./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 15:47:41,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 15:47:41,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 15:47:42,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 15:47:42,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 15:47:42,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 15:47:42,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 15:47:42,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 15:47:42,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 15:47:42,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 15:47:42,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 15:47:42,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 15:47:42,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 15:47:42,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 15:47:42,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 15:47:42,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 15:47:42,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 15:47:42,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 15:47:42,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 15:47:42,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 15:47:42,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 15:47:42,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 15:47:42,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 15:47:42,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 15:47:42,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 15:47:42,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 15:47:42,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 15:47:42,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 15:47:42,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 15:47:42,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 15:47:42,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 15:47:42,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 15:47:42,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 15:47:42,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 15:47:42,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 15:47:42,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 15:47:42,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 15:47:42,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 15:47:42,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 15:47:42,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 15:47:42,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 15:47:42,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 15:47:42,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 15:47:42,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 15:47:42,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 15:47:42,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 15:47:42,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 15:47:42,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 15:47:42,112 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 15:47:42,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 15:47:42,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 15:47:42,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 15:47:42,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 15:47:42,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 15:47:42,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 15:47:42,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 15:47:42,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 15:47:42,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 15:47:42,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 15:47:42,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 15:47:42,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 15:47:42,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 15:47:42,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 15:47:42,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 15:47:42,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 15:47:42,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 15:47:42,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 15:47:42,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 15:47:42,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 15:47:42,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 15:47:42,116 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 15:47:42,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 15:47:42,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 15:47:42,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 15:47:42,117 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-04 15:47:42,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 15:47:42,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 15:47:42,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 15:47:42,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 15:47:42,354 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 15:47:42,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-04 15:47:42,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f74f3d3/064453fa8b9e4496b18ecd39c6e1f614/FLAGaa5cd1a41 [2021-11-04 15:47:42,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 15:47:42,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-04 15:47:42,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f74f3d3/064453fa8b9e4496b18ecd39c6e1f614/FLAGaa5cd1a41 [2021-11-04 15:47:43,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f74f3d3/064453fa8b9e4496b18ecd39c6e1f614 [2021-11-04 15:47:43,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 15:47:43,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 15:47:43,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 15:47:43,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 15:47:43,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 15:47:43,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:47:43" (1/1) ... [2021-11-04 15:47:43,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2332ce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:43, skipping insertion in model container [2021-11-04 15:47:43,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:47:43" (1/1) ... [2021-11-04 15:47:43,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 15:47:43,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 15:47:43,811 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-04 15:47:43,909 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-04 15:47:43,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 15:47:43,927 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 15:47:43,949 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-04 15:47:44,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-04 15:47:44,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 15:47:44,065 INFO L208 MainTranslator]: Completed translation [2021-11-04 15:47:44,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44 WrapperNode [2021-11-04 15:47:44,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 15:47:44,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 15:47:44,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 15:47:44,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 15:47:44,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 15:47:44,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 15:47:44,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 15:47:44,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 15:47:44,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 15:47:44,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 15:47:44,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 15:47:44,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 15:47:44,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (1/1) ... [2021-11-04 15:47:44,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 15:47:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:44,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 15:47:44,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 15:47:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 15:47:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 15:47:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 15:47:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 15:47:44,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 15:47:44,893 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-04 15:47:44,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:47:44 BoogieIcfgContainer [2021-11-04 15:47:44,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 15:47:44,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 15:47:44,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 15:47:44,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 15:47:44,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:47:43" (1/3) ... [2021-11-04 15:47:44,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bc5270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:47:44, skipping insertion in model container [2021-11-04 15:47:44,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:47:44" (2/3) ... [2021-11-04 15:47:44,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bc5270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:47:44, skipping insertion in model container [2021-11-04 15:47:44,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:47:44" (3/3) ... [2021-11-04 15:47:44,903 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-04 15:47:44,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 15:47:44,907 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-04 15:47:44,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 15:47:44,968 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 [2021-11-04 15:47:44,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-04 15:47:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) [2021-11-04 15:47:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 15:47:45,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:45,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:45,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-04 15:47:45,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:45,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866808209] [2021-11-04 15:47:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:45,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:47:45,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:45,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866808209] [2021-11-04 15:47:45,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866808209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:45,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:45,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 15:47:45,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947243862] [2021-11-04 15:47:45,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:45,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 15:47:45,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 15:47:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 15:47:45,234 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-04 15:47:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:45,739 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-04 15:47:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 15:47:45,741 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-04 15:47:45,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:45,750 INFO L225 Difference]: With dead ends: 410 [2021-11-04 15:47:45,752 INFO L226 Difference]: Without dead ends: 173 [2021-11-04 15:47:45,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 15:47:45,759 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 372.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 453.02ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:45,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 269 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 453.02ms Time] [2021-11-04 15:47:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-04 15:47:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-04 15:47:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 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) [2021-11-04 15:47:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-04 15:47:45,795 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-04 15:47:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:45,796 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-04 15:47:45,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-04 15:47:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-04 15:47:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 15:47:45,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:45,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:45,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 15:47:45,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-04 15:47:45,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:45,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089570240] [2021-11-04 15:47:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:45,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:47:45,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:45,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089570240] [2021-11-04 15:47:45,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089570240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:45,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:45,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:47:45,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573444313] [2021-11-04 15:47:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:45,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:47:45,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:47:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:47:45,862 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:47:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:46,552 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2021-11-04 15:47:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:47:46,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 15:47:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:46,557 INFO L225 Difference]: With dead ends: 377 [2021-11-04 15:47:46,558 INFO L226 Difference]: Without dead ends: 294 [2021-11-04 15:47:46,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:47:46,559 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 539.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.87ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 653.98ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:46,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 676 Unknown, 0 Unchecked, 4.87ms Time], IncrementalHoareTripleChecker [3 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 653.98ms Time] [2021-11-04 15:47:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-04 15:47:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-04 15:47:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 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) [2021-11-04 15:47:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-04 15:47:46,572 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-04 15:47:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:46,572 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-04 15:47:46,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:47:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-04 15:47:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:47:46,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:46,575 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:46,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 15:47:46,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-04 15:47:46,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:46,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334288006] [2021-11-04 15:47:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:46,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:46,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:46,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082485089] [2021-11-04 15:47:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:46,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:46,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:46,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 15:47:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:46,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:47:46,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:47:47,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:47,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:47,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334288006] [2021-11-04 15:47:47,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:47,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082485089] [2021-11-04 15:47:47,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082485089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:47,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:47,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:47:47,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200998380] [2021-11-04 15:47:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:47,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:47:47,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:47:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:47,049 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 15:47:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:47,454 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2021-11-04 15:47:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:47:47,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 15:47:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:47,456 INFO L225 Difference]: With dead ends: 367 [2021-11-04 15:47:47,456 INFO L226 Difference]: Without dead ends: 196 [2021-11-04 15:47:47,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:47,458 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 323.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 392.83ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:47,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [28 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 392.83ms Time] [2021-11-04 15:47:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-04 15:47:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-04 15:47:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.306878306878307) internal successors, (247), 194 states have internal predecessors, (247), 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) [2021-11-04 15:47:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2021-11-04 15:47:47,469 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2021-11-04 15:47:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:47,469 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2021-11-04 15:47:47,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 15:47:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2021-11-04 15:47:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:47:47,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:47,471 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:47,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:47,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:47,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2021-11-04 15:47:47,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:47,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588626035] [2021-11-04 15:47:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:47,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:47,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:47,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094860657] [2021-11-04 15:47:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:47,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:47,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:47,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:47,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 15:47:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:47,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:47:47,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 15:47:48,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:48,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:48,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588626035] [2021-11-04 15:47:48,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:48,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094860657] [2021-11-04 15:47:48,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094860657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:48,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:48,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:47:48,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512294841] [2021-11-04 15:47:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:48,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:47:48,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:47:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:48,036 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-04 15:47:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:48,422 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2021-11-04 15:47:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:47:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2021-11-04 15:47:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:48,423 INFO L225 Difference]: With dead ends: 298 [2021-11-04 15:47:48,423 INFO L226 Difference]: Without dead ends: 216 [2021-11-04 15:47:48,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:48,425 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 317.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.31ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:48,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [28 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 376.31ms Time] [2021-11-04 15:47:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-04 15:47:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-04 15:47:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.277511961722488) internal successors, (267), 214 states have internal predecessors, (267), 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) [2021-11-04 15:47:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2021-11-04 15:47:48,434 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2021-11-04 15:47:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:48,434 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2021-11-04 15:47:48,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-04 15:47:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2021-11-04 15:47:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:47:48,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:48,445 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:48,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:48,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-04 15:47:48,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2021-11-04 15:47:48,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:48,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549313215] [2021-11-04 15:47:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:48,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:48,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:48,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446842626] [2021-11-04 15:47:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:48,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:48,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:48,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:48,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 15:47:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:48,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:47:48,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:47:48,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:48,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:48,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549313215] [2021-11-04 15:47:48,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:48,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446842626] [2021-11-04 15:47:48,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446842626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:48,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:48,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:47:48,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418667491] [2021-11-04 15:47:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:48,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:47:48,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:47:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:47:48,991 INFO L87 Difference]: Start difference. First operand 215 states and 267 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-11-04 15:47:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:49,550 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2021-11-04 15:47:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:47:49,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-11-04 15:47:49,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:49,552 INFO L225 Difference]: With dead ends: 418 [2021-11-04 15:47:49,552 INFO L226 Difference]: Without dead ends: 207 [2021-11-04 15:47:49,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:47:49,553 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 213 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 468.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 540.91ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:49,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 0 Invalid, 472 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [24 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 540.91ms Time] [2021-11-04 15:47:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-04 15:47:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-11-04 15:47:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 200 states have internal predecessors, (246), 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) [2021-11-04 15:47:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-11-04 15:47:49,561 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2021-11-04 15:47:49,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:49,561 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-11-04 15:47:49,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-11-04 15:47:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-11-04 15:47:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:47:49,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:49,563 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:49,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:49,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:49,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2021-11-04 15:47:49,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:49,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166491781] [2021-11-04 15:47:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:49,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:49,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:49,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848087835] [2021-11-04 15:47:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:49,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:49,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:49,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 15:47:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:49,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:47:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 15:47:50,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:50,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:50,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166491781] [2021-11-04 15:47:50,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:50,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848087835] [2021-11-04 15:47:50,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848087835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:50,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:50,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:47:50,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300484677] [2021-11-04 15:47:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:50,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:47:50,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:47:50,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:47:50,109 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-04 15:47:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:50,916 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2021-11-04 15:47:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:47:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 96 [2021-11-04 15:47:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:50,918 INFO L225 Difference]: With dead ends: 295 [2021-11-04 15:47:50,918 INFO L226 Difference]: Without dead ends: 193 [2021-11-04 15:47:50,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:47:50,919 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 714.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 787.97ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:50,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 562 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [24 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 787.97ms Time] [2021-11-04 15:47:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-04 15:47:50,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-11-04 15:47:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 186 states have internal predecessors, (225), 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) [2021-11-04 15:47:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2021-11-04 15:47:50,925 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2021-11-04 15:47:50,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:50,926 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2021-11-04 15:47:50,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-04 15:47:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2021-11-04 15:47:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:47:50,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:50,927 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:50,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:51,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:51,136 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-04 15:47:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:51,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61656624] [2021-11-04 15:47:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:51,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:51,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:51,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76609893] [2021-11-04 15:47:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:51,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:51,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:51,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 15:47:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:51,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 15:47:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:47:51,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:51,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:51,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61656624] [2021-11-04 15:47:51,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:51,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76609893] [2021-11-04 15:47:51,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76609893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:51,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:51,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:47:51,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089511561] [2021-11-04 15:47:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:51,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:47:51,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:47:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:51,561 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 15:47:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:52,025 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2021-11-04 15:47:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:47:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 15:47:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:52,027 INFO L225 Difference]: With dead ends: 486 [2021-11-04 15:47:52,027 INFO L226 Difference]: Without dead ends: 303 [2021-11-04 15:47:52,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:52,029 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 355.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 444.79ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:52,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 444.79ms Time] [2021-11-04 15:47:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-04 15:47:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2021-11-04 15:47:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.2280701754385965) internal successors, (350), 290 states have internal predecessors, (350), 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) [2021-11-04 15:47:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2021-11-04 15:47:52,042 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2021-11-04 15:47:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:52,042 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2021-11-04 15:47:52,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 15:47:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2021-11-04 15:47:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 15:47:52,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:52,044 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:52,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:52,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:52,252 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-04 15:47:52,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:52,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536121362] [2021-11-04 15:47:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:52,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:52,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:52,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623687064] [2021-11-04 15:47:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:52,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:52,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:52,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 15:47:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:52,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:47:52,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:47:52,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:52,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:52,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536121362] [2021-11-04 15:47:52,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:52,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623687064] [2021-11-04 15:47:52,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623687064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:52,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:52,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:47:52,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857543637] [2021-11-04 15:47:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:52,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:47:52,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:47:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:52,584 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-04 15:47:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:53,118 INFO L93 Difference]: Finished difference Result 536 states and 651 transitions. [2021-11-04 15:47:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:47:53,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-04 15:47:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:53,120 INFO L225 Difference]: With dead ends: 536 [2021-11-04 15:47:53,120 INFO L226 Difference]: Without dead ends: 293 [2021-11-04 15:47:53,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:47:53,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 520.95ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:53,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 422 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 520.95ms Time] [2021-11-04 15:47:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-04 15:47:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-04 15:47:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 287 states have (on average 1.2264808362369337) internal successors, (352), 292 states have internal predecessors, (352), 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) [2021-11-04 15:47:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 352 transitions. [2021-11-04 15:47:53,129 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 352 transitions. Word has length 103 [2021-11-04 15:47:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 352 transitions. [2021-11-04 15:47:53,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-04 15:47:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 352 transitions. [2021-11-04 15:47:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 15:47:53,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:53,130 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:53,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:53,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:53,344 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash 77446145, now seen corresponding path program 1 times [2021-11-04 15:47:53,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:53,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993571830] [2021-11-04 15:47:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:53,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:53,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:53,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136963322] [2021-11-04 15:47:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:53,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:53,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:53,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 15:47:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:53,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 15:47:53,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 15:47:53,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:47:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 15:47:53,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:53,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993571830] [2021-11-04 15:47:53,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:53,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136963322] [2021-11-04 15:47:53,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136963322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:47:53,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:47:53,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 15:47:53,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275441025] [2021-11-04 15:47:53,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:47:53,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 15:47:53,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 15:47:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 15:47:53,873 INFO L87 Difference]: Start difference. First operand 293 states and 352 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-04 15:47:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:54,430 INFO L93 Difference]: Finished difference Result 544 states and 663 transitions. [2021-11-04 15:47:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 15:47:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 105 [2021-11-04 15:47:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:54,434 INFO L225 Difference]: With dead ends: 544 [2021-11-04 15:47:54,434 INFO L226 Difference]: Without dead ends: 299 [2021-11-04 15:47:54,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.19ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 15:47:54,437 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 456.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 539.48ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:54,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 645 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [12 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 539.48ms Time] [2021-11-04 15:47:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-04 15:47:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-11-04 15:47:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 293 states have (on average 1.2218430034129693) internal successors, (358), 298 states have internal predecessors, (358), 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) [2021-11-04 15:47:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2021-11-04 15:47:54,446 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 105 [2021-11-04 15:47:54,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:54,447 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2021-11-04 15:47:54,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-04 15:47:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2021-11-04 15:47:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-04 15:47:54,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:54,449 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:54,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:54,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:54,672 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -383990624, now seen corresponding path program 2 times [2021-11-04 15:47:54,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:54,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778319649] [2021-11-04 15:47:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:54,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:54,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:54,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044140933] [2021-11-04 15:47:54,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 15:47:54,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:54,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:54,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 15:47:54,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 15:47:54,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 15:47:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 15:47:54,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 15:47:55,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:47:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 15:47:55,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:55,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778319649] [2021-11-04 15:47:55,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:55,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044140933] [2021-11-04 15:47:55,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044140933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:47:55,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:47:55,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 15:47:55,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064287393] [2021-11-04 15:47:55,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:47:55,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 15:47:55,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 15:47:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 15:47:55,274 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-04 15:47:55,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:55,955 INFO L93 Difference]: Finished difference Result 562 states and 687 transitions. [2021-11-04 15:47:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 15:47:55,956 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-04 15:47:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:55,957 INFO L225 Difference]: With dead ends: 562 [2021-11-04 15:47:55,957 INFO L226 Difference]: Without dead ends: 311 [2021-11-04 15:47:55,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.57ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 15:47:55,958 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 565.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 660.02ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:55,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 678 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [33 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 660.02ms Time] [2021-11-04 15:47:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-04 15:47:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-11-04 15:47:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 305 states have (on average 1.2131147540983607) internal successors, (370), 310 states have internal predecessors, (370), 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) [2021-11-04 15:47:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 370 transitions. [2021-11-04 15:47:55,969 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 370 transitions. Word has length 111 [2021-11-04 15:47:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:55,969 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 370 transitions. [2021-11-04 15:47:55,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-04 15:47:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 370 transitions. [2021-11-04 15:47:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 15:47:55,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:55,971 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:55,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:56,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 15:47:56,190 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash 562679104, now seen corresponding path program 3 times [2021-11-04 15:47:56,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:56,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554192899] [2021-11-04 15:47:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:56,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:56,205 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:56,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54659691] [2021-11-04 15:47:56,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 15:47:56,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:56,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:56,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:56,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 15:47:56,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 15:47:56,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 15:47:56,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 15:47:56,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 15:47:56,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:47:56,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:56,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554192899] [2021-11-04 15:47:56,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:56,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54659691] [2021-11-04 15:47:56,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54659691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:47:56,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:47:56,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:47:56,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813087823] [2021-11-04 15:47:56,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:47:56,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:47:56,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:56,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:47:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:47:56,578 INFO L87 Difference]: Start difference. First operand 311 states and 370 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-04 15:47:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:56,903 INFO L93 Difference]: Finished difference Result 514 states and 611 transitions. [2021-11-04 15:47:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:47:56,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 123 [2021-11-04 15:47:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:56,905 INFO L225 Difference]: With dead ends: 514 [2021-11-04 15:47:56,905 INFO L226 Difference]: Without dead ends: 251 [2021-11-04 15:47:56,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:47:56,906 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 308 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 307.11ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:56,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 0 Invalid, 315 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 307.11ms Time] [2021-11-04 15:47:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-04 15:47:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-11-04 15:47:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 245 states have (on average 1.1918367346938776) internal successors, (292), 250 states have internal predecessors, (292), 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) [2021-11-04 15:47:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 292 transitions. [2021-11-04 15:47:56,915 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 292 transitions. Word has length 123 [2021-11-04 15:47:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:56,915 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 292 transitions. [2021-11-04 15:47:56,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-04 15:47:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 292 transitions. [2021-11-04 15:47:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 15:47:56,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:56,917 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:56,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 15:47:57,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:57,132 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash 455085018, now seen corresponding path program 1 times [2021-11-04 15:47:57,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:57,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811275737] [2021-11-04 15:47:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:57,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:57,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:57,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028243309] [2021-11-04 15:47:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:57,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:57,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:57,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:57,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 15:47:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:47:57,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 15:47:57,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:47:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 15:47:57,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:47:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 15:47:58,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:47:58,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811275737] [2021-11-04 15:47:58,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:47:58,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028243309] [2021-11-04 15:47:58,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028243309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:47:58,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:47:58,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 15:47:58,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637026783] [2021-11-04 15:47:58,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:47:58,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 15:47:58,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:47:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 15:47:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 15:47:58,003 INFO L87 Difference]: Start difference. First operand 251 states and 292 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-11-04 15:47:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:47:59,222 INFO L93 Difference]: Finished difference Result 465 states and 565 transitions. [2021-11-04 15:47:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 15:47:59,222 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 130 [2021-11-04 15:47:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:47:59,223 INFO L225 Difference]: With dead ends: 465 [2021-11-04 15:47:59,223 INFO L226 Difference]: Without dead ends: 275 [2021-11-04 15:47:59,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 224.85ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 15:47:59,225 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1080.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1192.88ms IncrementalHoareTripleChecker+Time [2021-11-04 15:47:59,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 958 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [86 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1192.88ms Time] [2021-11-04 15:47:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-04 15:47:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-04 15:47:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.174721189591078) internal successors, (316), 274 states have internal predecessors, (316), 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) [2021-11-04 15:47:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 316 transitions. [2021-11-04 15:47:59,233 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 316 transitions. Word has length 130 [2021-11-04 15:47:59,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:47:59,233 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 316 transitions. [2021-11-04 15:47:59,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-11-04 15:47:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 316 transitions. [2021-11-04 15:47:59,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 15:47:59,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:47:59,235 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:47:59,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-04 15:47:59,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 15:47:59,451 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:47:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:47:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash -535721318, now seen corresponding path program 2 times [2021-11-04 15:47:59,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:47:59,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293383458] [2021-11-04 15:47:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:47:59,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:47:59,474 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:47:59,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21179748] [2021-11-04 15:47:59,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 15:47:59,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:47:59,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:47:59,476 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:47:59,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 15:47:59,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 15:47:59,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 15:47:59,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 15:47:59,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:48:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 15:48:00,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:48:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 15:48:01,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:48:01,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293383458] [2021-11-04 15:48:01,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:48:01,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21179748] [2021-11-04 15:48:01,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21179748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:48:01,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:48:01,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 15:48:01,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536971703] [2021-11-04 15:48:01,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:48:01,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 15:48:01,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:48:01,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 15:48:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 15:48:01,182 INFO L87 Difference]: Start difference. First operand 275 states and 316 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-04 15:48:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:48:02,512 INFO L93 Difference]: Finished difference Result 521 states and 641 transitions. [2021-11-04 15:48:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 15:48:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-04 15:48:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:48:02,514 INFO L225 Difference]: With dead ends: 521 [2021-11-04 15:48:02,514 INFO L226 Difference]: Without dead ends: 319 [2021-11-04 15:48:02,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 941.16ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 15:48:02,516 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1051.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1274.37ms IncrementalHoareTripleChecker+Time [2021-11-04 15:48:02,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1903 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [163 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1274.37ms Time] [2021-11-04 15:48:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-04 15:48:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-11-04 15:48:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 313 states have (on average 1.1501597444089458) internal successors, (360), 318 states have internal predecessors, (360), 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) [2021-11-04 15:48:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 360 transitions. [2021-11-04 15:48:02,525 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 360 transitions. Word has length 154 [2021-11-04 15:48:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:48:02,525 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 360 transitions. [2021-11-04 15:48:02,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-04 15:48:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 360 transitions. [2021-11-04 15:48:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-04 15:48:02,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:48:02,527 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:48:02,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 15:48:02,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 15:48:02,756 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 15:48:02,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:48:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1925066490, now seen corresponding path program 3 times [2021-11-04 15:48:02,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:48:02,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118087901] [2021-11-04 15:48:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:48:02,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:48:02,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:48:02,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264270122] [2021-11-04 15:48:02,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 15:48:02,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:48:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:48:02,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:48:02,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15