./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_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_SFH_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 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 06:45:34,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 06:45:34,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 06:45:34,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 06:45:34,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 06:45:34,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 06:45:34,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 06:45:34,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 06:45:34,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 06:45:34,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 06:45:34,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 06:45:34,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 06:45:34,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 06:45:34,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 06:45:34,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 06:45:34,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 06:45:34,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 06:45:34,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 06:45:34,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 06:45:34,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 06:45:34,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 06:45:34,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 06:45:34,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 06:45:34,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 06:45:34,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 06:45:34,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 06:45:34,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 06:45:34,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 06:45:34,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 06:45:34,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 06:45:34,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 06:45:34,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 06:45:34,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 06:45:34,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 06:45:34,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 06:45:34,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 06:45:34,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 06:45:34,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 06:45:34,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 06:45:34,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 06:45:34,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 06:45:34,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 06:45:34,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 06:45:34,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 06:45:34,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 06:45:34,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 06:45:34,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 06:45:34,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 06:45:34,165 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 06:45:34,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 06:45:34,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 06:45:34,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 06:45:34,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:45:34,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 06:45:34,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 06:45:34,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 06:45:34,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 06:45:34,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 06:45:34,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 06:45:34,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 06:45:34,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 06:45:34,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 06:45:34,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2021-11-03 06:45:34,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 06:45:34,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 06:45:34,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 06:45:34,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 06:45:34,325 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 06:45:34,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-11-03 06:45:34,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b791fe820/1d00ad0371144556a533daabaf874df5/FLAG02b35fd55 [2021-11-03 06:45:34,836 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 06:45:34,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-11-03 06:45:34,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b791fe820/1d00ad0371144556a533daabaf874df5/FLAG02b35fd55 [2021-11-03 06:45:35,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b791fe820/1d00ad0371144556a533daabaf874df5 [2021-11-03 06:45:35,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 06:45:35,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 06:45:35,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 06:45:35,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 06:45:35,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 06:45:35,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:35,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5347332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35, skipping insertion in model container [2021-11-03 06:45:35,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:35,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 06:45:35,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 06:45:35,531 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_SFH_test10-2.i[33022,33035] [2021-11-03 06:45:35,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:45:35,700 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 06:45:35,717 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_SFH_test10-2.i[33022,33035] [2021-11-03 06:45:35,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:45:35,861 INFO L208 MainTranslator]: Completed translation [2021-11-03 06:45:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35 WrapperNode [2021-11-03 06:45:35,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 06:45:35,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 06:45:35,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 06:45:35,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 06:45:35,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:35,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 06:45:36,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 06:45:36,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 06:45:36,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 06:45:36,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 06:45:36,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 06:45:36,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 06:45:36,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 06:45:36,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (1/1) ... [2021-11-03 06:45:36,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:45:36,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:36,148 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 06:45:36,166 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 06:45:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 06:45:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 06:45:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 06:45:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 06:45:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 06:45:36,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 06:45:36,974 INFO L299 CfgBuilder]: Removed 216 assume(true) statements. [2021-11-03 06:45:36,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:45:36 BoogieIcfgContainer [2021-11-03 06:45:36,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 06:45:36,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 06:45:36,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 06:45:36,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 06:45:36,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 06:45:35" (1/3) ... [2021-11-03 06:45:36,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ffeece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:45:36, skipping insertion in model container [2021-11-03 06:45:36,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:45:35" (2/3) ... [2021-11-03 06:45:36,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ffeece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:45:36, skipping insertion in model container [2021-11-03 06:45:36,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:45:36" (3/3) ... [2021-11-03 06:45:36,984 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-2.i [2021-11-03 06:45:36,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 06:45:36,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-03 06:45:37,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 06:45:37,035 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 06:45:37,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-03 06:45:37,054 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 06:45:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 06:45:37,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:37,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:45:37,059 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 06:45:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-03 06:45:37,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:37,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870386891] [2021-11-03 06:45:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:37,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:37,201 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 06:45:37,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:37,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870386891] [2021-11-03 06:45:37,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870386891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:37,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:37,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 06:45:37,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928301945] [2021-11-03 06:45:37,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 06:45:37,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 06:45:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 06:45:37,227 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 06:45:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:38,058 INFO L93 Difference]: Finished difference Result 996 states and 1678 transitions. [2021-11-03 06:45:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 06:45:38,065 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 06:45:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:38,081 INFO L225 Difference]: With dead ends: 996 [2021-11-03 06:45:38,081 INFO L226 Difference]: Without dead ends: 465 [2021-11-03 06:45:38,089 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 06:45:38,094 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 575.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 766.90ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:38,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 766.90ms Time] [2021-11-03 06:45:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-03 06:45:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-03 06:45:38,149 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 06:45:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-03 06:45:38,152 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-03 06:45:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:38,152 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-03 06:45:38,152 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 06:45:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-03 06:45:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 06:45:38,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:38,155 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 06:45:38,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 06:45:38,156 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 06:45:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-03 06:45:38,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:38,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906832567] [2021-11-03 06:45:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:38,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:38,228 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 06:45:38,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:38,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906832567] [2021-11-03 06:45:38,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906832567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:38,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:38,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:45:38,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961524613] [2021-11-03 06:45:38,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:45:38,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:45:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:45:38,230 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 06:45:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:39,545 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-03 06:45:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:45:39,545 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 06:45:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:39,547 INFO L225 Difference]: With dead ends: 831 [2021-11-03 06:45:39,547 INFO L226 Difference]: Without dead ends: 540 [2021-11-03 06:45:39,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:45:39,550 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1069.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1270.35ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:39,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1825 Unknown, 0 Unchecked, 6.22ms Time], IncrementalHoareTripleChecker [2 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1270.35ms Time] [2021-11-03 06:45:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-03 06:45:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-03 06:45:39,576 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 06:45:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-03 06:45:39,577 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-03 06:45:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:39,577 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-03 06:45:39,577 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 06:45:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-03 06:45:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:45:39,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:39,580 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 06:45:39,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 06:45:39,580 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 06:45:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-03 06:45:39,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:39,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141213235] [2021-11-03 06:45:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:39,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:39,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:39,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549960886] [2021-11-03 06:45:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:39,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:39,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:39,631 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 06:45:39,632 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 06:45:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:39,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:39,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:39,992 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 06:45:39,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:39,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:39,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141213235] [2021-11-03 06:45:39,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:39,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549960886] [2021-11-03 06:45:39,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549960886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:39,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:39,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:45:39,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5461355] [2021-11-03 06:45:39,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:45:39,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:45:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:39,996 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 06:45:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:40,877 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-03 06:45:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:45:40,878 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 06:45:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:40,879 INFO L225 Difference]: With dead ends: 951 [2021-11-03 06:45:40,879 INFO L226 Difference]: Without dead ends: 488 [2021-11-03 06:45:40,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:40,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 703.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 854.31ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:40,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 854.31ms Time] [2021-11-03 06:45:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-03 06:45:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-03 06:45:40,889 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 06:45:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-03 06:45:40,890 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-03 06:45:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:40,891 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-03 06:45:40,891 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 06:45:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-03 06:45:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:45:40,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:40,893 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 06:45:40,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 06:45:41,112 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 06:45:41,112 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 06:45:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:41,113 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-03 06:45:41,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:41,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565323867] [2021-11-03 06:45:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:41,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:41,132 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:41,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230321252] [2021-11-03 06:45:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:41,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:41,136 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 06:45:41,137 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 06:45:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:41,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:41,414 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 06:45:41,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:41,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:41,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565323867] [2021-11-03 06:45:41,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:41,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230321252] [2021-11-03 06:45:41,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230321252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:41,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:41,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:45:41,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990310239] [2021-11-03 06:45:41,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:45:41,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:45:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:41,417 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 06:45:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:43,196 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-03 06:45:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:45:43,196 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 06:45:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:43,198 INFO L225 Difference]: With dead ends: 787 [2021-11-03 06:45:43,198 INFO L226 Difference]: Without dead ends: 508 [2021-11-03 06:45:43,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:43,199 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1587.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.29ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1756.50ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:43,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.29ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1756.50ms Time] [2021-11-03 06:45:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-03 06:45:43,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-03 06:45:43,206 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 06:45:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-03 06:45:43,207 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-03 06:45:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:43,208 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-03 06:45:43,208 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 06:45:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-03 06:45:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:45:43,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:43,209 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 06:45:43,227 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 06:45:43,423 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 06:45:43,424 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 06:45:43,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-03 06:45:43,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:43,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946332482] [2021-11-03 06:45:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:43,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:43,439 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:43,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622392480] [2021-11-03 06:45:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:43,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:43,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:43,480 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 06:45:43,480 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 06:45:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:43,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:43,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:43,789 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 06:45:43,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:43,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:43,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946332482] [2021-11-03 06:45:43,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:43,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622392480] [2021-11-03 06:45:43,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622392480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:43,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:43,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:45:43,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639105802] [2021-11-03 06:45:43,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:45:43,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:43,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:45:43,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:45:43,792 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 06:45:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:44,979 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-03 06:45:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:45:44,980 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 06:45:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:44,982 INFO L225 Difference]: With dead ends: 1086 [2021-11-03 06:45:44,982 INFO L226 Difference]: Without dead ends: 583 [2021-11-03 06:45:44,983 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 06:45:44,983 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 925.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1152.37ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:44,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 0 Invalid, 1574 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [24 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1152.37ms Time] [2021-11-03 06:45:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-03 06:45:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-03 06:45:44,991 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 06:45:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-03 06:45:44,993 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-03 06:45:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:44,994 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-03 06:45:44,994 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 06:45:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-03 06:45:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:45:44,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:44,996 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 06:45:45,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 06:45:45,207 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 06:45:45,208 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 06:45:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-03 06:45:45,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:45,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597190579] [2021-11-03 06:45:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:45,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:45,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:45,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705895976] [2021-11-03 06:45:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:45,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:45,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:45,225 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 06:45:45,227 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 06:45:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:45,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:45,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:45,507 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 06:45:45,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:45,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:45,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597190579] [2021-11-03 06:45:45,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:45,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705895976] [2021-11-03 06:45:45,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705895976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:45,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:45,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:45:45,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511435630] [2021-11-03 06:45:45,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:45:45,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:45,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:45:45,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:45:45,510 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 06:45:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:46,558 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-03 06:45:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:45:46,559 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 06:45:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:46,561 INFO L225 Difference]: With dead ends: 761 [2021-11-03 06:45:46,561 INFO L226 Difference]: Without dead ends: 480 [2021-11-03 06:45:46,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:45:46,562 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 848.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1023.92ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:46,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1428 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [24 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1023.92ms Time] [2021-11-03 06:45:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-03 06:45:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-03 06:45:46,571 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 06:45:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-03 06:45:46,572 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-03 06:45:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:46,573 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-03 06:45:46,574 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 06:45:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-03 06:45:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:45:46,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:46,575 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:45:46,595 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 06:45:46,779 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 06:45:46,780 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 06:45:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-03 06:45:46,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:46,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936973555] [2021-11-03 06:45:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:46,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:46,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:46,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251710007] [2021-11-03 06:45:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:46,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:46,798 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 06:45:46,799 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 06:45:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:46,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:45:46,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:47,177 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 06:45:47,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:47,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:47,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936973555] [2021-11-03 06:45:47,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:47,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251710007] [2021-11-03 06:45:47,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251710007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:47,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:47,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:45:47,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889215712] [2021-11-03 06:45:47,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:45:47,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:47,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:45:47,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:47,180 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 06:45:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:48,056 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-03 06:45:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:45:48,056 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 06:45:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:48,058 INFO L225 Difference]: With dead ends: 1231 [2021-11-03 06:45:48,058 INFO L226 Difference]: Without dead ends: 756 [2021-11-03 06:45:48,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:48,060 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 676.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 853.79ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:48,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1178 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [4 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 853.79ms Time] [2021-11-03 06:45:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-03 06:45:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-03 06:45:48,070 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 06:45:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-03 06:45:48,072 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-03 06:45:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:48,072 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-03 06:45:48,072 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 06:45:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-03 06:45:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 06:45:48,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:48,074 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 06:45:48,097 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 06:45:48,293 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 06:45:48,293 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 06:45:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-03 06:45:48,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:48,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315229594] [2021-11-03 06:45:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:48,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:48,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:48,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605002834] [2021-11-03 06:45:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:48,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:48,315 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 06:45:48,316 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 06:45:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:48,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:48,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:48,601 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 06:45:48,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:48,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:48,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315229594] [2021-11-03 06:45:48,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:48,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605002834] [2021-11-03 06:45:48,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605002834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:48,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:48,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:45:48,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138960725] [2021-11-03 06:45:48,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:45:48,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:48,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:45:48,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:48,606 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 06:45:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:49,343 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2021-11-03 06:45:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:45:49,344 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 06:45:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:49,346 INFO L225 Difference]: With dead ends: 1400 [2021-11-03 06:45:49,346 INFO L226 Difference]: Without dead ends: 727 [2021-11-03 06:45:49,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:49,347 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 594.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 719.71ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:49,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [6 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 719.71ms Time] [2021-11-03 06:45:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-03 06:45:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-03 06:45:49,361 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 06:45:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2021-11-03 06:45:49,362 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2021-11-03 06:45:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:49,363 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2021-11-03 06:45:49,363 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 06:45:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2021-11-03 06:45:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 06:45:49,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:49,364 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 06:45:49,399 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 06:45:49,579 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 06:45:49,579 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 06:45:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2021-11-03 06:45:49,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:49,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295364602] [2021-11-03 06:45:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:49,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:49,600 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:49,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96283189] [2021-11-03 06:45:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:49,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:49,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:49,605 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 06:45:49,606 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 06:45:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:49,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:45:49,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:49,909 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 06:45:49,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:45:50,054 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 06:45:50,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:50,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295364602] [2021-11-03 06:45:50,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:50,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96283189] [2021-11-03 06:45:50,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96283189] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:45:50,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:45:50,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 06:45:50,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522421201] [2021-11-03 06:45:50,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 06:45:50,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 06:45:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:45:50,056 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 06:45:51,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:51,269 INFO L93 Difference]: Finished difference Result 1423 states and 1844 transitions. [2021-11-03 06:45:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 06:45:51,269 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 06:45:51,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:51,272 INFO L225 Difference]: With dead ends: 1423 [2021-11-03 06:45:51,272 INFO L226 Difference]: Without dead ends: 745 [2021-11-03 06:45:51,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.47ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:45:51,273 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 996.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1188.53ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:51,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1813 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [31 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1188.53ms Time] [2021-11-03 06:45:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-03 06:45:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-11-03 06:45:51,282 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 06:45:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 954 transitions. [2021-11-03 06:45:51,283 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 954 transitions. Word has length 106 [2021-11-03 06:45:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:51,283 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 954 transitions. [2021-11-03 06:45:51,284 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 06:45:51,284 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 954 transitions. [2021-11-03 06:45:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 06:45:51,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:51,285 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 06:45:51,311 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 06:45:51,502 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 06:45:51,503 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 06:45:51,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash -899210817, now seen corresponding path program 2 times [2021-11-03 06:45:51,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:51,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495433475] [2021-11-03 06:45:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:51,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:51,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:51,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509257545] [2021-11-03 06:45:51,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:45:51,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:51,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:51,515 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 06:45:51,516 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 06:45:51,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:45:51,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:45:51,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 06:45:51,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:51,895 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 06:45:51,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:45:52,058 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 06:45:52,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:52,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495433475] [2021-11-03 06:45:52,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:52,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509257545] [2021-11-03 06:45:52,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509257545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:45:52,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:45:52,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 06:45:52,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235324059] [2021-11-03 06:45:52,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 06:45:52,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:52,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 06:45:52,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:45:52,060 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 06:45:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:53,873 INFO L93 Difference]: Finished difference Result 1474 states and 1913 transitions. [2021-11-03 06:45:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 06:45:53,874 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 06:45:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:53,876 INFO L225 Difference]: With dead ends: 1474 [2021-11-03 06:45:53,876 INFO L226 Difference]: Without dead ends: 781 [2021-11-03 06:45:53,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.49ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:45:53,878 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1465.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1774.70ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:53,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3070 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [92 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1774.70ms Time] [2021-11-03 06:45:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-03 06:45:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-03 06:45:53,891 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 06:45:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 990 transitions. [2021-11-03 06:45:53,893 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 990 transitions. Word has length 112 [2021-11-03 06:45:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:53,893 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 990 transitions. [2021-11-03 06:45:53,893 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 06:45:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 990 transitions. [2021-11-03 06:45:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 06:45:53,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:53,895 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 06:45:53,924 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 06:45:54,119 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 06:45:54,119 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 06:45:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash 758407135, now seen corresponding path program 3 times [2021-11-03 06:45:54,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:54,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664097186] [2021-11-03 06:45:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:54,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:54,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:54,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705940959] [2021-11-03 06:45:54,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:45:54,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:54,131 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 06:45:54,132 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 06:45:54,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:45:54,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:45:54,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 06:45:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:54,334 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 06:45:54,385 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 06:45:54,535 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 06:45:54,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:54,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:54,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664097186] [2021-11-03 06:45:54,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:54,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705940959] [2021-11-03 06:45:54,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705940959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:54,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:54,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 06:45:54,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029726202] [2021-11-03 06:45:54,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 06:45:54,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 06:45:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:45:54,537 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 06:45:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:56,052 INFO L93 Difference]: Finished difference Result 1452 states and 1842 transitions. [2021-11-03 06:45:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:45:56,052 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 06:45:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:56,062 INFO L225 Difference]: With dead ends: 1452 [2021-11-03 06:45:56,062 INFO L226 Difference]: Without dead ends: 781 [2021-11-03 06:45:56,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.00ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 06:45:56,063 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1205.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1472.42ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:56,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 2387 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [12 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1472.42ms Time] [2021-11-03 06:45:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-03 06:45:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-03 06:45:56,075 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 06:45:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-03 06:45:56,076 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 124 [2021-11-03 06:45:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:56,077 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-03 06:45:56,077 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 06:45:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-03 06:45:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:45:56,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:56,079 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 06:45:56,111 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 06:45:56,296 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 06:45:56,297 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 06:45:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1889355962, now seen corresponding path program 1 times [2021-11-03 06:45:56,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:56,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717706521] [2021-11-03 06:45:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:56,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:56,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:56,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908855448] [2021-11-03 06:45:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:56,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:56,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:56,316 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 06:45:56,316 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 06:45:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:56,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:56,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:56,721 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 06:45:56,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:56,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:56,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717706521] [2021-11-03 06:45:56,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:56,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908855448] [2021-11-03 06:45:56,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908855448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:56,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:56,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:45:56,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450869857] [2021-11-03 06:45:56,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:45:56,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:45:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:56,723 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 06:45:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:57,596 INFO L93 Difference]: Finished difference Result 1586 states and 2019 transitions. [2021-11-03 06:45:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:45:57,596 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 06:45:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:57,598 INFO L225 Difference]: With dead ends: 1586 [2021-11-03 06:45:57,598 INFO L226 Difference]: Without dead ends: 823 [2021-11-03 06:45:57,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:45:57,600 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 686.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 851.62ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:57,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1205 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [28 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 851.62ms Time] [2021-11-03 06:45:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-03 06:45:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2021-11-03 06:45:57,610 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 06:45:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1029 transitions. [2021-11-03 06:45:57,611 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1029 transitions. Word has length 171 [2021-11-03 06:45:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:57,612 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1029 transitions. [2021-11-03 06:45:57,612 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 06:45:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1029 transitions. [2021-11-03 06:45:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:45:57,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:57,613 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 06:45:57,632 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 06:45:57,826 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 06:45:57,826 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 06:45:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash 508631876, now seen corresponding path program 1 times [2021-11-03 06:45:57,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:57,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258817277] [2021-11-03 06:45:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:57,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:57,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:57,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058561732] [2021-11-03 06:45:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:57,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:57,849 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 06:45:57,850 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 06:45:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:58,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:45:58,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:58,251 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 06:45:58,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:58,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:58,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258817277] [2021-11-03 06:45:58,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:58,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058561732] [2021-11-03 06:45:58,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058561732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:58,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:58,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:45:58,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027013081] [2021-11-03 06:45:58,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:45:58,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:45:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:45:58,253 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 06:45:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:45:59,063 INFO L93 Difference]: Finished difference Result 1580 states and 1984 transitions. [2021-11-03 06:45:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:45:59,065 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 06:45:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:45:59,067 INFO L225 Difference]: With dead ends: 1580 [2021-11-03 06:45:59,067 INFO L226 Difference]: Without dead ends: 795 [2021-11-03 06:45:59,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:45:59,068 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 644.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 783.91ms IncrementalHoareTripleChecker+Time [2021-11-03 06:45:59,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [25 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 783.91ms Time] [2021-11-03 06:45:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-03 06:45:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2021-11-03 06:45:59,078 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 06:45:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 987 transitions. [2021-11-03 06:45:59,080 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 987 transitions. Word has length 171 [2021-11-03 06:45:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:45:59,080 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 987 transitions. [2021-11-03 06:45:59,080 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 06:45:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 987 transitions. [2021-11-03 06:45:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:45:59,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:45:59,081 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 06:45:59,101 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 06:45:59,295 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 06:45:59,296 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 06:45:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:45:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash -288240300, now seen corresponding path program 1 times [2021-11-03 06:45:59,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:45:59,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817098347] [2021-11-03 06:45:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:59,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:45:59,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:45:59,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546181023] [2021-11-03 06:45:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:45:59,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:45:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:45:59,308 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 06:45:59,309 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 06:45:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:45:59,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:45:59,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:45:59,733 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 06:45:59,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:45:59,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:45:59,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817098347] [2021-11-03 06:45:59,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:45:59,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546181023] [2021-11-03 06:45:59,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546181023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:45:59,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:45:59,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 06:45:59,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839499751] [2021-11-03 06:45:59,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 06:45:59,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:45:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 06:45:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:45:59,735 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 06:46:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:46:01,481 INFO L93 Difference]: Finished difference Result 2335 states and 2912 transitions. [2021-11-03 06:46:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:46:01,481 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 06:46:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:46:01,485 INFO L225 Difference]: With dead ends: 2335 [2021-11-03 06:46:01,485 INFO L226 Difference]: Without dead ends: 1580 [2021-11-03 06:46:01,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:46:01,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 568 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1421.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1702.63ms IncrementalHoareTripleChecker+Time [2021-11-03 06:46:01,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 0 Invalid, 2393 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [24 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1702.63ms Time] [2021-11-03 06:46:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-11-03 06:46:01,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 839. [2021-11-03 06:46:01,500 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 06:46:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1037 transitions. [2021-11-03 06:46:01,501 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1037 transitions. Word has length 171 [2021-11-03 06:46:01,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:46:01,501 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1037 transitions. [2021-11-03 06:46:01,502 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 06:46:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1037 transitions. [2021-11-03 06:46:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:46:01,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:46:01,503 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 06:46:01,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 06:46:01,712 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 06:46:01,712 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 06:46:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:46:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536166, now seen corresponding path program 1 times [2021-11-03 06:46:01,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:46:01,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731004480] [2021-11-03 06:46:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:01,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:46:01,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:46:01,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563152575] [2021-11-03 06:46:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:01,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:46:01,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:46:01,724 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 06:46:01,725 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 06:46:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:46:01,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:46:01,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:46:02,137 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 06:46:02,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:46:02,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:46:02,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731004480] [2021-11-03 06:46:02,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:46:02,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563152575] [2021-11-03 06:46:02,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563152575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:46:02,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:46:02,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:46:02,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515024336] [2021-11-03 06:46:02,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:46:02,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:46:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:46:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:46:02,140 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 06:46:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:46:02,977 INFO L93 Difference]: Finished difference Result 1587 states and 1971 transitions. [2021-11-03 06:46:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:46:02,977 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 06:46:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:46:02,979 INFO L225 Difference]: With dead ends: 1587 [2021-11-03 06:46:02,979 INFO L226 Difference]: Without dead ends: 775 [2021-11-03 06:46:02,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:46:02,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 647.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 807.70ms IncrementalHoareTripleChecker+Time [2021-11-03 06:46:02,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [7 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 807.70ms Time] [2021-11-03 06:46:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-03 06:46:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-11-03 06:46:03,003 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 06:46:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 959 transitions. [2021-11-03 06:46:03,005 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 959 transitions. Word has length 171 [2021-11-03 06:46:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:46:03,005 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 959 transitions. [2021-11-03 06:46:03,005 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 06:46:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 959 transitions. [2021-11-03 06:46:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:46:03,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:46:03,006 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 06:46:03,026 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 06:46:03,219 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 06:46:03,220 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 06:46:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:46:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2109747538, now seen corresponding path program 1 times [2021-11-03 06:46:03,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:46:03,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826672183] [2021-11-03 06:46:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:03,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:46:03,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:46:03,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996295243] [2021-11-03 06:46:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:03,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:46:03,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:46:03,232 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 06:46:03,233 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 06:46:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:46:03,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 06:46:03,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:46:03,718 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 06:46:03,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:46:04,123 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 06:46:04,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:46:04,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826672183] [2021-11-03 06:46:04,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:46:04,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996295243] [2021-11-03 06:46:04,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996295243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:46:04,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:46:04,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 06:46:04,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437309632] [2021-11-03 06:46:04,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 06:46:04,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:46:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 06:46:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:46:04,130 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 06:46:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:46:05,482 INFO L93 Difference]: Finished difference Result 1567 states and 2005 transitions. [2021-11-03 06:46:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 06:46:05,483 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 06:46:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:46:05,485 INFO L225 Difference]: With dead ends: 1567 [2021-11-03 06:46:05,485 INFO L226 Difference]: Without dead ends: 847 [2021-11-03 06:46:05,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 238.85ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:46:05,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1054.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.22ms SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1307.38ms IncrementalHoareTripleChecker+Time [2021-11-03 06:46:05,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2052 Unknown, 0 Unchecked, 4.22ms Time], IncrementalHoareTripleChecker [243 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1307.38ms Time] [2021-11-03 06:46:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-03 06:46:05,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-11-03 06:46:05,499 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 06:46:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1031 transitions. [2021-11-03 06:46:05,500 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1031 transitions. Word has length 171 [2021-11-03 06:46:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:46:05,500 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1031 transitions. [2021-11-03 06:46:05,501 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 06:46:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1031 transitions. [2021-11-03 06:46:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-03 06:46:05,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:46:05,502 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 06:46:05,524 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 06:46:05,724 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 06:46:05,725 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 06:46:05,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:46:05,725 INFO L85 PathProgramCache]: Analyzing trace with hash 416222354, now seen corresponding path program 2 times [2021-11-03 06:46:05,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:46:05,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616248641] [2021-11-03 06:46:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:05,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:46:05,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:46:05,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507028745] [2021-11-03 06:46:05,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:46:05,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:46:05,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:46:05,740 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 06:46:05,740 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 06:46:05,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:46:05,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:46:05,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 06:46:05,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:46:06,468 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 06:46:06,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:46:07,566 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 06:46:07,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:46:07,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616248641] [2021-11-03 06:46:07,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:46:07,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507028745] [2021-11-03 06:46:07,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507028745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:46:07,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:46:07,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 06:46:07,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621568843] [2021-11-03 06:46:07,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 06:46:07,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:46:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 06:46:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:46:07,568 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 06:46:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:46:09,896 INFO L93 Difference]: Finished difference Result 1759 states and 2257 transitions. [2021-11-03 06:46:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 06:46:09,896 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 06:46:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:46:09,899 INFO L225 Difference]: With dead ends: 1759 [2021-11-03 06:46:09,899 INFO L226 Difference]: Without dead ends: 979 [2021-11-03 06:46:09,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1060.98ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:46:09,909 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1764.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.87ms SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2209.72ms IncrementalHoareTripleChecker+Time [2021-11-03 06:46:09,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3645 Unknown, 0 Unchecked, 7.87ms Time], IncrementalHoareTripleChecker [602 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 2209.72ms Time] [2021-11-03 06:46:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-03 06:46:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 979. [2021-11-03 06:46:09,925 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 06:46:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1163 transitions. [2021-11-03 06:46:09,926 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1163 transitions. Word has length 195 [2021-11-03 06:46:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:46:09,926 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1163 transitions. [2021-11-03 06:46:09,927 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 06:46:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1163 transitions. [2021-11-03 06:46:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-03 06:46:09,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:46:09,928 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 06:46:09,950 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 06:46:10,146 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 06:46:10,147 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 06:46:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:46:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1136112334, now seen corresponding path program 3 times [2021-11-03 06:46:10,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:46:10,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466770773] [2021-11-03 06:46:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:10,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:46:10,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:46:10,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341360334] [2021-11-03 06:46:10,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:46:10,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:46:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:46:10,162 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 06:46:10,163 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 06:46:10,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:46:10,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:46:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:46:10,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:46:10,726 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 06:46:10,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:46:10,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:46:10,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466770773] [2021-11-03 06:46:10,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:46:10,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341360334] [2021-11-03 06:46:10,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341360334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:46:10,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:46:10,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:46:10,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447754458] [2021-11-03 06:46:10,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:46:10,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:46:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:46:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:46:10,729 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 06:46:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:46:11,630 INFO L93 Difference]: Finished difference Result 2139 states and 2607 transitions. [2021-11-03 06:46:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:46:11,631 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 06:46:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:46:11,634 INFO L225 Difference]: With dead ends: 2139 [2021-11-03 06:46:11,634 INFO L226 Difference]: Without dead ends: 1297 [2021-11-03 06:46:11,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:46:11,635 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 705.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 862.16ms IncrementalHoareTripleChecker+Time [2021-11-03 06:46:11,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [4 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 862.16ms Time] [2021-11-03 06:46:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-03 06:46:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1140. [2021-11-03 06:46:11,655 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 06:46:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1390 transitions. [2021-11-03 06:46:11,656 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1390 transitions. Word has length 239 [2021-11-03 06:46:11,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:46:11,656 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1390 transitions. [2021-11-03 06:46:11,656 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 06:46:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1390 transitions. [2021-11-03 06:46:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-03 06:46:11,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:46:11,658 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 06:46:11,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-03 06:46:11,871 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 06:46:11,871 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 06:46:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:46:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316862, now seen corresponding path program 1 times [2021-11-03 06:46:11,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:46:11,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075441768] [2021-11-03 06:46:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:11,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:46:11,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:46:11,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702641951] [2021-11-03 06:46:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:11,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:46:11,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:46:11,895 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 06:46:11,896 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 06:46:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:46:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 06:46:12,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:46:13,484 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 06:46:13,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:46:17,988 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 06:46:17,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:46:17,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075441768] [2021-11-03 06:46:17,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:46:17,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702641951] [2021-11-03 06:46:17,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702641951] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:46:17,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:46:17,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-03 06:46:17,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431251266] [2021-11-03 06:46:17,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-03 06:46:17,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:46:17,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-03 06:46:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:46:17,992 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 06:46:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:46:20,130 INFO L93 Difference]: Finished difference Result 2284 states and 2920 transitions. [2021-11-03 06:46:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 06:46:20,131 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 06:46:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:46:20,134 INFO L225 Difference]: With dead ends: 2284 [2021-11-03 06:46:20,134 INFO L226 Difference]: Without dead ends: 1278 [2021-11-03 06:46:20,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4754.12ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:46:20,137 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1451.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1836.98ms IncrementalHoareTripleChecker+Time [2021-11-03 06:46:20,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2852 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [847 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1836.98ms Time] [2021-11-03 06:46:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-03 06:46:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-03 06:46:20,173 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 06:46:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1528 transitions. [2021-11-03 06:46:20,174 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1528 transitions. Word has length 334 [2021-11-03 06:46:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:46:20,175 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1528 transitions. [2021-11-03 06:46:20,179 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 06:46:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1528 transitions. [2021-11-03 06:46:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-03 06:46:20,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:46:20,181 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 06:46:20,201 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 06:46:20,393 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 06:46:20,395 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 06:46:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:46:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1833055330, now seen corresponding path program 2 times [2021-11-03 06:46:20,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:46:20,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759181704] [2021-11-03 06:46:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:46:20,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:46:20,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:46:20,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655768849] [2021-11-03 06:46:20,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:46:20,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:46:20,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:46:20,422 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 06:46:20,423 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 06:46:20,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:46:20,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:46:20,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-03 06:46:20,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:46:24,312 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 06:46:24,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:46:55,744 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 06:46:55,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:46:55,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759181704] [2021-11-03 06:46:55,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:46:55,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655768849] [2021-11-03 06:46:55,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655768849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:46:55,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:46:55,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 184 [2021-11-03 06:46:55,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123766992] [2021-11-03 06:46:55,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-03 06:46:55,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:46:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-03 06:46:55,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-03 06:46:55,753 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 06:47:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:47:08,217 INFO L93 Difference]: Finished difference Result 2652 states and 3426 transitions. [2021-11-03 06:47:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-03 06:47:08,221 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 06:47:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:47:08,225 INFO L225 Difference]: With dead ends: 2652 [2021-11-03 06:47:08,225 INFO L226 Difference]: Without dead ends: 1554 [2021-11-03 06:47:08,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33235.92ms TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-03 06:47:08,229 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 5048 mSolverCounterSat, 1336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7238.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.03ms SdHoareTripleChecker+Time, 1336 IncrementalHoareTripleChecker+Valid, 5048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9826.95ms IncrementalHoareTripleChecker+Time [2021-11-03 06:47:08,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6384 Unknown, 0 Unchecked, 24.03ms Time], IncrementalHoareTripleChecker [1336 Valid, 5048 Invalid, 0 Unknown, 0 Unchecked, 9826.95ms Time] [2021-11-03 06:47:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-03 06:47:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-03 06:47:08,264 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 06:47:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1804 transitions. [2021-11-03 06:47:08,265 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1804 transitions. Word has length 426 [2021-11-03 06:47:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:47:08,266 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1804 transitions. [2021-11-03 06:47:08,266 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 06:47:08,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1804 transitions. [2021-11-03 06:47:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-03 06:47:08,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:47:08,270 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 06:47:08,295 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 06:47:08,483 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 06:47:08,484 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 06:47:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:47:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2138539426, now seen corresponding path program 3 times [2021-11-03 06:47:08,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:47:08,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221861980] [2021-11-03 06:47:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:47:08,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:47:08,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:47:08,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698421580] [2021-11-03 06:47:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:47:08,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:47:08,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:47:08,510 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 06:47:08,511 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 06:47:08,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:47:08,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:47:08,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:47:08,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:47:09,859 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 06:47:09,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:47:09,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:47:09,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221861980] [2021-11-03 06:47:09,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:47:09,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698421580] [2021-11-03 06:47:09,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698421580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:47:09,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:47:09,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:47:09,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672483173] [2021-11-03 06:47:09,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:47:09,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:47:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:47:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:47:09,861 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 06:47:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:47:10,817 INFO L93 Difference]: Finished difference Result 2357 states and 2769 transitions. [2021-11-03 06:47:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:47:10,818 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 06:47:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:47:10,821 INFO L225 Difference]: With dead ends: 2357 [2021-11-03 06:47:10,821 INFO L226 Difference]: Without dead ends: 1156 [2021-11-03 06:47:10,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:47:10,823 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 987 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 713.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 904.19ms IncrementalHoareTripleChecker+Time [2021-11-03 06:47:10,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 0 Invalid, 669 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 904.19ms Time] [2021-11-03 06:47:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-03 06:47:10,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2021-11-03 06:47:10,867 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 06:47:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1333 transitions. [2021-11-03 06:47:10,868 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1333 transitions. Word has length 610 [2021-11-03 06:47:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:47:10,869 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1333 transitions. [2021-11-03 06:47:10,869 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 06:47:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1333 transitions. [2021-11-03 06:47:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-03 06:47:10,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:47:10,873 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 06:47:10,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-03 06:47:11,083 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 06:47:11,084 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 06:47:11,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:47:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1511974763, now seen corresponding path program 1 times [2021-11-03 06:47:11,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:47:11,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383456154] [2021-11-03 06:47:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:47:11,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:47:11,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:47:11,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945635647] [2021-11-03 06:47:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:47:11,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:47:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:47:11,117 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 06:47:11,118 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 06:47:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:47:11,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 185 conjunts are in the unsatisfiable core [2021-11-03 06:47:11,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:47:23,838 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 06:47:23,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15