./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_test10-2.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 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 06:00:27,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 06:00:27,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 06:00:27,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 06:00:27,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 06:00:27,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 06:00:27,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 06:00:27,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 06:00:27,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 06:00:27,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 06:00:27,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 06:00:27,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 06:00:27,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 06:00:27,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 06:00:27,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 06:00:27,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 06:00:27,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 06:00:27,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 06:00:27,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 06:00:27,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 06:00:27,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 06:00:27,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 06:00:27,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 06:00:27,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 06:00:27,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 06:00:27,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 06:00:27,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 06:00:27,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 06:00:27,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 06:00:27,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 06:00:27,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 06:00:27,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 06:00:27,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 06:00:27,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 06:00:27,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 06:00:27,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 06:00:27,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 06:00:27,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 06:00:27,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 06:00:27,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 06:00:27,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 06:00:27,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 06:00:27,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 06:00:27,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 06:00:27,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 06:00:27,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 06:00:27,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 06:00:27,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 06:00:27,156 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 06:00:27,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 06:00:27,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 06:00:27,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 06:00:27,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 06:00:27,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 06:00:27,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 06:00:27,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 06:00:27,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 06:00:27,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 06:00:27,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 06:00:27,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 06:00:27,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 06:00:27,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 06:00:27,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 06:00:27,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 06:00:27,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:00:27,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 06:00:27,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 06:00:27,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 06:00:27,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 06:00:27,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 06:00:27,160 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 06:00:27,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 06:00:27,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 06:00:27,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 06:00:27,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2021-11-03 06:00:27,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 06:00:27,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 06:00:27,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 06:00:27,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 06:00:27,398 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 06:00:27,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-03 06:00:27,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c327a92a6/45c2e17afed84d5cb1b3332eddaba369/FLAG06941fc3a [2021-11-03 06:00:27,954 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 06:00:27,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-03 06:00:27,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c327a92a6/45c2e17afed84d5cb1b3332eddaba369/FLAG06941fc3a [2021-11-03 06:00:28,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c327a92a6/45c2e17afed84d5cb1b3332eddaba369 [2021-11-03 06:00:28,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 06:00:28,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 06:00:28,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 06:00:28,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 06:00:28,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 06:00:28,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:28,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c91fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28, skipping insertion in model container [2021-11-03 06:00:28,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:28,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 06:00:28,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 06:00:28,557 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_test10-2.i[33022,33035] [2021-11-03 06:00:28,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:00:28,742 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 06:00:28,762 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_test10-2.i[33022,33035] [2021-11-03 06:00:28,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:00:28,871 INFO L208 MainTranslator]: Completed translation [2021-11-03 06:00:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28 WrapperNode [2021-11-03 06:00:28,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 06:00:28,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 06:00:28,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 06:00:28,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 06:00:28,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:28,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:28,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 06:00:28,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 06:00:28,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 06:00:28,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 06:00:28,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:28,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 06:00:29,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 06:00:29,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 06:00:29,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 06:00:29,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (1/1) ... [2021-11-03 06:00:29,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:00:29,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:29,128 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) [2021-11-03 06:00:29,167 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 [2021-11-03 06:00:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 06:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 06:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 06:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 06:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 06:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 06:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 06:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 06:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 06:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 06:00:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 06:00:30,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 06:00:30,007 INFO L299 CfgBuilder]: Removed 216 assume(true) statements. [2021-11-03 06:00:30,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:00:30 BoogieIcfgContainer [2021-11-03 06:00:30,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 06:00:30,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 06:00:30,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 06:00:30,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 06:00:30,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 06:00:28" (1/3) ... [2021-11-03 06:00:30,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2674164b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:00:30, skipping insertion in model container [2021-11-03 06:00:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:00:28" (2/3) ... [2021-11-03 06:00:30,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2674164b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:00:30, skipping insertion in model container [2021-11-03 06:00:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:00:30" (3/3) ... [2021-11-03 06:00:30,016 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2021-11-03 06:00:30,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 06:00:30,021 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-03 06:00:30,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 06:00:30,069 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 [2021-11-03 06:00:30,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-03 06:00:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 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) [2021-11-03 06:00:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 06:00:30,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:30,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:00:30,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-03 06:00:30,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:30,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811104208] [2021-11-03 06:00:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:30,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:00:30,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:30,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811104208] [2021-11-03 06:00:30,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811104208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:30,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:30,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 06:00:30,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813061892] [2021-11-03 06:00:30,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 06:00:30,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 06:00:30,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 06:00:30,318 INFO L87 Difference]: Start difference. First operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 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) [2021-11-03 06:00:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:31,221 INFO L93 Difference]: Finished difference Result 996 states and 1678 transitions. [2021-11-03 06:00:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 06:00:31,223 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 [2021-11-03 06:00:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:31,241 INFO L225 Difference]: With dead ends: 996 [2021-11-03 06:00:31,241 INFO L226 Difference]: Without dead ends: 465 [2021-11-03 06:00:31,251 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 [2021-11-03 06:00:31,255 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 646.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 823.86ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:31,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 6.54ms Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 823.86ms Time] [2021-11-03 06:00:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-03 06:00:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-03 06:00:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 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) [2021-11-03 06:00:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-03 06:00:31,312 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-03 06:00:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:31,313 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-03 06:00:31,314 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) [2021-11-03 06:00:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-03 06:00:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 06:00:31,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:31,316 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] [2021-11-03 06:00:31,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 06:00:31,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-03 06:00:31,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:31,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598582381] [2021-11-03 06:00:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:31,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:00:31,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:31,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598582381] [2021-11-03 06:00:31,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598582381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:31,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:31,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:00:31,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774231377] [2021-11-03 06:00:31,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:00:31,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:00:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:00:31,426 INFO L87 Difference]: Start difference. First operand 465 states and 608 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) [2021-11-03 06:00:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:32,871 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-03 06:00:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:00:32,871 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 [2021-11-03 06:00:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:32,874 INFO L225 Difference]: With dead ends: 831 [2021-11-03 06:00:32,874 INFO L226 Difference]: Without dead ends: 540 [2021-11-03 06:00:32,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:32,876 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1146.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1377.63ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:32,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1825 Unknown, 0 Unchecked, 8.11ms Time], IncrementalHoareTripleChecker [2 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1377.63ms Time] [2021-11-03 06:00:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-03 06:00:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-03 06:00:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 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) [2021-11-03 06:00:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-03 06:00:32,906 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-03 06:00:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:32,907 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-03 06:00:32,907 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) [2021-11-03 06:00:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-03 06:00:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:00:32,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:32,912 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] [2021-11-03 06:00:32,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 06:00:32,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-03 06:00:32,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:32,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757458280] [2021-11-03 06:00:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:32,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:32,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:32,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274419357] [2021-11-03 06:00:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:32,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:32,957 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) [2021-11-03 06:00:32,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 06:00:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:33,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:00:33,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:33,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:33,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757458280] [2021-11-03 06:00:33,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:33,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274419357] [2021-11-03 06:00:33,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274419357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:33,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:33,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:00:33,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242189926] [2021-11-03 06:00:33,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:00:33,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:00:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:33,371 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-03 06:00:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:34,302 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-03 06:00:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:00:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-03 06:00:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:34,304 INFO L225 Difference]: With dead ends: 951 [2021-11-03 06:00:34,304 INFO L226 Difference]: Without dead ends: 488 [2021-11-03 06:00:34,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:34,306 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 741.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 899.16ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:34,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 899.16ms Time] [2021-11-03 06:00:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-03 06:00:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-03 06:00:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 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) [2021-11-03 06:00:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-03 06:00:34,316 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-03 06:00:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:34,317 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-03 06:00:34,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-03 06:00:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-03 06:00:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:00:34,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:34,321 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] [2021-11-03 06:00:34,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:34,526 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 [2021-11-03 06:00:34,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-03 06:00:34,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:34,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213351440] [2021-11-03 06:00:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:34,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:34,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:34,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8094428] [2021-11-03 06:00:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:34,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:34,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:34,546 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) [2021-11-03 06:00:34,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 06:00:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:34,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:34,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 06:00:34,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:34,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:34,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213351440] [2021-11-03 06:00:34,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:34,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8094428] [2021-11-03 06:00:34,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8094428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:34,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:34,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:00:34,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572666297] [2021-11-03 06:00:34,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:00:34,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:00:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:34,884 INFO L87 Difference]: Start difference. First operand 487 states and 630 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) [2021-11-03 06:00:36,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 06:00:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:36,868 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-03 06:00:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:00:36,869 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 97 [2021-11-03 06:00:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:36,871 INFO L225 Difference]: With dead ends: 787 [2021-11-03 06:00:36,871 INFO L226 Difference]: Without dead ends: 508 [2021-11-03 06:00:36,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:36,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1793.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1957.16ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:36,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1957.16ms Time] [2021-11-03 06:00:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-03 06:00:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-03 06:00:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 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) [2021-11-03 06:00:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-03 06:00:36,880 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-03 06:00:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:36,881 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-03 06:00:36,881 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) [2021-11-03 06:00:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-03 06:00:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:00:36,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:36,882 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] [2021-11-03 06:00:36,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:37,083 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 [2021-11-03 06:00:37,083 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-03 06:00:37,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:37,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947936534] [2021-11-03 06:00:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:37,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:37,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:37,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085880911] [2021-11-03 06:00:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:37,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:37,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:37,107 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) [2021-11-03 06:00:37,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 06:00:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:37,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:37,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:00:37,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:37,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:37,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947936534] [2021-11-03 06:00:37,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:37,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085880911] [2021-11-03 06:00:37,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085880911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:37,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:37,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:00:37,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495677713] [2021-11-03 06:00:37,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:00:37,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:37,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:00:37,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:00:37,469 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2021-11-03 06:00:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:38,665 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-03 06:00:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:00:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2021-11-03 06:00:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:38,668 INFO L225 Difference]: With dead ends: 1086 [2021-11-03 06:00:38,668 INFO L226 Difference]: Without dead ends: 583 [2021-11-03 06:00:38,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:38,669 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 945.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1147.13ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:38,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 0 Invalid, 1574 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [24 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1147.13ms Time] [2021-11-03 06:00:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-03 06:00:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-03 06:00:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 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) [2021-11-03 06:00:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-03 06:00:38,679 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-03 06:00:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:38,680 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-03 06:00:38,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2021-11-03 06:00:38,680 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-03 06:00:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:00:38,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:38,681 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] [2021-11-03 06:00:38,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 06:00:38,895 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 [2021-11-03 06:00:38,896 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-03 06:00:38,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:38,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701301895] [2021-11-03 06:00:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:38,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:38,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:38,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740489687] [2021-11-03 06:00:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:38,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:38,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:38,910 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) [2021-11-03 06:00:38,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 06:00:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:39,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:39,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 06:00:39,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:39,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:39,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701301895] [2021-11-03 06:00:39,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:39,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740489687] [2021-11-03 06:00:39,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740489687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:39,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:39,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:00:39,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127284877] [2021-11-03 06:00:39,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:00:39,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:00:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:00:39,213 INFO L87 Difference]: Start difference. First operand 493 states and 629 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) [2021-11-03 06:00:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:40,334 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-03 06:00:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:00:40,335 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 97 [2021-11-03 06:00:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:40,336 INFO L225 Difference]: With dead ends: 761 [2021-11-03 06:00:40,336 INFO L226 Difference]: Without dead ends: 480 [2021-11-03 06:00:40,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:40,337 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 907.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.04ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1089.53ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:40,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1428 Unknown, 0 Unchecked, 3.04ms Time], IncrementalHoareTripleChecker [24 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1089.53ms Time] [2021-11-03 06:00:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-03 06:00:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-03 06:00:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 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) [2021-11-03 06:00:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-03 06:00:40,346 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-03 06:00:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:40,347 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-03 06:00:40,347 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) [2021-11-03 06:00:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-03 06:00:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:00:40,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:40,348 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] [2021-11-03 06:00:40,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:40,566 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 [2021-11-03 06:00:40,566 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-03 06:00:40,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:40,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855352127] [2021-11-03 06:00:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:40,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:40,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:40,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295043033] [2021-11-03 06:00:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:40,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:40,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:40,589 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) [2021-11-03 06:00:40,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 06:00:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:40,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:00:40,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:00:41,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:41,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:41,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855352127] [2021-11-03 06:00:41,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:41,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295043033] [2021-11-03 06:00:41,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295043033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:41,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:00:41,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373416457] [2021-11-03 06:00:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:00:41,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:00:41,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:41,048 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-03 06:00:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:41,970 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-03 06:00:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:00:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-03 06:00:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:41,973 INFO L225 Difference]: With dead ends: 1231 [2021-11-03 06:00:41,973 INFO L226 Difference]: Without dead ends: 756 [2021-11-03 06:00:41,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:41,974 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 703.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 885.17ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:41,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1178 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [4 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 885.17ms Time] [2021-11-03 06:00:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-03 06:00:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-03 06:00:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 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) [2021-11-03 06:00:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-03 06:00:41,999 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-03 06:00:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:42,000 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-03 06:00:42,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-03 06:00:42,000 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-03 06:00:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 06:00:42,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:42,001 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] [2021-11-03 06:00:42,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:42,223 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 [2021-11-03 06:00:42,223 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:42,223 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-03 06:00:42,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:42,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303428121] [2021-11-03 06:00:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:42,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:42,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:42,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261417756] [2021-11-03 06:00:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:42,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:42,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:42,237 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) [2021-11-03 06:00:42,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 06:00:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:42,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:42,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:00:42,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:42,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:42,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303428121] [2021-11-03 06:00:42,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:42,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261417756] [2021-11-03 06:00:42,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261417756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:42,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:42,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:00:42,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722529970] [2021-11-03 06:00:42,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:00:42,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:42,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:00:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:42,531 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:00:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:43,355 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2021-11-03 06:00:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:00:43,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 06:00:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:43,358 INFO L225 Difference]: With dead ends: 1400 [2021-11-03 06:00:43,358 INFO L226 Difference]: Without dead ends: 727 [2021-11-03 06:00:43,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:43,360 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 625.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 784.25ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:43,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [6 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 784.25ms Time] [2021-11-03 06:00:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-03 06:00:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-03 06:00:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.3164556962025316) internal successors, (936), 726 states have internal predecessors, (936), 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) [2021-11-03 06:00:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2021-11-03 06:00:43,373 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2021-11-03 06:00:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:43,375 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2021-11-03 06:00:43,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:00:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2021-11-03 06:00:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 06:00:43,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:43,376 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, 1] [2021-11-03 06:00:43,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:43,590 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 [2021-11-03 06:00:43,591 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2021-11-03 06:00:43,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:43,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108616781] [2021-11-03 06:00:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:43,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:43,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:43,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660805592] [2021-11-03 06:00:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:43,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:43,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:43,640 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) [2021-11-03 06:00:43,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 06:00:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:43,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:00:43,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:00:43,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:00:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:00:44,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:44,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108616781] [2021-11-03 06:00:44,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:44,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660805592] [2021-11-03 06:00:44,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660805592] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:00:44,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:00:44,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 06:00:44,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127717990] [2021-11-03 06:00:44,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 06:00:44,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 06:00:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:00:44,081 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:00:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:45,345 INFO L93 Difference]: Finished difference Result 1423 states and 1844 transitions. [2021-11-03 06:00:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 06:00:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 06:00:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:45,356 INFO L225 Difference]: With dead ends: 1423 [2021-11-03 06:00:45,356 INFO L226 Difference]: Without dead ends: 745 [2021-11-03 06:00:45,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.80ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:00:45,359 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1041.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1229.29ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:45,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1813 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [31 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1229.29ms Time] [2021-11-03 06:00:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-03 06:00:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-11-03 06:00:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 729 states have (on average 1.308641975308642) internal successors, (954), 744 states have internal predecessors, (954), 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) [2021-11-03 06:00:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 954 transitions. [2021-11-03 06:00:45,375 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 954 transitions. Word has length 106 [2021-11-03 06:00:45,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:45,376 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 954 transitions. [2021-11-03 06:00:45,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:00:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 954 transitions. [2021-11-03 06:00:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 06:00:45,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:45,378 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, 1] [2021-11-03 06:00:45,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:45,599 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 [2021-11-03 06:00:45,599 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash -899210817, now seen corresponding path program 2 times [2021-11-03 06:00:45,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:45,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605176313] [2021-11-03 06:00:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:45,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:45,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:45,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887465446] [2021-11-03 06:00:45,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:00:45,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:45,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:45,618 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) [2021-11-03 06:00:45,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 06:00:45,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:00:45,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:00:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 06:00:45,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:00:46,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:00:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:00:46,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:46,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605176313] [2021-11-03 06:00:46,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:46,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887465446] [2021-11-03 06:00:46,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887465446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:00:46,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:00:46,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 06:00:46,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465790408] [2021-11-03 06:00:46,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 06:00:46,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 06:00:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:00:46,232 INFO L87 Difference]: Start difference. First operand 745 states and 954 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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) [2021-11-03 06:00:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:48,226 INFO L93 Difference]: Finished difference Result 1474 states and 1913 transitions. [2021-11-03 06:00:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 06:00:48,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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 112 [2021-11-03 06:00:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:48,229 INFO L225 Difference]: With dead ends: 1474 [2021-11-03 06:00:48,229 INFO L226 Difference]: Without dead ends: 781 [2021-11-03 06:00:48,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.72ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:00:48,230 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1606.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1940.08ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:48,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3070 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [92 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1940.08ms Time] [2021-11-03 06:00:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-03 06:00:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-03 06:00:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.2941176470588236) internal successors, (990), 780 states have internal predecessors, (990), 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) [2021-11-03 06:00:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 990 transitions. [2021-11-03 06:00:48,244 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 990 transitions. Word has length 112 [2021-11-03 06:00:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:48,245 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 990 transitions. [2021-11-03 06:00:48,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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) [2021-11-03 06:00:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 990 transitions. [2021-11-03 06:00:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 06:00:48,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:48,246 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] [2021-11-03 06:00:48,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:48,464 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 [2021-11-03 06:00:48,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:48,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:48,465 INFO L85 PathProgramCache]: Analyzing trace with hash 758407135, now seen corresponding path program 3 times [2021-11-03 06:00:48,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:48,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106637445] [2021-11-03 06:00:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:48,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:48,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:48,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012847823] [2021-11-03 06:00:48,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:00:48,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:48,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:48,477 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) [2021-11-03 06:00:48,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 06:00:48,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:00:48,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:00:48,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 06:00:48,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:48,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 06:00:48,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-03 06:00:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:00:48,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:48,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:48,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106637445] [2021-11-03 06:00:48,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:48,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012847823] [2021-11-03 06:00:48,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012847823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:48,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:48,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 06:00:48,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384036907] [2021-11-03 06:00:48,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 06:00:48,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 06:00:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:48,899 INFO L87 Difference]: Start difference. First operand 781 states and 990 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2021-11-03 06:00:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:50,582 INFO L93 Difference]: Finished difference Result 1452 states and 1842 transitions. [2021-11-03 06:00:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:00:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 124 [2021-11-03 06:00:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:50,585 INFO L225 Difference]: With dead ends: 1452 [2021-11-03 06:00:50,585 INFO L226 Difference]: Without dead ends: 781 [2021-11-03 06:00:50,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.87ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 06:00:50,587 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1329.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1612.69ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:50,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 2387 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [12 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1612.69ms Time] [2021-11-03 06:00:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-03 06:00:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-03 06:00:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 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) [2021-11-03 06:00:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-03 06:00:50,603 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 124 [2021-11-03 06:00:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:50,603 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-03 06:00:50,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2021-11-03 06:00:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-03 06:00:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:00:50,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:50,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:00:50,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:50,819 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 [2021-11-03 06:00:50,820 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1889355962, now seen corresponding path program 1 times [2021-11-03 06:00:50,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:50,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669323509] [2021-11-03 06:00:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:50,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:50,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:50,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854367508] [2021-11-03 06:00:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:50,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:50,835 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) [2021-11-03 06:00:50,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 06:00:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:51,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:51,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:00:51,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:51,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669323509] [2021-11-03 06:00:51,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854367508] [2021-11-03 06:00:51,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854367508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:51,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:51,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:00:51,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078125975] [2021-11-03 06:00:51,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:00:51,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:00:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:51,258 INFO L87 Difference]: Start difference. First operand 781 states and 989 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:00:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:52,252 INFO L93 Difference]: Finished difference Result 1586 states and 2019 transitions. [2021-11-03 06:00:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:00:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 171 [2021-11-03 06:00:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:52,255 INFO L225 Difference]: With dead ends: 1586 [2021-11-03 06:00:52,255 INFO L226 Difference]: Without dead ends: 823 [2021-11-03 06:00:52,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:00:52,256 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 809.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 957.74ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:52,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1205 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [28 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 957.74ms Time] [2021-11-03 06:00:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-03 06:00:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2021-11-03 06:00:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 805 states have (on average 1.2782608695652173) internal successors, (1029), 820 states have internal predecessors, (1029), 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) [2021-11-03 06:00:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1029 transitions. [2021-11-03 06:00:52,270 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1029 transitions. Word has length 171 [2021-11-03 06:00:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:52,270 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1029 transitions. [2021-11-03 06:00:52,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:00:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1029 transitions. [2021-11-03 06:00:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:00:52,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:52,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:00:52,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:52,487 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 [2021-11-03 06:00:52,488 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 508631876, now seen corresponding path program 1 times [2021-11-03 06:00:52,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:52,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091532374] [2021-11-03 06:00:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:52,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:52,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:52,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668496646] [2021-11-03 06:00:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:52,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:52,509 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) [2021-11-03 06:00:52,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 06:00:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:00:52,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:00:52,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:52,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:52,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091532374] [2021-11-03 06:00:52,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:52,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668496646] [2021-11-03 06:00:52,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668496646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:52,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:52,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:00:52,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265022694] [2021-11-03 06:00:52,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:00:52,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:00:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:00:52,951 INFO L87 Difference]: Start difference. First operand 821 states and 1029 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:00:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:53,807 INFO L93 Difference]: Finished difference Result 1580 states and 1984 transitions. [2021-11-03 06:00:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:00:53,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 171 [2021-11-03 06:00:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:53,809 INFO L225 Difference]: With dead ends: 1580 [2021-11-03 06:00:53,809 INFO L226 Difference]: Without dead ends: 795 [2021-11-03 06:00:53,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:53,811 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 679.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 820.67ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:53,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [25 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 820.67ms Time] [2021-11-03 06:00:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-03 06:00:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2021-11-03 06:00:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.2702702702702702) internal successors, (987), 792 states have internal predecessors, (987), 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) [2021-11-03 06:00:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 987 transitions. [2021-11-03 06:00:53,824 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 987 transitions. Word has length 171 [2021-11-03 06:00:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:53,824 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 987 transitions. [2021-11-03 06:00:53,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:00:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 987 transitions. [2021-11-03 06:00:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:00:53,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:53,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:00:53,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:54,045 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 [2021-11-03 06:00:54,045 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -288240300, now seen corresponding path program 1 times [2021-11-03 06:00:54,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:54,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977526558] [2021-11-03 06:00:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:54,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:54,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:54,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573491808] [2021-11-03 06:00:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:54,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:54,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:54,063 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) [2021-11-03 06:00:54,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 06:00:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:54,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:00:54,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:00:54,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:54,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:54,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977526558] [2021-11-03 06:00:54,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:54,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573491808] [2021-11-03 06:00:54,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573491808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:54,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:54,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 06:00:54,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735502040] [2021-11-03 06:00:54,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 06:00:54,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 06:00:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:54,501 INFO L87 Difference]: Start difference. First operand 793 states and 987 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2021-11-03 06:00:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:56,485 INFO L93 Difference]: Finished difference Result 2335 states and 2912 transitions. [2021-11-03 06:00:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:00:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 171 [2021-11-03 06:00:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:56,490 INFO L225 Difference]: With dead ends: 2335 [2021-11-03 06:00:56,490 INFO L226 Difference]: Without dead ends: 1580 [2021-11-03 06:00:56,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:56,493 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 568 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1614.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1924.37ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:56,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 0 Invalid, 2393 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [24 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1924.37ms Time] [2021-11-03 06:00:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-11-03 06:00:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 839. [2021-11-03 06:00:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 823 states have (on average 1.2600243013365735) internal successors, (1037), 838 states have internal predecessors, (1037), 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) [2021-11-03 06:00:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1037 transitions. [2021-11-03 06:00:56,522 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1037 transitions. Word has length 171 [2021-11-03 06:00:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:56,522 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1037 transitions. [2021-11-03 06:00:56,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2021-11-03 06:00:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1037 transitions. [2021-11-03 06:00:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:00:56,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:56,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:00:56,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-03 06:00:56,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 06:00:56,740 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536166, now seen corresponding path program 1 times [2021-11-03 06:00:56,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:56,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080907615] [2021-11-03 06:00:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:56,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:56,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:56,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333506980] [2021-11-03 06:00:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:56,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:56,754 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:00:56,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 06:00:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:56,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:00:56,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:00:57,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:00:57,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080907615] [2021-11-03 06:00:57,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333506980] [2021-11-03 06:00:57,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333506980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:00:57,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:00:57,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:00:57,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190706498] [2021-11-03 06:00:57,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:00:57,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:00:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:00:57,203 INFO L87 Difference]: Start difference. First operand 839 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:00:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:00:58,105 INFO L93 Difference]: Finished difference Result 1587 states and 1971 transitions. [2021-11-03 06:00:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:00:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 171 [2021-11-03 06:00:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:00:58,107 INFO L225 Difference]: With dead ends: 1587 [2021-11-03 06:00:58,108 INFO L226 Difference]: Without dead ends: 775 [2021-11-03 06:00:58,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:00:58,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 670.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 844.75ms IncrementalHoareTripleChecker+Time [2021-11-03 06:00:58,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [7 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 844.75ms Time] [2021-11-03 06:00:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-03 06:00:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-11-03 06:00:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 759 states have (on average 1.2635046113306982) internal successors, (959), 774 states have internal predecessors, (959), 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) [2021-11-03 06:00:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 959 transitions. [2021-11-03 06:00:58,135 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 959 transitions. Word has length 171 [2021-11-03 06:00:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:00:58,135 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 959 transitions. [2021-11-03 06:00:58,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:00:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 959 transitions. [2021-11-03 06:00:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:00:58,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:00:58,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:00:58,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 06:00:58,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 06:00:58,351 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:00:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:00:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2109747538, now seen corresponding path program 1 times [2021-11-03 06:00:58,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:00:58,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358781311] [2021-11-03 06:00:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:58,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:00:58,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:00:58,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355601556] [2021-11-03 06:00:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:00:58,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:00:58,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:00:58,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:00:58,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 06:00:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:00:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 06:00:58,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:00:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:00:58,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:00:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:00:59,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:00:59,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358781311] [2021-11-03 06:00:59,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:00:59,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355601556] [2021-11-03 06:00:59,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355601556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:00:59,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:00:59,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 06:00:59,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847879037] [2021-11-03 06:00:59,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 06:00:59,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:00:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 06:00:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:00:59,310 INFO L87 Difference]: Start difference. First operand 775 states and 959 transitions. Second operand has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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) [2021-11-03 06:01:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:00,882 INFO L93 Difference]: Finished difference Result 1567 states and 2005 transitions. [2021-11-03 06:01:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 06:01:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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 171 [2021-11-03 06:01:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:00,884 INFO L225 Difference]: With dead ends: 1567 [2021-11-03 06:01:00,884 INFO L226 Difference]: Without dead ends: 847 [2021-11-03 06:01:00,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 260.90ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:01:00,885 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1218.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1499.86ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:00,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2052 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [243 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1499.86ms Time] [2021-11-03 06:01:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-03 06:01:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-11-03 06:01:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 831 states have (on average 1.2406738868832732) internal successors, (1031), 846 states have internal predecessors, (1031), 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) [2021-11-03 06:01:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1031 transitions. [2021-11-03 06:01:00,902 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1031 transitions. Word has length 171 [2021-11-03 06:01:00,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:00,902 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1031 transitions. [2021-11-03 06:01:00,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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) [2021-11-03 06:01:00,902 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1031 transitions. [2021-11-03 06:01:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-03 06:01:00,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:00,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:00,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:01,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:01,120 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:01:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash 416222354, now seen corresponding path program 2 times [2021-11-03 06:01:01,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:01,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30798152] [2021-11-03 06:01:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:01,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:01,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:01,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908297879] [2021-11-03 06:01:01,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:01:01,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:01,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:01,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:01,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 06:01:01,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:01:01,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 06:01:01,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:01:01,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:01:03,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:03,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30798152] [2021-11-03 06:01:03,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:03,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908297879] [2021-11-03 06:01:03,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908297879] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:03,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:03,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 06:01:03,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926528310] [2021-11-03 06:01:03,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 06:01:03,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 06:01:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:01:03,105 INFO L87 Difference]: Start difference. First operand 847 states and 1031 transitions. Second operand has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 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) [2021-11-03 06:01:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:05,839 INFO L93 Difference]: Finished difference Result 1759 states and 2257 transitions. [2021-11-03 06:01:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 06:01:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 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 195 [2021-11-03 06:01:05,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:05,845 INFO L225 Difference]: With dead ends: 1759 [2021-11-03 06:01:05,846 INFO L226 Difference]: Without dead ends: 979 [2021-11-03 06:01:05,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1114.65ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:01:05,847 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2070.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2554.88ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:05,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3645 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [602 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 2554.88ms Time] [2021-11-03 06:01:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-03 06:01:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 979. [2021-11-03 06:01:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 963 states have (on average 1.2076843198338525) internal successors, (1163), 978 states have internal predecessors, (1163), 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) [2021-11-03 06:01:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1163 transitions. [2021-11-03 06:01:05,867 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1163 transitions. Word has length 195 [2021-11-03 06:01:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:05,868 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1163 transitions. [2021-11-03 06:01:05,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 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) [2021-11-03 06:01:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1163 transitions. [2021-11-03 06:01:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-03 06:01:05,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:05,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:05,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:06,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-03 06:01:06,084 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:01:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1136112334, now seen corresponding path program 3 times [2021-11-03 06:01:06,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:06,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758704394] [2021-11-03 06:01:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:06,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:06,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:06,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520523167] [2021-11-03 06:01:06,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:01:06,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:06,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:06,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 06:01:06,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:01:06,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:06,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:01:06,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-11-03 06:01:06,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:06,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:06,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758704394] [2021-11-03 06:01:06,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:06,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520523167] [2021-11-03 06:01:06,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520523167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:06,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:06,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:01:06,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905098171] [2021-11-03 06:01:06,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:01:06,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:01:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:06,708 INFO L87 Difference]: Start difference. First operand 979 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:01:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:07,688 INFO L93 Difference]: Finished difference Result 2139 states and 2607 transitions. [2021-11-03 06:01:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:01:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 239 [2021-11-03 06:01:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:07,692 INFO L225 Difference]: With dead ends: 2139 [2021-11-03 06:01:07,692 INFO L226 Difference]: Without dead ends: 1297 [2021-11-03 06:01:07,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:07,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 767.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 937.18ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:07,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [4 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 937.18ms Time] [2021-11-03 06:01:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-03 06:01:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1140. [2021-11-03 06:01:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1124 states have (on average 1.2366548042704626) internal successors, (1390), 1139 states have internal predecessors, (1390), 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) [2021-11-03 06:01:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1390 transitions. [2021-11-03 06:01:07,727 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1390 transitions. Word has length 239 [2021-11-03 06:01:07,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:07,727 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1390 transitions. [2021-11-03 06:01:07,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:01:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1390 transitions. [2021-11-03 06:01:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-03 06:01:07,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:07,729 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:07,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-03 06:01:07,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-03 06:01:07,938 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:01:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316862, now seen corresponding path program 1 times [2021-11-03 06:01:07,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:07,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692009589] [2021-11-03 06:01:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:07,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:07,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:07,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273779079] [2021-11-03 06:01:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:07,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:07,957 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:07,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 06:01:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:08,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 06:01:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-03 06:01:09,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-03 06:01:14,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:14,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692009589] [2021-11-03 06:01:14,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:14,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273779079] [2021-11-03 06:01:14,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273779079] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:14,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:14,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-03 06:01:14,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225596485] [2021-11-03 06:01:14,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-03 06:01:14,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:14,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-03 06:01:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:01:14,397 INFO L87 Difference]: Start difference. First operand 1140 states and 1390 transitions. Second operand has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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) [2021-11-03 06:01:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:16,890 INFO L93 Difference]: Finished difference Result 2284 states and 2920 transitions. [2021-11-03 06:01:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 06:01:16,891 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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 334 [2021-11-03 06:01:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:16,894 INFO L225 Difference]: With dead ends: 2284 [2021-11-03 06:01:16,894 INFO L226 Difference]: Without dead ends: 1278 [2021-11-03 06:01:16,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4951.40ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:01:16,897 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1684.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.74ms SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2118.96ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:16,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2852 Unknown, 0 Unchecked, 5.74ms Time], IncrementalHoareTripleChecker [847 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 2118.96ms Time] [2021-11-03 06:01:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-03 06:01:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-03 06:01:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1262 states have (on average 1.2107765451664025) internal successors, (1528), 1277 states have internal predecessors, (1528), 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) [2021-11-03 06:01:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1528 transitions. [2021-11-03 06:01:16,923 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1528 transitions. Word has length 334 [2021-11-03 06:01:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:16,924 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1528 transitions. [2021-11-03 06:01:16,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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) [2021-11-03 06:01:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1528 transitions. [2021-11-03 06:01:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-03 06:01:16,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:16,926 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:16,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:17,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:17,140 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:01:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1833055330, now seen corresponding path program 2 times [2021-11-03 06:01:17,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:17,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753261517] [2021-11-03 06:01:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:17,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:17,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:17,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452229208] [2021-11-03 06:01:17,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:01:17,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:17,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:17,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 06:01:17,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:01:17,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:17,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-03 06:01:17,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-03 06:01:21,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-03 06:01:51,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:51,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753261517] [2021-11-03 06:01:51,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:51,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452229208] [2021-11-03 06:01:51,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452229208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:51,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:51,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 184 [2021-11-03 06:01:51,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526187585] [2021-11-03 06:01:51,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-03 06:01:51,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-03 06:01:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-03 06:01:51,326 INFO L87 Difference]: Start difference. First operand 1278 states and 1528 transitions. Second operand has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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) [2021-11-03 06:02:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:02:06,879 INFO L93 Difference]: Finished difference Result 2652 states and 3426 transitions. [2021-11-03 06:02:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-03 06:02:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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 426 [2021-11-03 06:02:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:02:06,887 INFO L225 Difference]: With dead ends: 2652 [2021-11-03 06:02:06,887 INFO L226 Difference]: Without dead ends: 1554 [2021-11-03 06:02:06,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32146.94ms TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-03 06:02:06,892 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 5048 mSolverCounterSat, 1336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9368.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.38ms SdHoareTripleChecker+Time, 1336 IncrementalHoareTripleChecker+Valid, 5048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12966.19ms IncrementalHoareTripleChecker+Time [2021-11-03 06:02:06,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6384 Unknown, 0 Unchecked, 22.38ms Time], IncrementalHoareTripleChecker [1336 Valid, 5048 Invalid, 0 Unknown, 0 Unchecked, 12966.19ms Time] [2021-11-03 06:02:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-03 06:02:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-03 06:02:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1538 states have (on average 1.1729518855656698) internal successors, (1804), 1553 states have internal predecessors, (1804), 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) [2021-11-03 06:02:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1804 transitions. [2021-11-03 06:02:06,956 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1804 transitions. Word has length 426 [2021-11-03 06:02:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:02:06,956 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1804 transitions. [2021-11-03 06:02:06,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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) [2021-11-03 06:02:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1804 transitions. [2021-11-03 06:02:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-03 06:02:06,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:02:06,960 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:02:06,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-03 06:02:07,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:02:07,180 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:02:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:02:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2138539426, now seen corresponding path program 3 times [2021-11-03 06:02:07,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:02:07,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148758407] [2021-11-03 06:02:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:02:07,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:02:07,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:02:07,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420475746] [2021-11-03 06:02:07,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:02:07,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:02:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:02:07,220 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:02:07,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-03 06:02:07,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:02:07,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:02:07,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:02:07,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:02:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35286 trivial. 0 not checked. [2021-11-03 06:02:08,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:02:08,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:02:08,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148758407] [2021-11-03 06:02:08,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:02:08,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420475746] [2021-11-03 06:02:08,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420475746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:02:08,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:02:08,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:02:08,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756100155] [2021-11-03 06:02:08,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:02:08,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:02:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:02:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:02:08,665 INFO L87 Difference]: Start difference. First operand 1554 states and 1804 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2021-11-03 06:02:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:02:09,658 INFO L93 Difference]: Finished difference Result 2357 states and 2769 transitions. [2021-11-03 06:02:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:02:09,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 610 [2021-11-03 06:02:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:02:09,663 INFO L225 Difference]: With dead ends: 2357 [2021-11-03 06:02:09,664 INFO L226 Difference]: Without dead ends: 1156 [2021-11-03 06:02:09,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:02:09,666 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 987 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 730.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 937.96ms IncrementalHoareTripleChecker+Time [2021-11-03 06:02:09,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 0 Invalid, 669 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 937.96ms Time] [2021-11-03 06:02:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-03 06:02:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2021-11-03 06:02:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1140 states have (on average 1.169298245614035) internal successors, (1333), 1155 states have internal predecessors, (1333), 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) [2021-11-03 06:02:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1333 transitions. [2021-11-03 06:02:09,696 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1333 transitions. Word has length 610 [2021-11-03 06:02:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:02:09,697 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1333 transitions. [2021-11-03 06:02:09,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2021-11-03 06:02:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1333 transitions. [2021-11-03 06:02:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-03 06:02:09,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:02:09,700 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:02:09,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-03 06:02:09,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:02:09,920 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:02:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:02:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1511974763, now seen corresponding path program 1 times [2021-11-03 06:02:09,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:02:09,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70607728] [2021-11-03 06:02:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:02:09,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:02:09,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:02:09,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308829444] [2021-11-03 06:02:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:02:09,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:02:09,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:02:09,958 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:02:09,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 06:02:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:02:10,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 185 conjunts are in the unsatisfiable core [2021-11-03 06:02:10,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:02:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 16653 refuted. 0 times theorem prover too weak. 18633 trivial. 0 not checked. [2021-11-03 06:02:22,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15