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:44:50,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:50,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:50,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:44:50,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:44:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2021-12-07 01:44:50,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:44:50,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054816358] [2021-12-07 01:44:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:50,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:44:50,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:44:50,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976041542] [2021-12-07 01:44:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:50,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:50,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:44:50,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:44:50,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:44:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:50,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:44:50,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:44:50,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:44:50,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:44:50,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054816358] [2021-12-07 01:44:50,858 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:44:50,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976041542] [2021-12-07 01:44:50,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976041542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:44:50,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:44:50,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:44:50,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329771248] [2021-12-07 01:44:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:44:50,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:44:50,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:44:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:44:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:44:50,861 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:44:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:50,885 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-07 01:44:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:44:50,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-07 01:44:50,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:50,886 INFO L225 Difference]: With dead ends: 36 [2021-12-07 01:44:50,886 INFO L226 Difference]: Without dead ends: 32 [2021-12-07 01:44:50,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:44:50,888 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:50,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:44:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-07 01:44:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-07 01:44:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:44:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-07 01:44:50,894 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2021-12-07 01:44:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:50,895 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-07 01:44:50,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:44:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-07 01:44:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 01:44:50,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:50,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:50,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:44:51,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:51,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:44:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2021-12-07 01:44:51,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:44:51,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487414993] [2021-12-07 01:44:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:51,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:44:51,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:44:51,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164644481] [2021-12-07 01:44:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:51,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:44:51,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:44:51,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:44:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:51,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:44:51,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 01:44:51,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:44:51,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:44:51,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487414993] [2021-12-07 01:44:51,239 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:44:51,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164644481] [2021-12-07 01:44:51,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164644481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:44:51,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:44:51,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:44:51,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463675647] [2021-12-07 01:44:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:44:51,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:44:51,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:44:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:44:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:44:51,241 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:44:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:51,316 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2021-12-07 01:44:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:44:51,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-07 01:44:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:51,318 INFO L225 Difference]: With dead ends: 67 [2021-12-07 01:44:51,318 INFO L226 Difference]: Without dead ends: 42 [2021-12-07 01:44:51,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:44:51,320 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:51,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:44:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-07 01:44:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-12-07 01:44:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:44:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-07 01:44:51,328 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2021-12-07 01:44:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:51,328 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-07 01:44:51,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:44:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-07 01:44:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 01:44:51,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:51,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:51,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:44:51,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:51,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:44:51,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2021-12-07 01:44:51,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:44:51,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977181280] [2021-12-07 01:44:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:51,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:44:51,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:44:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423450706] [2021-12-07 01:44:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:51,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:51,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:44:51,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:44:51,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:44:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:51,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:44:51,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:44:51,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:44:51,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:44:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977181280] [2021-12-07 01:44:51,770 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:44:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423450706] [2021-12-07 01:44:51,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423450706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:44:51,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:44:51,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:44:51,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736257426] [2021-12-07 01:44:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:44:51,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:44:51,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:44:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:44:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:44:51,772 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:44:51,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:51,807 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-12-07 01:44:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:44:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-07 01:44:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:51,808 INFO L225 Difference]: With dead ends: 64 [2021-12-07 01:44:51,808 INFO L226 Difference]: Without dead ends: 36 [2021-12-07 01:44:51,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:44:51,810 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:51,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:44:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-07 01:44:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-12-07 01:44:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:44:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-07 01:44:51,815 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2021-12-07 01:44:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:51,815 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-07 01:44:51,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:44:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-07 01:44:51,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 01:44:51,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:51,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:51,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:44:52,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:52,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:44:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2021-12-07 01:44:52,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:44:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587889694] [2021-12-07 01:44:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:52,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:44:52,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:44:52,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032362695] [2021-12-07 01:44:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:44:52,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:44:52,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:44:52,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:44:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:52,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-07 01:44:52,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:52,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 39 [2021-12-07 01:44:52,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-07 01:44:52,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-07 01:44:52,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 60 [2021-12-07 01:44:52,654 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-12-07 01:44:52,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 01:44:52,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2021-12-07 01:44:52,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 196 treesize of output 185 [2021-12-07 01:44:52,862 INFO L354 Elim1Store]: treesize reduction 376, result has 8.1 percent of original size [2021-12-07 01:44:52,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 188 treesize of output 215 [2021-12-07 01:44:52,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2021-12-07 01:44:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:44:52,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 20 [2021-12-07 01:44:52,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:44:52,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 9 [2021-12-07 01:44:53,126 INFO L354 Elim1Store]: treesize reduction 23, result has 11.5 percent of original size [2021-12-07 01:44:53,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 26 [2021-12-07 01:44:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:44:53,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:35,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:35,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587889694] [2021-12-07 01:45:35,376 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:35,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032362695] [2021-12-07 01:45:35,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032362695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:45:35,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:45:35,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-12-07 01:45:35,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104769357] [2021-12-07 01:45:35,377 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:35,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 01:45:35,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 01:45:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=692, Unknown=2, NotChecked=0, Total=812 [2021-12-07 01:45:35,378 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:45:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:40,345 INFO L93 Difference]: Finished difference Result 96 states and 122 transitions. [2021-12-07 01:45:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:45:40,346 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-12-07 01:45:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:40,347 INFO L225 Difference]: With dead ends: 96 [2021-12-07 01:45:40,347 INFO L226 Difference]: Without dead ends: 71 [2021-12-07 01:45:40,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=191, Invalid=1137, Unknown=4, NotChecked=0, Total=1332 [2021-12-07 01:45:40,349 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:40,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 273 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 170 Invalid, 0 Unknown, 186 Unchecked, 0.2s Time] [2021-12-07 01:45:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-07 01:45:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2021-12-07 01:45:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 01:45:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2021-12-07 01:45:40,357 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 40 [2021-12-07 01:45:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:40,357 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2021-12-07 01:45:40,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:45:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2021-12-07 01:45:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 01:45:40,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:40,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:40,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:45:40,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:40,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -700801737, now seen corresponding path program 1 times [2021-12-07 01:45:40,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:40,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742881706] [2021-12-07 01:45:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:40,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:40,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:40,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710451335] [2021-12-07 01:45:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:40,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:40,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:40,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:40,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:45:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:45:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 01:45:40,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:45:40,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742881706] [2021-12-07 01:45:40,649 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710451335] [2021-12-07 01:45:40,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710451335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:40,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:40,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:40,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189688492] [2021-12-07 01:45:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:40,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:45:40,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:45:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:40,650 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:45:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:40,664 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2021-12-07 01:45:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:45:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-07 01:45:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:40,666 INFO L225 Difference]: With dead ends: 95 [2021-12-07 01:45:40,666 INFO L226 Difference]: Without dead ends: 72 [2021-12-07 01:45:40,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:40,667 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:40,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-07 01:45:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2021-12-07 01:45:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.24) internal successors, (62), 50 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 01:45:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2021-12-07 01:45:40,673 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 40 [2021-12-07 01:45:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:40,673 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2021-12-07 01:45:40,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:45:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2021-12-07 01:45:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 01:45:40,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:40,675 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:40,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-07 01:45:40,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:40,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:40,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2021-12-07 01:45:40,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:40,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705207697] [2021-12-07 01:45:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:40,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:40,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:40,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395547018] [2021-12-07 01:45:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:40,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:40,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:40,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:40,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:45:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:40,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 01:45:40,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:45:41,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 01:45:41,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705207697] [2021-12-07 01:45:41,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395547018] [2021-12-07 01:45:41,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395547018] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:41,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:41,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-12-07 01:45:41,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173258925] [2021-12-07 01:45:41,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:41,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 01:45:41,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:41,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 01:45:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:45:41,326 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-07 01:45:41,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:41,626 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-12-07 01:45:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:45:41,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2021-12-07 01:45:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:41,628 INFO L225 Difference]: With dead ends: 167 [2021-12-07 01:45:41,628 INFO L226 Difference]: Without dead ends: 142 [2021-12-07 01:45:41,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:45:41,630 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 123 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:41,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 179 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:45:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-07 01:45:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-12-07 01:45:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 01:45:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2021-12-07 01:45:41,640 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 40 [2021-12-07 01:45:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:41,640 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2021-12-07 01:45:41,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-07 01:45:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2021-12-07 01:45:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 01:45:41,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:41,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:41,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:45:41,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:41,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2021-12-07 01:45:41,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:41,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65655333] [2021-12-07 01:45:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:41,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:41,868 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:41,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307641027] [2021-12-07 01:45:41,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:45:41,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:41,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:41,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:41,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:45:41,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:45:41,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:41,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:45:41,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:45:41,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:45:42,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65655333] [2021-12-07 01:45:42,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307641027] [2021-12-07 01:45:42,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307641027] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:42,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:42,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-07 01:45:42,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333797044] [2021-12-07 01:45:42,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:42,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:45:42,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:45:42,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:42,020 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:42,127 INFO L93 Difference]: Finished difference Result 171 states and 204 transitions. [2021-12-07 01:45:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:45:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-07 01:45:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:42,129 INFO L225 Difference]: With dead ends: 171 [2021-12-07 01:45:42,129 INFO L226 Difference]: Without dead ends: 137 [2021-12-07 01:45:42,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:45:42,130 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 92 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:42,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 148 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:45:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-07 01:45:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2021-12-07 01:45:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 86 states have internal predecessors, (99), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 01:45:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-12-07 01:45:42,140 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 42 [2021-12-07 01:45:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:42,140 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-12-07 01:45:42,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-12-07 01:45:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 01:45:42,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:42,141 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:42,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-07 01:45:42,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-07 01:45:42,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2021-12-07 01:45:42,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:42,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663680887] [2021-12-07 01:45:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:42,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:42,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:42,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408918211] [2021-12-07 01:45:42,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:45:42,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:42,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:42,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:42,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:45:42,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:45:42,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:42,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-07 01:45:42,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:42,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 176 treesize of output 167 [2021-12-07 01:45:42,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 178 [2021-12-07 01:45:42,605 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:45:42,618 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:45:42,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 3 [2021-12-07 01:45:42,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2021-12-07 01:45:42,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 3 [2021-12-07 01:45:42,808 INFO L354 Elim1Store]: treesize reduction 59, result has 39.2 percent of original size [2021-12-07 01:45:42,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 60 [2021-12-07 01:45:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 01:45:43,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:43,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 165 [2021-12-07 01:45:43,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:45:43,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 165 treesize of output 178 [2021-12-07 01:45:43,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 4 [2021-12-07 01:45:43,654 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-07 01:45:43,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 4 [2021-12-07 01:45:43,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 4 [2021-12-07 01:45:43,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:45:43,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 42 [2021-12-07 01:45:44,020 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:45:44,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 94 treesize of output 96 [2021-12-07 01:45:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 01:45:49,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:49,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663680887] [2021-12-07 01:45:49,776 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:49,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408918211] [2021-12-07 01:45:49,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408918211] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:49,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:49,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2021-12-07 01:45:49,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137243562] [2021-12-07 01:45:49,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:49,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 01:45:49,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 01:45:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:45:49,777 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-07 01:45:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:55,711 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2021-12-07 01:45:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:45:55,712 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2021-12-07 01:45:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:55,713 INFO L225 Difference]: With dead ends: 129 [2021-12-07 01:45:55,713 INFO L226 Difference]: Without dead ends: 125 [2021-12-07 01:45:55,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=299, Invalid=1507, Unknown=0, NotChecked=0, Total=1806 [2021-12-07 01:45:55,714 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:55,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 142 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 281 Invalid, 0 Unknown, 148 Unchecked, 0.6s Time] [2021-12-07 01:45:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-07 01:45:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2021-12-07 01:45:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 88 states have internal predecessors, (101), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 01:45:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-12-07 01:45:55,725 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 42 [2021-12-07 01:45:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:55,725 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-12-07 01:45:55,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-07 01:45:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-12-07 01:45:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 01:45:55,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:55,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:55,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:45:55,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:55,928 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:55,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:55,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 2 times [2021-12-07 01:45:55,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:55,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261255193] [2021-12-07 01:45:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:55,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:55,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930192377] [2021-12-07 01:45:55,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:45:55,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:55,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:55,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:55,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:45:56,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:45:56,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:56,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:45:56,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:45:56,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 01:45:56,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:56,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261255193] [2021-12-07 01:45:56,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:56,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930192377] [2021-12-07 01:45:56,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930192377] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:56,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:56,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-07 01:45:56,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354822237] [2021-12-07 01:45:56,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:56,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:45:56,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:45:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:45:56,144 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:56,256 INFO L93 Difference]: Finished difference Result 168 states and 202 transitions. [2021-12-07 01:45:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:45:56,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-07 01:45:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:56,258 INFO L225 Difference]: With dead ends: 168 [2021-12-07 01:45:56,258 INFO L226 Difference]: Without dead ends: 127 [2021-12-07 01:45:56,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:45:56,259 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:56,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 94 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:45:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-07 01:45:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2021-12-07 01:45:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 99 states have internal predecessors, (115), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 01:45:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-12-07 01:45:56,273 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 42 [2021-12-07 01:45:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:56,273 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-12-07 01:45:56,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-12-07 01:45:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-07 01:45:56,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:56,274 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:56,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:45:56,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:45:56,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2021-12-07 01:45:56,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:56,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661268988] [2021-12-07 01:45:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:56,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:56,502 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:56,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872653545] [2021-12-07 01:45:56,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:45:56,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:56,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:56,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:56,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:45:56,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:45:56,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:56,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:45:56,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:45:56,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 01:45:56,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661268988] [2021-12-07 01:45:56,637 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872653545] [2021-12-07 01:45:56,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872653545] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:56,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-07 01:45:56,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397832724] [2021-12-07 01:45:56,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:56,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:45:56,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:45:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:56,638 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:56,739 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-12-07 01:45:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:45:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-12-07 01:45:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:56,740 INFO L225 Difference]: With dead ends: 130 [2021-12-07 01:45:56,740 INFO L226 Difference]: Without dead ends: 75 [2021-12-07 01:45:56,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:45:56,741 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:56,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 123 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:45:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-07 01:45:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2021-12-07 01:45:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:45:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-12-07 01:45:56,746 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 45 [2021-12-07 01:45:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:56,747 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-12-07 01:45:56,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-12-07 01:45:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-07 01:45:56,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:56,747 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:56,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 01:45:56,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:56,949 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 3 times [2021-12-07 01:45:56,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:56,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527775415] [2021-12-07 01:45:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:56,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:56,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:56,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108303106] [2021-12-07 01:45:56,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:45:56,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:56,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:56,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:56,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:45:57,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:45:57,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:57,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 01:45:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-07 01:45:57,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-07 01:45:57,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:57,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527775415] [2021-12-07 01:45:57,390 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:57,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108303106] [2021-12-07 01:45:57,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108303106] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:57,390 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:57,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2021-12-07 01:45:57,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969741619] [2021-12-07 01:45:57,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:57,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-07 01:45:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-07 01:45:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-07 01:45:57,391 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-07 01:45:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:57,618 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2021-12-07 01:45:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:45:57,619 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-12-07 01:45:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:57,620 INFO L225 Difference]: With dead ends: 127 [2021-12-07 01:45:57,620 INFO L226 Difference]: Without dead ends: 123 [2021-12-07 01:45:57,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-12-07 01:45:57,621 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 136 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:57,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 144 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:45:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-07 01:45:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 64. [2021-12-07 01:45:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:45:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-12-07 01:45:57,626 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 49 [2021-12-07 01:45:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:57,627 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-12-07 01:45:57,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-07 01:45:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-12-07 01:45:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-07 01:45:57,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:57,627 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:57,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:45:57,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:57,829 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:57,830 INFO L85 PathProgramCache]: Analyzing trace with hash 538416053, now seen corresponding path program 5 times [2021-12-07 01:45:57,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:57,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761290756] [2021-12-07 01:45:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:57,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:57,862 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:57,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588227918] [2021-12-07 01:45:57,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:45:57,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:57,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:57,866 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:57,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:45:57,945 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-07 01:45:57,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:57,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:45:57,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:45:58,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-07 01:45:58,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:58,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761290756] [2021-12-07 01:45:58,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:45:58,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588227918] [2021-12-07 01:45:58,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588227918] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:58,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:45:58,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-07 01:45:58,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871695070] [2021-12-07 01:45:58,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:58,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:45:58,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:45:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:58,083 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:58,206 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-12-07 01:45:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:45:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-12-07 01:45:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:58,206 INFO L225 Difference]: With dead ends: 71 [2021-12-07 01:45:58,207 INFO L226 Difference]: Without dead ends: 60 [2021-12-07 01:45:58,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:45:58,207 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 58 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:58,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 74 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:45:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-07 01:45:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-12-07 01:45:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:45:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2021-12-07 01:45:58,212 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 54 [2021-12-07 01:45:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:58,212 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2021-12-07 01:45:58,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:45:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2021-12-07 01:45:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-07 01:45:58,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:58,213 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:58,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-07 01:45:58,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:45:58,415 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:58,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2021-12-07 01:45:58,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:58,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548215875] [2021-12-07 01:45:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:58,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:58,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:45:58,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842131665] [2021-12-07 01:45:58,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:45:58,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:58,431 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:58,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:45:59,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-07 01:45:59,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:59,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-07 01:45:59,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:59,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 54 treesize of output 49 [2021-12-07 01:45:59,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-12-07 01:45:59,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-12-07 01:45:59,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 77 treesize of output 70 [2021-12-07 01:45:59,833 INFO L354 Elim1Store]: treesize reduction 136, result has 18.6 percent of original size [2021-12-07 01:45:59,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 69 treesize of output 91 [2021-12-07 01:45:59,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:45:59,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-12-07 01:45:59,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:45:59,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 24 [2021-12-07 01:46:00,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 69 [2021-12-07 01:46:00,098 INFO L354 Elim1Store]: treesize reduction 188, result has 13.4 percent of original size [2021-12-07 01:46:00,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 92 [2021-12-07 01:46:00,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 21 [2021-12-07 01:46:00,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 70 [2021-12-07 01:46:00,304 INFO L354 Elim1Store]: treesize reduction 272, result has 15.8 percent of original size [2021-12-07 01:46:00,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 69 treesize of output 107 [2021-12-07 01:46:00,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:00,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2021-12-07 01:46:13,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 105 treesize of output 92 [2021-12-07 01:46:14,218 INFO L354 Elim1Store]: treesize reduction 455, result has 21.6 percent of original size [2021-12-07 01:46:14,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 91 treesize of output 194 [2021-12-07 01:46:14,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:46:14,956 INFO L354 Elim1Store]: treesize reduction 181, result has 10.0 percent of original size [2021-12-07 01:46:14,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 364 treesize of output 292 [2021-12-07 01:46:19,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 386 treesize of output 351 [2021-12-07 01:46:23,253 INFO L354 Elim1Store]: treesize reduction 1471, result has 18.3 percent of original size [2021-12-07 01:46:23,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 354 treesize of output 588 [2021-12-07 01:46:24,043 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:46:24,353 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:46:30,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:30,720 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-12-07 01:46:30,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 860 treesize of output 738 [2021-12-07 01:46:31,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:46:31,714 INFO L354 Elim1Store]: treesize reduction 149, result has 17.2 percent of original size [2021-12-07 01:46:31,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 867 treesize of output 770 [2021-12-07 01:46:32,593 INFO L354 Elim1Store]: treesize reduction 323, result has 11.7 percent of original size [2021-12-07 01:46:32,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 750 treesize of output 551 [2021-12-07 01:47:44,545 INFO L354 Elim1Store]: treesize reduction 1192, result has 19.0 percent of original size [2021-12-07 01:47:44,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 651 treesize of output 491 [2021-12-07 01:48:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:48:25,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:22,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:49:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548215875] [2021-12-07 01:49:22,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:49:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842131665] [2021-12-07 01:49:22,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842131665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:49:22,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:49:22,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-12-07 01:49:22,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197091378] [2021-12-07 01:49:22,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:22,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-07 01:49:22,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:49:22,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-07 01:49:22,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2550, Unknown=38, NotChecked=0, Total=2970 [2021-12-07 01:49:22,818 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:49:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:22,871 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-12-07 01:49:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-07 01:49:22,872 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2021-12-07 01:49:22,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:22,873 INFO L225 Difference]: With dead ends: 98 [2021-12-07 01:49:22,873 INFO L226 Difference]: Without dead ends: 94 [2021-12-07 01:49:22,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 113.7s TimeCoverageRelationStatistics Valid=382, Invalid=2550, Unknown=38, NotChecked=0, Total=2970 [2021-12-07 01:49:22,874 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:22,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 343 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 267 Unchecked, 0.0s Time] [2021-12-07 01:49:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-07 01:49:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2021-12-07 01:49:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 81 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 01:49:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-12-07 01:49:22,884 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 58 [2021-12-07 01:49:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:22,884 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-12-07 01:49:22,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:49:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-12-07 01:49:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-07 01:49:22,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:22,885 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:22,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 01:49:23,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:49:23,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:49:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1758184689, now seen corresponding path program 4 times [2021-12-07 01:49:23,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:49:23,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985254638] [2021-12-07 01:49:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:49:23,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:49:23,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:49:23,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333827269] [2021-12-07 01:49:23,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:49:23,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:49:23,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:49:23,113 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:49:23,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675d64b5-9b92-47d0-a00e-85f8048c001a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 01:49:24,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:49:24,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:49:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-07 01:49:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:49:24,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 55 [2021-12-07 01:49:24,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-07 01:49:24,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-07 01:49:24,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 68 [2021-12-07 01:49:24,263 INFO L354 Elim1Store]: treesize reduction 124, result has 17.9 percent of original size [2021-12-07 01:49:24,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 67 treesize of output 87 [2021-12-07 01:49:24,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2021-12-07 01:49:24,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-12-07 01:49:24,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 97 treesize of output 88 [2021-12-07 01:49:24,532 INFO L354 Elim1Store]: treesize reduction 321, result has 17.3 percent of original size [2021-12-07 01:49:24,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 130 [2021-12-07 01:49:24,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 47 [2021-12-07 01:49:24,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 79 treesize of output 68 [2021-12-07 01:49:24,749 INFO L354 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2021-12-07 01:49:24,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 67 treesize of output 103 [2021-12-07 01:49:24,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:24,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2021-12-07 01:49:37,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 133 treesize of output 116 [2021-12-07 01:49:37,624 INFO L354 Elim1Store]: treesize reduction 572, result has 22.5 percent of original size [2021-12-07 01:49:37,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 115 treesize of output 235 [2021-12-07 01:49:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,708 INFO L354 Elim1Store]: treesize reduction 127, result has 43.0 percent of original size [2021-12-07 01:49:37,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 120 treesize of output 164 [2021-12-07 01:49:37,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 46 [2021-12-07 01:49:37,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:37,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 66 [2021-12-07 01:49:38,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:38,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 66 [2021-12-07 01:49:38,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 293 treesize of output 272 [2021-12-07 01:49:42,667 INFO L354 Elim1Store]: treesize reduction 1847, result has 21.2 percent of original size [2021-12-07 01:49:42,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 37 case distinctions, treesize of input 275 treesize of output 716 [2021-12-07 01:49:42,874 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:49:44,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:49:45,944 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:49:46,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:46,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 150 [2021-12-07 01:49:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:47,488 INFO L244 Elim1Store]: Index analysis took 119 ms [2021-12-07 01:49:47,503 INFO L354 Elim1Store]: treesize reduction 119, result has 0.8 percent of original size [2021-12-07 01:49:47,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 130 [2021-12-07 01:49:47,898 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:49:48,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 150 [2021-12-07 01:49:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:48,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:49,199 INFO L354 Elim1Store]: treesize reduction 192, result has 21.0 percent of original size [2021-12-07 01:49:49,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 257 treesize of output 203 [2021-12-07 01:49:50,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:49:50,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:50,340 INFO L244 Elim1Store]: Index analysis took 123 ms [2021-12-07 01:49:50,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 130 [2021-12-07 01:49:51,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:51,326 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-12-07 01:49:51,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 247 treesize of output 162 [2021-12-07 01:49:51,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:49:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 162 [2021-12-07 01:49:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:52,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 160 [2021-12-07 01:49:54,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:49:54,279 INFO L244 Elim1Store]: Index analysis took 279 ms [2021-12-07 01:49:54,928 INFO L354 Elim1Store]: treesize reduction 157, result has 35.4 percent of original size [2021-12-07 01:49:54,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 292 treesize of output 271 [2021-12-07 01:50:00,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:00,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:00,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:00,178 INFO L354 Elim1Store]: treesize reduction 487, result has 4.1 percent of original size [2021-12-07 01:50:00,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1443 treesize of output 1014 [2021-12-07 01:51:06,663 WARN L227 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 619 DAG size of output: 431 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-07 01:51:06,667 INFO L354 Elim1Store]: treesize reduction 1820, result has 61.4 percent of original size [2021-12-07 01:51:06,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 1065 treesize of output 3544