./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_mul_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/array-industry-pattern/array_mul_init.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 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 21:26:30,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:26:30,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:26:30,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:26:30,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:26:30,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:26:30,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:26:30,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:26:30,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:26:30,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:26:30,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:26:30,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:26:30,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:26:30,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:26:30,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:26:30,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:26:30,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:26:30,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:26:30,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:26:30,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:26:30,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:26:30,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:26:30,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:26:30,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:26:30,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:26:30,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:26:30,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:26:30,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:26:30,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:26:30,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:26:30,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:26:30,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:26:30,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:26:30,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:26:30,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:26:30,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:26:30,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:26:30,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:26:30,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:26:30,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:26:30,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:26:30,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:26:30,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:26:30,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:26:30,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:26:30,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:26:30,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:26:30,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:26:30,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:26:30,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:26:30,086 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:26:30,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:26:30,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:26:30,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:26:30,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:26:30,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:26:30,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:26:30,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:26:30,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:26:30,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:26:30,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:26:30,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:26:30,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:26:30,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 [2021-12-27 21:26:30,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:26:30,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:26:30,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:26:30,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:26:30,352 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:26:30,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2021-12-27 21:26:30,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a61e63b/75ba9e8c492a4c579c4bc95e5b8c7367/FLAGf32d12051 [2021-12-27 21:26:30,764 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:26:30,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2021-12-27 21:26:30,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a61e63b/75ba9e8c492a4c579c4bc95e5b8c7367/FLAGf32d12051 [2021-12-27 21:26:31,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a61e63b/75ba9e8c492a4c579c4bc95e5b8c7367 [2021-12-27 21:26:31,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:26:31,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:26:31,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:26:31,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:26:31,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:26:31,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ea5a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31, skipping insertion in model container [2021-12-27 21:26:31,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:26:31,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:26:31,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i[807,820] [2021-12-27 21:26:31,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:26:31,293 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:26:31,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i[807,820] [2021-12-27 21:26:31,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:26:31,312 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:26:31,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31 WrapperNode [2021-12-27 21:26:31,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:26:31,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:26:31,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:26:31,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:26:31,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,374 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2021-12-27 21:26:31,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:26:31,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:26:31,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:26:31,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:26:31,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:26:31,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:26:31,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:26:31,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:26:31,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (1/1) ... [2021-12-27 21:26:31,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:26:31,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:26:31,432 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) [2021-12-27 21:26:31,438 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 [2021-12-27 21:26:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:26:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:26:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 21:26:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 21:26:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:26:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:26:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 21:26:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 21:26:31,514 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:26:31,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:26:31,616 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:26:31,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:26:31,620 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-27 21:26:31,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:26:31 BoogieIcfgContainer [2021-12-27 21:26:31,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:26:31,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:26:31,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:26:31,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:26:31,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:26:31" (1/3) ... [2021-12-27 21:26:31,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eadfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:26:31, skipping insertion in model container [2021-12-27 21:26:31,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:26:31" (2/3) ... [2021-12-27 21:26:31,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eadfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:26:31, skipping insertion in model container [2021-12-27 21:26:31,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:26:31" (3/3) ... [2021-12-27 21:26:31,627 INFO L111 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2021-12-27 21:26:31,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:26:31,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:26:31,659 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:26:31,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 21:26:31,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:26:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-27 21:26:31,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:26:31,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:26:31,676 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:26:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:26:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash 542545282, now seen corresponding path program 1 times [2021-12-27 21:26:31,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:26:31,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355075726] [2021-12-27 21:26:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:26:31,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:26:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:26:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:26:31,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:26:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355075726] [2021-12-27 21:26:31,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355075726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:26:31,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:26:31,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:26:31,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575590744] [2021-12-27 21:26:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:26:31,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:26:31,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:26:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:26:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:26:31,851 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:26:31,915 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2021-12-27 21:26:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:26:31,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-27 21:26:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:26:31,922 INFO L225 Difference]: With dead ends: 51 [2021-12-27 21:26:31,922 INFO L226 Difference]: Without dead ends: 30 [2021-12-27 21:26:31,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:26:31,926 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:26:31,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:26:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-27 21:26:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2021-12-27 21:26:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-12-27 21:26:31,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2021-12-27 21:26:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:26:31,947 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-27 21:26:31,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-12-27 21:26:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-27 21:26:31,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:26:31,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:26:31,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:26:31,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:26:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:26:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2036151027, now seen corresponding path program 1 times [2021-12-27 21:26:31,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:26:31,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994703628] [2021-12-27 21:26:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:26:31,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:26:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:26:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-27 21:26:32,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:26:32,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994703628] [2021-12-27 21:26:32,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994703628] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:26:32,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349149319] [2021-12-27 21:26:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:26:32,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:26:32,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:26:32,008 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) [2021-12-27 21:26:32,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 21:26:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:26:32,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 21:26:32,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:26:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-27 21:26:32,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:26:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-27 21:26:32,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349149319] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:26:32,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:26:32,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-27 21:26:32,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276537842] [2021-12-27 21:26:32,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:26:32,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-27 21:26:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:26:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-27 21:26:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:26:32,233 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:32,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:26:32,311 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2021-12-27 21:26:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 21:26:32,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-27 21:26:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:26:32,314 INFO L225 Difference]: With dead ends: 73 [2021-12-27 21:26:32,316 INFO L226 Difference]: Without dead ends: 59 [2021-12-27 21:26:32,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:26:32,319 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 59 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:26:32,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 38 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:26:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-27 21:26:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2021-12-27 21:26:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-12-27 21:26:32,332 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 16 [2021-12-27 21:26:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:26:32,333 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-12-27 21:26:32,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-12-27 21:26:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-27 21:26:32,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:26:32,335 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:26:32,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-27 21:26:32,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:26:32,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:26:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:26:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1366955217, now seen corresponding path program 2 times [2021-12-27 21:26:32,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:26:32,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657170210] [2021-12-27 21:26:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:26:32,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:26:32,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:26:32,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278099416] [2021-12-27 21:26:32,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-27 21:26:32,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:26:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:26:32,596 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) [2021-12-27 21:26:32,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 21:26:32,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-27 21:26:32,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:26:32,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-27 21:26:32,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:26:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-27 21:26:32,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:26:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-27 21:26:32,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:26:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657170210] [2021-12-27 21:26:32,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:26:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278099416] [2021-12-27 21:26:32,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278099416] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:26:32,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:26:32,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-27 21:26:32,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867938571] [2021-12-27 21:26:32,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:26:32,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-27 21:26:32,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:26:32,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-27 21:26:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-27 21:26:32,840 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:26:32,985 INFO L93 Difference]: Finished difference Result 160 states and 200 transitions. [2021-12-27 21:26:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-27 21:26:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 31 [2021-12-27 21:26:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:26:32,987 INFO L225 Difference]: With dead ends: 160 [2021-12-27 21:26:32,987 INFO L226 Difference]: Without dead ends: 137 [2021-12-27 21:26:32,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-27 21:26:32,988 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 268 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:26:32,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 78 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:26:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-27 21:26:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 64. [2021-12-27 21:26:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-12-27 21:26:32,995 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 31 [2021-12-27 21:26:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:26:32,995 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-12-27 21:26:32,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:26:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-12-27 21:26:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-27 21:26:32,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:26:32,997 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:26:33,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-27 21:26:33,213 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,SelfDestructingSolverStorable2 [2021-12-27 21:26:33,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:26:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:26:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 67273059, now seen corresponding path program 3 times [2021-12-27 21:26:33,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:26:33,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972049818] [2021-12-27 21:26:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:26:33,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:26:33,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:26:33,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358979698] [2021-12-27 21:26:33,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-27 21:26:33,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:26:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:26:33,259 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) [2021-12-27 21:26:33,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 21:27:41,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-27 21:27:41,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:27:41,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-27 21:27:41,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:27:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-27 21:27:41,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:27:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-27 21:27:41,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:27:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972049818] [2021-12-27 21:27:41,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:27:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358979698] [2021-12-27 21:27:41,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358979698] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:27:41,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:27:41,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-12-27 21:27:41,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939296643] [2021-12-27 21:27:41,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:27:41,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-27 21:27:41,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:27:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-27 21:27:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-27 21:27:41,526 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:27:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:27:41,780 INFO L93 Difference]: Finished difference Result 334 states and 416 transitions. [2021-12-27 21:27:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-27 21:27:41,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 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 61 [2021-12-27 21:27:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:27:41,786 INFO L225 Difference]: With dead ends: 334 [2021-12-27 21:27:41,786 INFO L226 Difference]: Without dead ends: 293 [2021-12-27 21:27:41,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-27 21:27:41,789 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 574 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-27 21:27:41,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 164 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-27 21:27:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-27 21:27:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 124. [2021-12-27 21:27:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.2113821138211383) internal successors, (149), 123 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:27:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2021-12-27 21:27:41,813 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 61 [2021-12-27 21:27:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:27:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2021-12-27 21:27:41,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:27:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2021-12-27 21:27:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-27 21:27:41,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:27:41,820 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:27:41,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-27 21:27:42,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:27:42,021 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:27:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:27:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1367348683, now seen corresponding path program 4 times [2021-12-27 21:27:42,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:27:42,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349683857] [2021-12-27 21:27:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:27:42,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:27:42,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:27:42,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100891734] [2021-12-27 21:27:42,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-27 21:27:42,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:27:42,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:27:42,081 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) [2021-12-27 21:27:42,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-27 21:27:42,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-27 21:27:42,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:27:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-27 21:27:42,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:27:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-12-27 21:27:42,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:27:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-12-27 21:27:43,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:27:43,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349683857] [2021-12-27 21:27:43,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:27:43,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100891734] [2021-12-27 21:27:43,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100891734] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:27:43,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:27:43,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-12-27 21:27:43,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490997196] [2021-12-27 21:27:43,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:27:43,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-27 21:27:43,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:27:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-27 21:27:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-27 21:27:43,310 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 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) [2021-12-27 21:27:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:27:43,948 INFO L93 Difference]: Finished difference Result 682 states and 848 transitions. [2021-12-27 21:27:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-27 21:27:43,949 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 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 121 [2021-12-27 21:27:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:27:43,951 INFO L225 Difference]: With dead ends: 682 [2021-12-27 21:27:43,951 INFO L226 Difference]: Without dead ends: 605 [2021-12-27 21:27:43,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-27 21:27:43,953 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1795 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 21:27:43,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 331 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 21:27:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-12-27 21:27:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 244. [2021-12-27 21:27:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.205761316872428) internal successors, (293), 243 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:27:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 293 transitions. [2021-12-27 21:27:43,962 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 293 transitions. Word has length 121 [2021-12-27 21:27:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:27:43,963 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 293 transitions. [2021-12-27 21:27:43,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 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) [2021-12-27 21:27:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 293 transitions. [2021-12-27 21:27:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-27 21:27:43,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:27:43,965 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:27:43,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-27 21:27:44,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:27:44,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:27:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:27:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1689247387, now seen corresponding path program 5 times [2021-12-27 21:27:44,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:27:44,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813554982] [2021-12-27 21:27:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:27:44,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:27:44,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:27:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669738459] [2021-12-27 21:27:44,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-27 21:27:44,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:27:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:27:44,325 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) [2021-12-27 21:27:44,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process