./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0 --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 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:21:09,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:21:10,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:21:10,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:21:10,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:21:10,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:21:10,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:21:10,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:21:10,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:21:10,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:21:10,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:21:10,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:21:10,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:21:10,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:21:10,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:21:10,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:21:10,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:21:10,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:21:10,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:21:10,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:21:10,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:21:10,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:21:10,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:21:10,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:21:10,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:21:10,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:21:10,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:21:10,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:21:10,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:21:10,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:21:10,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:21:10,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:21:10,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:21:10,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:21:10,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:21:10,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:21:10,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:21:10,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:21:10,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:21:10,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:21:10,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:21:10,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:21:10,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:21:10,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:21:10,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:21:10,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:21:10,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:21:10,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:21:10,245 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:21:10,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:21:10,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:21:10,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:21:10,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:21:10,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:21:10,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:21:10,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:21:10,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:21:10,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:21:10,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:21:10,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:21:10,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:21:10,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:21:10,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:21:10,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:21:10,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:21:10,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:21:10,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:21:10,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:21:10,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:21:10,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:21:10,253 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:21:10,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:21:10,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:21:10,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:21:10,256 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_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 [2021-11-22 16:21:10,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:21:10,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:21:10,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:21:10,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:21:10,674 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:21:10,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-fpi/ifeqn5.c [2021-11-22 16:21:10,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/data/df5aa11ce/447c74c1215b4e34a994d7ee12e6bee3/FLAGf6bc81797 [2021-11-22 16:21:11,367 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:21:11,368 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/sv-benchmarks/c/array-fpi/ifeqn5.c [2021-11-22 16:21:11,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/data/df5aa11ce/447c74c1215b4e34a994d7ee12e6bee3/FLAGf6bc81797 [2021-11-22 16:21:11,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/data/df5aa11ce/447c74c1215b4e34a994d7ee12e6bee3 [2021-11-22 16:21:11,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:21:11,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:21:11,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:21:11,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:21:11,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:21:11,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:21:11" (1/1) ... [2021-11-22 16:21:11,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a31728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:11, skipping insertion in model container [2021-11-22 16:21:11,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:21:11" (1/1) ... [2021-11-22 16:21:11,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:21:11,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:21:11,980 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_46bd438c-df44-4cc8-8c23-df42ac1f913e/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2021-11-22 16:21:12,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:21:12,021 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:21:12,035 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_46bd438c-df44-4cc8-8c23-df42ac1f913e/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2021-11-22 16:21:12,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:21:12,074 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:21:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12 WrapperNode [2021-11-22 16:21:12,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:21:12,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:21:12,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:21:12,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:21:12,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,147 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-22 16:21:12,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:21:12,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:21:12,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:21:12,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:21:12,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:21:12,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:21:12,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:21:12,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:21:12,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (1/1) ... [2021-11-22 16:21:12,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:21:12,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:12,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:21:12,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:21:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:21:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:21:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 16:21:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 16:21:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:21:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:21:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 16:21:12,381 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:21:12,383 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:21:12,556 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:21:12,564 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:21:12,564 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 16:21:12,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:21:12 BoogieIcfgContainer [2021-11-22 16:21:12,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:21:12,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:21:12,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:21:12,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:21:12,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:21:11" (1/3) ... [2021-11-22 16:21:12,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7290294b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:21:12, skipping insertion in model container [2021-11-22 16:21:12,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:21:12" (2/3) ... [2021-11-22 16:21:12,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7290294b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:21:12, skipping insertion in model container [2021-11-22 16:21:12,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:21:12" (3/3) ... [2021-11-22 16:21:12,577 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn5.c [2021-11-22 16:21:12,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:21:12,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:21:12,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:21:12,646 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 [2021-11-22 16:21:12,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:21:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 16:21:12,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:12,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:12,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:12,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-11-22 16:21:12,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:12,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130816109] [2021-11-22 16:21:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:12,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:21:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:12,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:12,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130816109] [2021-11-22 16:21:12,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130816109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:21:12,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:21:12,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:21:12,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873351149] [2021-11-22 16:21:12,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:21:12,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:21:12,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:21:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:21:12,900 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:12,920 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-11-22 16:21:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:21:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 16:21:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:12,931 INFO L225 Difference]: With dead ends: 42 [2021-11-22 16:21:12,931 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 16:21:12,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:21:12,939 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:12,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:21:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 16:21:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-22 16:21:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-22 16:21:12,978 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-11-22 16:21:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:12,979 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-22 16:21:12,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-22 16:21:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 16:21:12,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:12,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:12,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:21:12,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-11-22 16:21:12,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134014807] [2021-11-22 16:21:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:12,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:21:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:13,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:13,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134014807] [2021-11-22 16:21:13,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134014807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:21:13,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:21:13,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:21:13,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405713646] [2021-11-22 16:21:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:21:13,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:21:13,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:21:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:21:13,146 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:13,324 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-22 16:21:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:21:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 16:21:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:13,327 INFO L225 Difference]: With dead ends: 45 [2021-11-22 16:21:13,327 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 16:21:13,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:21:13,329 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:13,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:21:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 16:21:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-22 16:21:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-22 16:21:13,348 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-11-22 16:21:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:13,349 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-22 16:21:13,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-22 16:21:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 16:21:13,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:13,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:13,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:21:13,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:13,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-11-22 16:21:13,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:13,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929899936] [2021-11-22 16:21:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:13,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:13,400 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:21:13,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88987104] [2021-11-22 16:21:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:13,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:13,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:21:13,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:21:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:21:13,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:21:13,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:21:13,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 16:21:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:21:13,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:21:13,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929899936] [2021-11-22 16:21:13,686 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:21:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88987104] [2021-11-22 16:21:13,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88987104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:21:13,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:21:13,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:21:13,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348584772] [2021-11-22 16:21:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:21:13,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:21:13,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:21:13,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:21:13,690 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:13,781 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-11-22 16:21:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:21:13,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-22 16:21:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:13,784 INFO L225 Difference]: With dead ends: 40 [2021-11-22 16:21:13,784 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 16:21:13,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:21:13,786 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:13,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:21:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 16:21:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-11-22 16:21:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-22 16:21:13,795 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-11-22 16:21:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:13,796 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-22 16:21:13,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-22 16:21:13,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 16:21:13,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:13,798 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:13,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:21:14,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:14,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-11-22 16:21:14,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117527634] [2021-11-22 16:21:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:14,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:14,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:21:14,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298290305] [2021-11-22 16:21:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:14,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:14,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:14,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:21:14,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:21:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:21:14,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 16:21:14,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:21:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:14,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:21:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:14,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117527634] [2021-11-22 16:21:14,435 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:21:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298290305] [2021-11-22 16:21:14,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298290305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:21:14,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:21:14,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-22 16:21:14,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282209977] [2021-11-22 16:21:14,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:21:14,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 16:21:14,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 16:21:14,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:21:14,439 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:14,714 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-11-22 16:21:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:21:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 16:21:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:14,720 INFO L225 Difference]: With dead ends: 70 [2021-11-22 16:21:14,720 INFO L226 Difference]: Without dead ends: 43 [2021-11-22 16:21:14,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-22 16:21:14,729 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:14,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:21:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-22 16:21:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-11-22 16:21:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-22 16:21:14,737 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-11-22 16:21:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:14,742 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-22 16:21:14,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-22 16:21:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 16:21:14,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:14,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:14,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:21:14,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:14,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-11-22 16:21:14,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34285612] [2021-11-22 16:21:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:14,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:15,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:21:15,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474360565] [2021-11-22 16:21:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:15,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:15,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:15,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:21:15,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:21:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:21:15,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 16:21:15,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:21:15,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 16:21:15,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:15,449 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-11-22 16:21:15,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 39 [2021-11-22 16:21:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:21:15,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:21:22,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 16:21:22,242 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 117 treesize of output 115 [2021-11-22 16:21:22,398 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 42 treesize of output 33 [2021-11-22 16:21:22,455 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 16:21:22,456 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 289 treesize of output 266 [2021-11-22 16:21:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 16:21:22,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:22,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34285612] [2021-11-22 16:21:22,619 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:21:22,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474360565] [2021-11-22 16:21:22,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474360565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:21:22,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:21:22,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-22 16:21:22,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067012946] [2021-11-22 16:21:22,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:21:22,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 16:21:22,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 16:21:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-11-22 16:21:22,623 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:22,827 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-11-22 16:21:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:21:22,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 16:21:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:22,829 INFO L225 Difference]: With dead ends: 50 [2021-11-22 16:21:22,829 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 16:21:22,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=59, Invalid=149, Unknown=2, NotChecked=0, Total=210 [2021-11-22 16:21:22,831 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:22,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 65 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-11-22 16:21:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 16:21:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-11-22 16:21:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-22 16:21:22,839 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2021-11-22 16:21:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:22,840 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-22 16:21:22,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-22 16:21:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 16:21:22,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:22,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:22,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:21:23,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:23,075 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -672376363, now seen corresponding path program 2 times [2021-11-22 16:21:23,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:23,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628393393] [2021-11-22 16:21:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:23,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:23,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:21:23,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013317591] [2021-11-22 16:21:23,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:21:23,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:23,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:23,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:21:23,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 16:21:23,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:21:23,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:21:23,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:21:23,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:21:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:23,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:21:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:23,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:23,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628393393] [2021-11-22 16:21:23,470 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:21:23,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013317591] [2021-11-22 16:21:23,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013317591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:21:23,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:21:23,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-22 16:21:23,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539692889] [2021-11-22 16:21:23,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:21:23,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 16:21:23,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 16:21:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-22 16:21:23,475 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:23,731 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-11-22 16:21:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:21:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 16:21:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:23,735 INFO L225 Difference]: With dead ends: 98 [2021-11-22 16:21:23,735 INFO L226 Difference]: Without dead ends: 83 [2021-11-22 16:21:23,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-22 16:21:23,737 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:23,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 66 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:21:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-22 16:21:23,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2021-11-22 16:21:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-11-22 16:21:23,752 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2021-11-22 16:21:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:23,753 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-11-22 16:21:23,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-11-22 16:21:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 16:21:23,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:23,755 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:23,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:21:23,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:23,976 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-11-22 16:21:23,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:23,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6723246] [2021-11-22 16:21:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:23,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:24,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:21:24,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5200295] [2021-11-22 16:21:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:24,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:24,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:21:24,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 16:21:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:21:24,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 16:21:24,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:21:24,165 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 10 treesize of output 8 [2021-11-22 16:21:24,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 16:21:24,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:24,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-22 16:21:24,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:24,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-22 16:21:24,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:24,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:24,657 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-22 16:21:24,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 42 [2021-11-22 16:21:25,000 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-22 16:21:25,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 38 [2021-11-22 16:21:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:25,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:21:26,247 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 131 treesize of output 127 [2021-11-22 16:21:26,261 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 85 treesize of output 67 [2021-11-22 16:21:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:21:26,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:21:26,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6723246] [2021-11-22 16:21:26,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:21:26,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5200295] [2021-11-22 16:21:26,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5200295] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:21:26,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:21:26,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-22 16:21:26,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873338582] [2021-11-22 16:21:26,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:21:26,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-22 16:21:26,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:21:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-22 16:21:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-11-22 16:21:26,413 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:21:32,791 INFO L93 Difference]: Finished difference Result 210 states and 248 transitions. [2021-11-22 16:21:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-22 16:21:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 16:21:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:21:32,794 INFO L225 Difference]: With dead ends: 210 [2021-11-22 16:21:32,794 INFO L226 Difference]: Without dead ends: 143 [2021-11-22 16:21:32,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 16:21:32,798 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 185 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:21:32,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 196 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 332 Invalid, 0 Unknown, 59 Unchecked, 1.8s Time] [2021-11-22 16:21:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-22 16:21:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 89. [2021-11-22 16:21:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2021-11-22 16:21:32,817 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 28 [2021-11-22 16:21:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:21:32,817 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2021-11-22 16:21:32,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:21:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2021-11-22 16:21:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:21:32,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:21:32,820 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:21:32,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:21:33,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 16:21:33,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:21:33,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:21:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1487245307, now seen corresponding path program 3 times [2021-11-22 16:21:33,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:21:33,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347399839] [2021-11-22 16:21:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:21:33,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:21:33,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:21:33,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295489264] [2021-11-22 16:21:33,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 16:21:33,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:21:33,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:21:33,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:21:33,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 16:21:33,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 16:21:33,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:21:33,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 16:21:33,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:21:33,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 16:21:34,028 INFO L354 Elim1Store]: treesize reduction 1193, result has 25.9 percent of original size [2021-11-22 16:21:34,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 229 treesize of output 536 [2021-11-22 16:21:34,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,264 INFO L354 Elim1Store]: treesize reduction 118, result has 31.4 percent of original size [2021-11-22 16:21:34,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 176 [2021-11-22 16:21:34,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,447 INFO L354 Elim1Store]: treesize reduction 102, result has 34.6 percent of original size [2021-11-22 16:21:34,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 176 treesize of output 176 [2021-11-22 16:21:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:34,580 INFO L354 Elim1Store]: treesize reduction 100, result has 35.1 percent of original size [2021-11-22 16:21:34,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 183 [2021-11-22 16:21:35,717 INFO L354 Elim1Store]: treesize reduction 1576, result has 28.8 percent of original size [2021-11-22 16:21:35,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 case distinctions, treesize of input 290 treesize of output 788 [2021-11-22 16:21:44,420 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:44,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:44,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 218 [2021-11-22 16:21:44,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:45,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:45,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 154 [2021-11-22 16:21:45,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:45,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:46,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 187 [2021-11-22 16:21:46,170 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:46,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:46,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 199 [2021-11-22 16:21:46,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:46,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:46,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 162 [2021-11-22 16:21:47,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:47,728 INFO L354 Elim1Store]: treesize reduction 290, result has 15.0 percent of original size [2021-11-22 16:21:47,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 347 treesize of output 268 [2021-11-22 16:21:47,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:48,134 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:48,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:48,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:48,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 187 [2021-11-22 16:21:48,765 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:48,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 320 treesize of output 203 [2021-11-22 16:21:49,544 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:49,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:49,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:49,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:49,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 187 [2021-11-22 16:21:50,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:50,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:50,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:50,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 156 [2021-11-22 16:21:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:51,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:51,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 125 [2021-11-22 16:21:52,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:52,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 187 [2021-11-22 16:21:52,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:52,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:21:52,587 INFO L244 Elim1Store]: Index analysis took 108 ms [2021-11-22 16:21:52,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 259 treesize of output 154 [2021-11-22 16:21:52,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:21:53,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:21:53,865 INFO L354 Elim1Store]: treesize reduction 258, result has 23.7 percent of original size [2021-11-22 16:21:53,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 744 treesize of output 595 [2021-11-22 16:22:01,129 INFO L354 Elim1Store]: treesize reduction 1475, result has 29.4 percent of original size [2021-11-22 16:22:01,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 1111 treesize of output 1322 [2021-11-22 16:22:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 16:22:39,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:10,114 WARN L227 SmtUtils]: Spent 27.05s on a formula simplification. DAG size of input: 90 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:23:17,029 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:23:17,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 16:23:17,100 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 1208 treesize of output 1120 [2021-11-22 16:23:29,223 INFO L354 Elim1Store]: treesize reduction 84, result has 42.1 percent of original size [2021-11-22 16:23:29,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3134 treesize of output 2418 [2021-11-22 16:23:29,471 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 16:23:29,472 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 2860 treesize of output 1 [2021-11-22 16:23:29,536 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 16:23:29,537 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 1860 treesize of output 1732 [2021-11-22 16:30:06,901 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 954 treesize of output 873 [2021-11-22 16:30:06,940 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 16:30:06,940 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 113 treesize of output 64 [2021-11-22 16:30:07,056 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-11-22 16:30:07,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1316 treesize of output 1 [2021-11-22 16:30:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 16:30:09,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347399839] [2021-11-22 16:30:09,355 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:30:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295489264] [2021-11-22 16:30:09,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295489264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:30:09,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:30:09,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2021-11-22 16:30:09,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066333023] [2021-11-22 16:30:09,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:30:09,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 16:30:09,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 16:30:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=282, Unknown=2, NotChecked=0, Total=380 [2021-11-22 16:30:09,358 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:56,220 WARN L227 SmtUtils]: Spent 45.98s on a formula simplification. DAG size of input: 85 DAG size of output: 83 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:32:00,263 WARN L227 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 102 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:32:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:32:02,009 INFO L93 Difference]: Finished difference Result 202 states and 253 transitions. [2021-11-22 16:32:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-22 16:32:02,012 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-22 16:32:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:32:02,015 INFO L225 Difference]: With dead ends: 202 [2021-11-22 16:32:02,015 INFO L226 Difference]: Without dead ends: 162 [2021-11-22 16:32:02,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 150.5s TimeCoverageRelationStatistics Valid=214, Invalid=654, Unknown=2, NotChecked=0, Total=870 [2021-11-22 16:32:02,017 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 16:32:02,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 71 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 159 Invalid, 0 Unknown, 62 Unchecked, 0.9s Time] [2021-11-22 16:32:02,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-22 16:32:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2021-11-22 16:32:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.2734375) internal successors, (163), 128 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 163 transitions. [2021-11-22 16:32:02,050 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 163 transitions. Word has length 30 [2021-11-22 16:32:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:32:02,051 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 163 transitions. [2021-11-22 16:32:02,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 163 transitions. [2021-11-22 16:32:02,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 16:32:02,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:32:02,054 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:32:02,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 16:32:02,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:32:02,258 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:32:02,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:32:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1708848056, now seen corresponding path program 2 times [2021-11-22 16:32:02,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:32:02,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008171682] [2021-11-22 16:32:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:32:02,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:32:02,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:32:02,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292396287] [2021-11-22 16:32:02,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:32:02,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:32:02,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:32:02,290 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:32:02,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 16:32:02,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:32:02,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:32:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 16:32:02,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:32:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 16:32:02,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:32:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 16:32:02,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:32:02,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008171682] [2021-11-22 16:32:02,655 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:32:02,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292396287] [2021-11-22 16:32:02,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292396287] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:32:02,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:32:02,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-22 16:32:02,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72365358] [2021-11-22 16:32:02,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:32:02,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 16:32:02,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:32:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 16:32:02,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:32:02,657 INFO L87 Difference]: Start difference. First operand 129 states and 163 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:32:03,398 INFO L93 Difference]: Finished difference Result 291 states and 357 transitions. [2021-11-22 16:32:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 16:32:03,399 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-22 16:32:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:32:03,402 INFO L225 Difference]: With dead ends: 291 [2021-11-22 16:32:03,402 INFO L226 Difference]: Without dead ends: 219 [2021-11-22 16:32:03,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-22 16:32:03,404 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 169 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:32:03,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 107 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 16:32:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-22 16:32:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 168. [2021-11-22 16:32:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.2574850299401197) internal successors, (210), 167 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2021-11-22 16:32:03,430 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 37 [2021-11-22 16:32:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:32:03,430 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2021-11-22 16:32:03,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2021-11-22 16:32:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 16:32:03,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:32:03,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:32:03,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 16:32:03,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:32:03,650 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:32:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:32:03,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1173959464, now seen corresponding path program 3 times [2021-11-22 16:32:03,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:32:03,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106623149] [2021-11-22 16:32:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:32:03,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:32:03,676 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:32:03,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684476774] [2021-11-22 16:32:03,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 16:32:03,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:32:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:32:03,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:32:03,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 16:32:03,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 16:32:03,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:32:03,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 16:32:03,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:32:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 16:32:04,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:32:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 16:32:04,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:32:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106623149] [2021-11-22 16:32:04,387 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:32:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684476774] [2021-11-22 16:32:04,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684476774] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:32:04,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:32:04,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-11-22 16:32:04,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931554757] [2021-11-22 16:32:04,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:32:04,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 16:32:04,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:32:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 16:32:04,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:32:04,390 INFO L87 Difference]: Start difference. First operand 168 states and 210 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:32:05,706 INFO L93 Difference]: Finished difference Result 211 states and 251 transitions. [2021-11-22 16:32:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 16:32:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-22 16:32:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:32:05,709 INFO L225 Difference]: With dead ends: 211 [2021-11-22 16:32:05,709 INFO L226 Difference]: Without dead ends: 202 [2021-11-22 16:32:05,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=450, Invalid=1530, Unknown=0, NotChecked=0, Total=1980 [2021-11-22 16:32:05,711 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 175 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:32:05,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 101 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 16:32:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-22 16:32:05,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 168. [2021-11-22 16:32:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.2455089820359282) internal successors, (208), 167 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2021-11-22 16:32:05,736 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 37 [2021-11-22 16:32:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:32:05,737 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2021-11-22 16:32:05,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:32:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2021-11-22 16:32:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 16:32:05,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:32:05,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:32:05,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 16:32:05,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 16:32:05,964 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:32:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:32:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 4 times [2021-11-22 16:32:05,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:32:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328203036] [2021-11-22 16:32:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:32:05,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:32:05,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:32:05,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815643400] [2021-11-22 16:32:05,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 16:32:05,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:32:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:32:05,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:32:06,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bd438c-df44-4cc8-8c23-df42ac1f913e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 16:32:06,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 16:32:06,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:32:06,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 16:32:06,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:32:06,237 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 10 treesize of output 8 [2021-11-22 16:32:06,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 16:32:06,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:06,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 245 [2021-11-22 16:32:06,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2021-11-22 16:32:06,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2021-11-22 16:32:06,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 68 [2021-11-22 16:32:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-22 16:32:06,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:06,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2021-11-22 16:32:07,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,171 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-22 16:32:07,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 262 treesize of output 508 [2021-11-22 16:32:07,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 140 [2021-11-22 16:32:07,453 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 16:32:07,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,560 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-22 16:32:07,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 268 treesize of output 153 [2021-11-22 16:32:07,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 126 [2021-11-22 16:32:07,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:32:07,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:32:07,858 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-22 16:32:07,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 79 treesize of output 68 [2021-11-22 16:32:08,636 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-22 16:32:08,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 114 treesize of output 54 [2021-11-22 16:32:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:32:08,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:32:23,260 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 217562 treesize of output 208986 [2021-11-22 16:32:23,896 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-22 16:32:23,897 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 244506 treesize of output 206810 [2021-11-22 16:32:31,774 WARN L227 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 411 DAG size of output: 409 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)