./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array24_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-patterns/array24_pattern.c -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 b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 00:41:40,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 00:41:40,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 00:41:40,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 00:41:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 00:41:40,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 00:41:40,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 00:41:40,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 00:41:40,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 00:41:40,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 00:41:40,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 00:41:40,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 00:41:40,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 00:41:40,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 00:41:40,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 00:41:40,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 00:41:40,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 00:41:40,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 00:41:40,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 00:41:40,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 00:41:40,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 00:41:40,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 00:41:40,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 00:41:40,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 00:41:40,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 00:41:40,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 00:41:40,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 00:41:40,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 00:41:40,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 00:41:40,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 00:41:40,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 00:41:40,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 00:41:40,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 00:41:40,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 00:41:40,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 00:41:40,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 00:41:40,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 00:41:40,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 00:41:40,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 00:41:40,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 00:41:40,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 00:41:40,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 00:41:40,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 00:41:40,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 00:41:40,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 00:41:40,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 00:41:40,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 00:41:40,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 00:41:40,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 00:41:40,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 00:41:40,539 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 00:41:40,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 00:41:40,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 00:41:40,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 00:41:40,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 00:41:40,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 00:41:40,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 00:41:40,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 00:41:40,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 00:41:40,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 00:41:40,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 00:41:40,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 00:41:40,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 00:41:40,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 00:41:40,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 00:41:40,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 00:41:40,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 00:41:40,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 00:41:40,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 00:41:40,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 00:41:40,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 00:41:40,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 00:41:40,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 00:41:40,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 00:41:40,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 00:41:40,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 00:41:40,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2021-12-17 00:41:40,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 00:41:40,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 00:41:40,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 00:41:40,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 00:41:40,796 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 00:41:40,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array24_pattern.c [2021-12-17 00:41:40,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e427486c9/034976c66889446aa849c8307a93f7e5/FLAG265156b58 [2021-12-17 00:41:41,224 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 00:41:41,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c [2021-12-17 00:41:41,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e427486c9/034976c66889446aa849c8307a93f7e5/FLAG265156b58 [2021-12-17 00:41:41,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e427486c9/034976c66889446aa849c8307a93f7e5 [2021-12-17 00:41:41,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 00:41:41,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 00:41:41,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 00:41:41,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 00:41:41,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 00:41:41,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f2ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41, skipping insertion in model container [2021-12-17 00:41:41,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 00:41:41,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 00:41:41,820 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-patterns/array24_pattern.c[1359,1372] [2021-12-17 00:41:41,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 00:41:41,842 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 00:41:41,851 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-patterns/array24_pattern.c[1359,1372] [2021-12-17 00:41:41,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 00:41:41,872 INFO L208 MainTranslator]: Completed translation [2021-12-17 00:41:41,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41 WrapperNode [2021-12-17 00:41:41,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 00:41:41,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 00:41:41,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 00:41:41,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 00:41:41,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,901 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2021-12-17 00:41:41,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 00:41:41,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 00:41:41,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 00:41:41,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 00:41:41,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 00:41:41,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 00:41:41,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 00:41:41,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 00:41:41,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (1/1) ... [2021-12-17 00:41:41,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 00:41:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:41,960 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) [2021-12-17 00:41:41,962 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 [2021-12-17 00:41:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-12-17 00:41:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-12-17 00:41:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 00:41:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 00:41:41,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 00:41:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 00:41:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 00:41:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 00:41:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 00:41:41,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 00:41:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 00:41:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 00:41:42,038 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 00:41:42,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 00:41:42,166 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 00:41:42,171 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 00:41:42,171 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-17 00:41:42,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:41:42 BoogieIcfgContainer [2021-12-17 00:41:42,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 00:41:42,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 00:41:42,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 00:41:42,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 00:41:42,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 12:41:41" (1/3) ... [2021-12-17 00:41:42,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb62ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:41:42, skipping insertion in model container [2021-12-17 00:41:42,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:41:41" (2/3) ... [2021-12-17 00:41:42,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb62ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:41:42, skipping insertion in model container [2021-12-17 00:41:42,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:41:42" (3/3) ... [2021-12-17 00:41:42,193 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2021-12-17 00:41:42,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 00:41:42,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 00:41:42,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 00:41:42,273 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 [2021-12-17 00:41:42,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 00:41:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:41:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 00:41:42,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:42,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:42,292 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2021-12-17 00:41:42,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:42,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398009129] [2021-12-17 00:41:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:42,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:41:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 00:41:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:41:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:41:42,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:42,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398009129] [2021-12-17 00:41:42,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398009129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:41:42,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:41:42,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 00:41:42,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514375468] [2021-12-17 00:41:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:41:42,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 00:41:42,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 00:41:42,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 00:41:42,521 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 00:41:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:42,552 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2021-12-17 00:41:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 00:41:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-17 00:41:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:42,559 INFO L225 Difference]: With dead ends: 77 [2021-12-17 00:41:42,560 INFO L226 Difference]: Without dead ends: 36 [2021-12-17 00:41:42,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 00:41:42,567 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:42,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:41:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-17 00:41:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-17 00:41:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:41:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-12-17 00:41:42,615 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2021-12-17 00:41:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:42,615 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-12-17 00:41:42,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 00:41:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-12-17 00:41:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-17 00:41:42,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:42,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:42,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 00:41:42,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2021-12-17 00:41:42,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:42,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005029391] [2021-12-17 00:41:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:42,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:42,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:42,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522937146] [2021-12-17 00:41:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:42,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:42,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:42,643 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) [2021-12-17 00:41:42,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 00:41:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:41:42,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 00:41:42,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:41:42,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:41:42,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:42,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005029391] [2021-12-17 00:41:42,833 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:42,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522937146] [2021-12-17 00:41:42,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522937146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:41:42,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:41:42,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 00:41:42,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533433472] [2021-12-17 00:41:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:41:42,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 00:41:42,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 00:41:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 00:41:42,836 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:41:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:42,941 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2021-12-17 00:41:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 00:41:42,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-12-17 00:41:42,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:42,942 INFO L225 Difference]: With dead ends: 76 [2021-12-17 00:41:42,943 INFO L226 Difference]: Without dead ends: 48 [2021-12-17 00:41:42,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-17 00:41:42,945 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:42,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:41:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-17 00:41:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-12-17 00:41:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:41:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2021-12-17 00:41:42,954 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2021-12-17 00:41:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:42,954 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2021-12-17 00:41:42,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:41:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2021-12-17 00:41:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-17 00:41:42,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:42,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:42,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 00:41:43,171 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 [2021-12-17 00:41:43,172 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2021-12-17 00:41:43,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:43,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023509466] [2021-12-17 00:41:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:43,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:43,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:43,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55931800] [2021-12-17 00:41:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:43,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:43,202 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) [2021-12-17 00:41:43,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 00:41:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:41:43,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 00:41:43,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 00:41:43,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:41:43,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:43,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023509466] [2021-12-17 00:41:43,406 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:43,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55931800] [2021-12-17 00:41:43,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55931800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:41:43,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:41:43,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 00:41:43,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311311220] [2021-12-17 00:41:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:41:43,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 00:41:43,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 00:41:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 00:41:43,412 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:41:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:43,473 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-12-17 00:41:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 00:41:43,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2021-12-17 00:41:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:43,476 INFO L225 Difference]: With dead ends: 79 [2021-12-17 00:41:43,476 INFO L226 Difference]: Without dead ends: 46 [2021-12-17 00:41:43,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:41:43,481 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:43,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:41:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-17 00:41:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-12-17 00:41:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:41:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-12-17 00:41:43,495 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2021-12-17 00:41:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:43,496 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-12-17 00:41:43,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:41:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-12-17 00:41:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-17 00:41:43,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:43,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:43,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 00:41:43,707 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 [2021-12-17 00:41:43,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:43,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2021-12-17 00:41:43,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:43,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615483179] [2021-12-17 00:41:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:43,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:43,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:43,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700673104] [2021-12-17 00:41:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:43,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:43,730 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) [2021-12-17 00:41:43,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 00:41:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:41:43,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 00:41:43,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 00:41:43,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:41:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 00:41:44,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615483179] [2021-12-17 00:41:44,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700673104] [2021-12-17 00:41:44,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700673104] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:41:44,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:41:44,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-17 00:41:44,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828083661] [2021-12-17 00:41:44,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:41:44,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 00:41:44,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 00:41:44,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-12-17 00:41:44,118 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-17 00:41:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:44,312 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2021-12-17 00:41:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 00:41:44,313 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2021-12-17 00:41:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:44,330 INFO L225 Difference]: With dead ends: 85 [2021-12-17 00:41:44,330 INFO L226 Difference]: Without dead ends: 50 [2021-12-17 00:41:44,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:41:44,332 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:44,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 151 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:41:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-17 00:41:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-12-17 00:41:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:41:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-12-17 00:41:44,338 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2021-12-17 00:41:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:44,339 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-12-17 00:41:44,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-17 00:41:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-12-17 00:41:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-17 00:41:44,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:44,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2021-12-17 00:41:44,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 00:41:44,559 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 [2021-12-17 00:41:44,559 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2021-12-17 00:41:44,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:44,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354438968] [2021-12-17 00:41:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:44,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:44,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:44,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795092787] [2021-12-17 00:41:44,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:41:44,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:44,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:44,573 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) [2021-12-17 00:41:44,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 00:41:44,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:41:44,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:41:44,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 00:41:44,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-17 00:41:44,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:41:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-17 00:41:44,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:44,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354438968] [2021-12-17 00:41:44,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:44,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795092787] [2021-12-17 00:41:44,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795092787] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:41:44,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:41:44,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-17 00:41:44,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723833313] [2021-12-17 00:41:44,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:41:44,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 00:41:44,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:44,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 00:41:44,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-17 00:41:44,896 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:41:45,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:45,061 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2021-12-17 00:41:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 00:41:45,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2021-12-17 00:41:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:45,062 INFO L225 Difference]: With dead ends: 106 [2021-12-17 00:41:45,063 INFO L226 Difference]: Without dead ends: 74 [2021-12-17 00:41:45,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-17 00:41:45,064 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:45,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:41:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-17 00:41:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2021-12-17 00:41:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:41:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2021-12-17 00:41:45,071 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2021-12-17 00:41:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:45,071 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2021-12-17 00:41:45,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:41:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2021-12-17 00:41:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 00:41:45,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:45,072 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-17 00:41:45,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 00:41:45,275 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 [2021-12-17 00:41:45,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2021-12-17 00:41:45,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:45,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442435044] [2021-12-17 00:41:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:45,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:45,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:45,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151258837] [2021-12-17 00:41:45,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 00:41:45,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:45,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:45,296 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) [2021-12-17 00:41:45,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 00:41:46,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-17 00:41:46,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:41:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-17 00:41:46,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:47,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 60 treesize of output 55 [2021-12-17 00:41:47,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:47,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 18 [2021-12-17 00:41:47,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 71 treesize of output 64 [2021-12-17 00:41:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 00:41:47,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 85 [2021-12-17 00:41:47,286 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-12-17 00:41:47,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 76 treesize of output 67 [2021-12-17 00:41:47,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,506 INFO L354 Elim1Store]: treesize reduction 164, result has 13.2 percent of original size [2021-12-17 00:41:47,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 88 [2021-12-17 00:41:47,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,524 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-12-17 00:41:47,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 14 [2021-12-17 00:41:47,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 95 treesize of output 84 [2021-12-17 00:41:47,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,728 INFO L354 Elim1Store]: treesize reduction 206, result has 10.8 percent of original size [2021-12-17 00:41:47,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 125 [2021-12-17 00:41:47,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:47,776 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-12-17 00:41:47,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 31 [2021-12-17 00:41:50,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 143 treesize of output 126 [2021-12-17 00:41:50,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:50,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,107 INFO L354 Elim1Store]: treesize reduction 495, result has 10.5 percent of original size [2021-12-17 00:41:51,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 125 treesize of output 160 [2021-12-17 00:41:51,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:51,183 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-12-17 00:41:51,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 42 [2021-12-17 00:41:52,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:52,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:41:52,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 133 treesize of output 197 [2021-12-17 00:41:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:41:53,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:42:00,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442435044] [2021-12-17 00:42:00,423 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151258837] [2021-12-17 00:42:00,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151258837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:42:00,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:42:00,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-12-17 00:42:00,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157466919] [2021-12-17 00:42:00,423 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:42:00,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-17 00:42:00,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-17 00:42:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2214, Unknown=1, NotChecked=0, Total=2652 [2021-12-17 00:42:00,425 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:42:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:03,923 INFO L93 Difference]: Finished difference Result 112 states and 135 transitions. [2021-12-17 00:42:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-17 00:42:03,923 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2021-12-17 00:42:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:03,926 INFO L225 Difference]: With dead ends: 112 [2021-12-17 00:42:03,926 INFO L226 Difference]: Without dead ends: 108 [2021-12-17 00:42:03,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=556, Invalid=2982, Unknown=2, NotChecked=0, Total=3540 [2021-12-17 00:42:03,928 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:03,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 468 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 140 Invalid, 0 Unknown, 208 Unchecked, 0.1s Time] [2021-12-17 00:42:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-17 00:42:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2021-12-17 00:42:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.211111111111111) internal successors, (109), 90 states have internal predecessors, (109), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-17 00:42:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-12-17 00:42:03,940 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 63 [2021-12-17 00:42:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:03,941 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-12-17 00:42:03,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:42:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2021-12-17 00:42:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 00:42:03,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:03,942 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:03,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:04,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:04,149 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:04,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash -506553876, now seen corresponding path program 1 times [2021-12-17 00:42:04,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:04,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701207796] [2021-12-17 00:42:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:04,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:04,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:04,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538913436] [2021-12-17 00:42:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:04,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:04,161 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) [2021-12-17 00:42:04,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 00:42:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:42:04,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 00:42:04,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-17 00:42:04,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:42:04,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:04,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701207796] [2021-12-17 00:42:04,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:04,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538913436] [2021-12-17 00:42:04,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538913436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:42:04,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:42:04,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 00:42:04,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607934163] [2021-12-17 00:42:04,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:42:04,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 00:42:04,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 00:42:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 00:42:04,309 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:42:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:04,323 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2021-12-17 00:42:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 00:42:04,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2021-12-17 00:42:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:04,324 INFO L225 Difference]: With dead ends: 145 [2021-12-17 00:42:04,325 INFO L226 Difference]: Without dead ends: 106 [2021-12-17 00:42:04,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 00:42:04,326 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:04,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:42:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-17 00:42:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-12-17 00:42:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-17 00:42:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2021-12-17 00:42:04,337 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 63 [2021-12-17 00:42:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:04,337 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2021-12-17 00:42:04,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:42:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2021-12-17 00:42:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 00:42:04,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:04,339 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:04,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:04,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:04,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 236205423, now seen corresponding path program 1 times [2021-12-17 00:42:04,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:04,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975603052] [2021-12-17 00:42:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:04,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:04,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:04,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005401356] [2021-12-17 00:42:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:04,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:04,557 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) [2021-12-17 00:42:04,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 00:42:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:42:04,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 00:42:04,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-17 00:42:04,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:42:04,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:04,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975603052] [2021-12-17 00:42:04,723 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005401356] [2021-12-17 00:42:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005401356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:42:04,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:42:04,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 00:42:04,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417641112] [2021-12-17 00:42:04,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:42:04,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 00:42:04,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 00:42:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:42:04,726 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:42:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:04,757 INFO L93 Difference]: Finished difference Result 155 states and 189 transitions. [2021-12-17 00:42:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 00:42:04,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2021-12-17 00:42:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:04,761 INFO L225 Difference]: With dead ends: 155 [2021-12-17 00:42:04,761 INFO L226 Difference]: Without dead ends: 115 [2021-12-17 00:42:04,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 00:42:04,764 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 5 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:04,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:42:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-17 00:42:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2021-12-17 00:42:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 94 states have internal predecessors, (112), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-17 00:42:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-12-17 00:42:04,791 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 63 [2021-12-17 00:42:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:04,791 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-12-17 00:42:04,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:42:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-12-17 00:42:04,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 00:42:04,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:04,795 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:04,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:04,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:04,999 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1172698608, now seen corresponding path program 4 times [2021-12-17 00:42:05,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:05,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334457392] [2021-12-17 00:42:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:05,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:05,018 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:05,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419742884] [2021-12-17 00:42:05,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 00:42:05,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:05,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:05,019 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) [2021-12-17 00:42:05,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 00:42:05,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 00:42:05,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:42:05,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:42:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 00:42:05,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:42:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 00:42:05,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334457392] [2021-12-17 00:42:05,347 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419742884] [2021-12-17 00:42:05,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419742884] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:42:05,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:42:05,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 00:42:05,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550105776] [2021-12-17 00:42:05,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:42:05,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 00:42:05,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:05,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 00:42:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 00:42:05,349 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:42:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:05,563 INFO L93 Difference]: Finished difference Result 282 states and 348 transitions. [2021-12-17 00:42:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 00:42:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-17 00:42:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:05,565 INFO L225 Difference]: With dead ends: 282 [2021-12-17 00:42:05,565 INFO L226 Difference]: Without dead ends: 196 [2021-12-17 00:42:05,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-17 00:42:05,567 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 133 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:05,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 204 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:42:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-17 00:42:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2021-12-17 00:42:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.1791044776119404) internal successors, (158), 134 states have internal predecessors, (158), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-17 00:42:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2021-12-17 00:42:05,580 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 65 [2021-12-17 00:42:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:05,581 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2021-12-17 00:42:05,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:42:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2021-12-17 00:42:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 00:42:05,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:05,582 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:05,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:05,795 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,SelfDestructingSolverStorable8 [2021-12-17 00:42:05,796 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:05,796 INFO L85 PathProgramCache]: Analyzing trace with hash 785313200, now seen corresponding path program 5 times [2021-12-17 00:42:05,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:05,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661961919] [2021-12-17 00:42:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:05,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:05,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300287295] [2021-12-17 00:42:05,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 00:42:05,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:05,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:05,805 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) [2021-12-17 00:42:05,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 00:42:05,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-17 00:42:05,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:42:05,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:42:05,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 00:42:05,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:42:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 00:42:06,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661961919] [2021-12-17 00:42:06,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300287295] [2021-12-17 00:42:06,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300287295] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:42:06,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:42:06,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 00:42:06,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071083723] [2021-12-17 00:42:06,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:42:06,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 00:42:06,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 00:42:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 00:42:06,092 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:42:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:06,324 INFO L93 Difference]: Finished difference Result 214 states and 252 transitions. [2021-12-17 00:42:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 00:42:06,325 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-17 00:42:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:06,326 INFO L225 Difference]: With dead ends: 214 [2021-12-17 00:42:06,326 INFO L226 Difference]: Without dead ends: 163 [2021-12-17 00:42:06,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:42:06,327 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 103 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:06,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 282 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:42:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-17 00:42:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 156. [2021-12-17 00:42:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.1567164179104477) internal successors, (155), 134 states have internal predecessors, (155), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-17 00:42:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2021-12-17 00:42:06,339 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 65 [2021-12-17 00:42:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:06,339 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2021-12-17 00:42:06,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:42:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2021-12-17 00:42:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 00:42:06,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:06,340 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:06,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:06,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 00:42:06,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:06,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash -834557719, now seen corresponding path program 1 times [2021-12-17 00:42:06,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:06,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116992364] [2021-12-17 00:42:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:06,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:06,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050261687] [2021-12-17 00:42:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:06,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:06,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:06,560 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) [2021-12-17 00:42:06,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 00:42:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:42:06,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 00:42:06,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-17 00:42:06,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:42:06,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:06,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116992364] [2021-12-17 00:42:06,738 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:06,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050261687] [2021-12-17 00:42:06,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050261687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:42:06,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:42:06,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 00:42:06,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049241924] [2021-12-17 00:42:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:42:06,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 00:42:06,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 00:42:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:42:06,740 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 00:42:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:06,765 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2021-12-17 00:42:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 00:42:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2021-12-17 00:42:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:06,767 INFO L225 Difference]: With dead ends: 248 [2021-12-17 00:42:06,767 INFO L226 Difference]: Without dead ends: 160 [2021-12-17 00:42:06,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 00:42:06,768 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:06,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 164 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:42:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-17 00:42:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-12-17 00:42:06,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 134 states have internal predecessors, (152), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-17 00:42:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2021-12-17 00:42:06,780 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 69 [2021-12-17 00:42:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:06,780 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2021-12-17 00:42:06,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 00:42:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2021-12-17 00:42:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 00:42:06,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:06,781 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:06,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-17 00:42:06,995 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,SelfDestructingSolverStorable10 [2021-12-17 00:42:06,995 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1276732650, now seen corresponding path program 1 times [2021-12-17 00:42:06,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:06,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286666641] [2021-12-17 00:42:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:06,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:07,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:07,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986702513] [2021-12-17 00:42:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:07,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:07,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:07,004 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) [2021-12-17 00:42:07,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 00:42:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:42:07,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-17 00:42:07,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 00:42:07,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:42:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 00:42:07,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:07,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286666641] [2021-12-17 00:42:07,551 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:07,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986702513] [2021-12-17 00:42:07,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986702513] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:42:07,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:42:07,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2021-12-17 00:42:07,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182904024] [2021-12-17 00:42:07,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:42:07,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-17 00:42:07,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-17 00:42:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-17 00:42:07,552 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-17 00:42:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:07,875 INFO L93 Difference]: Finished difference Result 215 states and 242 transitions. [2021-12-17 00:42:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 00:42:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 69 [2021-12-17 00:42:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:07,878 INFO L225 Difference]: With dead ends: 215 [2021-12-17 00:42:07,878 INFO L226 Difference]: Without dead ends: 169 [2021-12-17 00:42:07,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2021-12-17 00:42:07,879 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:07,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 224 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:42:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-17 00:42:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2021-12-17 00:42:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.1094890510948905) internal successors, (152), 139 states have internal predecessors, (152), 13 states have call successors, (13), 9 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2021-12-17 00:42:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 180 transitions. [2021-12-17 00:42:07,890 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 180 transitions. Word has length 69 [2021-12-17 00:42:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:07,890 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 180 transitions. [2021-12-17 00:42:07,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-17 00:42:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 180 transitions. [2021-12-17 00:42:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 00:42:07,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:07,892 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-17 00:42:07,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:08,115 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,SelfDestructingSolverStorable11 [2021-12-17 00:42:08,115 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035513, now seen corresponding path program 6 times [2021-12-17 00:42:08,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475296490] [2021-12-17 00:42:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:08,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:08,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:08,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289749869] [2021-12-17 00:42:08,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 00:42:08,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:08,125 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) [2021-12-17 00:42:08,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 00:42:08,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-17 00:42:08,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:42:08,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:42:08,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-17 00:42:08,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:42:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-17 00:42:08,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:08,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475296490] [2021-12-17 00:42:08,496 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:08,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289749869] [2021-12-17 00:42:08,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289749869] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:42:08,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:42:08,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-17 00:42:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338832815] [2021-12-17 00:42:08,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:42:08,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 00:42:08,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 00:42:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-17 00:42:08,498 INFO L87 Difference]: Start difference. First operand 161 states and 180 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:42:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:08,693 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2021-12-17 00:42:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 00:42:08,694 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2021-12-17 00:42:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:08,694 INFO L225 Difference]: With dead ends: 175 [2021-12-17 00:42:08,694 INFO L226 Difference]: Without dead ends: 77 [2021-12-17 00:42:08,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:42:08,695 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 102 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:08,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 148 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:42:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-17 00:42:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-12-17 00:42:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-17 00:42:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-12-17 00:42:08,700 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 70 [2021-12-17 00:42:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:08,700 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-12-17 00:42:08,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:42:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-12-17 00:42:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 00:42:08,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:08,701 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-17 00:42:08,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:08,901 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,SelfDestructingSolverStorable12 [2021-12-17 00:42:08,902 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:08,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1478551406, now seen corresponding path program 7 times [2021-12-17 00:42:08,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:08,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460733135] [2021-12-17 00:42:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:08,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:08,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:08,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601086140] [2021-12-17 00:42:08,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-17 00:42:08,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:08,911 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) [2021-12-17 00:42:08,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-17 00:42:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:42:08,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:42:08,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-17 00:42:09,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:42:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-17 00:42:09,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:42:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460733135] [2021-12-17 00:42:09,312 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:42:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601086140] [2021-12-17 00:42:09,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601086140] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:42:09,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:42:09,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-17 00:42:09,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394825927] [2021-12-17 00:42:09,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:42:09,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:42:09,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:42:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:42:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-17 00:42:09,314 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:42:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:42:09,548 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2021-12-17 00:42:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 00:42:09,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2021-12-17 00:42:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:42:09,550 INFO L225 Difference]: With dead ends: 157 [2021-12-17 00:42:09,550 INFO L226 Difference]: Without dead ends: 109 [2021-12-17 00:42:09,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-17 00:42:09,551 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 51 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:42:09,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 223 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:42:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-17 00:42:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2021-12-17 00:42:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 83 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-17 00:42:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-12-17 00:42:09,557 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 71 [2021-12-17 00:42:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:42:09,558 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-12-17 00:42:09,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:42:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-12-17 00:42:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 00:42:09,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:42:09,559 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:42:09,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-17 00:42:09,763 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,SelfDestructingSolverStorable13 [2021-12-17 00:42:09,763 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:42:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:42:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 599706749, now seen corresponding path program 8 times [2021-12-17 00:42:09,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:42:09,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108557120] [2021-12-17 00:42:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:42:09,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:42:09,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:42:09,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578061138] [2021-12-17 00:42:09,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:42:09,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:42:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:42:09,776 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) [2021-12-17 00:42:09,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-17 00:42:11,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:42:11,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:42:11,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-17 00:42:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:42:11,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 60 treesize of output 55 [2021-12-17 00:42:11,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 20 [2021-12-17 00:42:11,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 18 [2021-12-17 00:42:11,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 79 treesize of output 72 [2021-12-17 00:42:11,241 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-12-17 00:42:11,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 95 [2021-12-17 00:42:11,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 21 [2021-12-17 00:42:11,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 26 [2021-12-17 00:42:11,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 98 treesize of output 89 [2021-12-17 00:42:11,395 INFO L354 Elim1Store]: treesize reduction 328, result has 17.4 percent of original size [2021-12-17 00:42:11,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 132 [2021-12-17 00:42:11,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 38 [2021-12-17 00:42:11,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-17 00:42:11,696 INFO L354 Elim1Store]: treesize reduction 284, result has 12.1 percent of original size [2021-12-17 00:42:11,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 105 [2021-12-17 00:42:11,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-12-17 00:42:11,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 100 treesize of output 87 [2021-12-17 00:42:11,927 INFO L354 Elim1Store]: treesize reduction 460, result has 12.4 percent of original size [2021-12-17 00:42:11,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 86 treesize of output 134 [2021-12-17 00:42:11,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:11,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 37 [2021-12-17 00:42:12,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 112 treesize of output 97 [2021-12-17 00:42:12,176 INFO L354 Elim1Store]: treesize reduction 630, result has 12.9 percent of original size [2021-12-17 00:42:12,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 96 treesize of output 161 [2021-12-17 00:42:12,187 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:42:12,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 50 [2021-12-17 00:42:12,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 138 treesize of output 121 [2021-12-17 00:42:12,616 INFO L354 Elim1Store]: treesize reduction 972, result has 12.0 percent of original size [2021-12-17 00:42:12,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 120 treesize of output 208 [2021-12-17 00:42:12,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:12,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 51 [2021-12-17 00:42:12,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 157 treesize of output 138 [2021-12-17 00:42:13,040 INFO L354 Elim1Store]: treesize reduction 1276, result has 11.6 percent of original size [2021-12-17 00:42:13,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 137 treesize of output 245 [2021-12-17 00:42:13,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:42:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 64 [2021-12-17 00:42:13,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 165 treesize of output 144 [2021-12-17 00:42:13,545 INFO L354 Elim1Store]: treesize reduction 1457, result has 11.4 percent of original size [2021-12-17 00:42:13,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 143 treesize of output 264 [2021-12-17 00:42:13,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:42:13,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:42:13,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 83 [2021-12-17 00:43:39,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 197 treesize of output 170 [2021-12-17 00:43:39,990 INFO L354 Elim1Store]: treesize reduction 1688, result has 18.5 percent of original size [2021-12-17 00:43:39,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 64 case distinctions, treesize of input 169 treesize of output 467 [2021-12-17 00:43:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:43:42,989 INFO L354 Elim1Store]: treesize reduction 662, result has 0.2 percent of original size [2021-12-17 00:43:42,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 213 treesize of output 105 [2021-12-17 00:43:46,144 INFO L354 Elim1Store]: treesize reduction 1434, result has 10.2 percent of original size [2021-12-17 00:43:46,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 211 treesize of output 215 [2021-12-17 00:43:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:43:46,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:44:43,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:44:43,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108557120] [2021-12-17 00:44:43,219 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:44:43,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578061138] [2021-12-17 00:44:43,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578061138] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:44:43,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:44:43,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-12-17 00:44:43,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334398606] [2021-12-17 00:44:43,220 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:44:43,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-17 00:44:43,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:44:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-17 00:44:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=4460, Unknown=22, NotChecked=0, Total=5256 [2021-12-17 00:44:43,223 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 48 states, 48 states have (on average 1.625) internal successors, (78), 48 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:44:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:44:53,678 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2021-12-17 00:44:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-17 00:44:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.625) internal successors, (78), 48 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 89 [2021-12-17 00:44:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:44:53,680 INFO L225 Difference]: With dead ends: 243 [2021-12-17 00:44:53,680 INFO L226 Difference]: Without dead ends: 237 [2021-12-17 00:44:53,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 43 SyntacticMatches, 14 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 140.0s TimeCoverageRelationStatistics Valid=993, Invalid=5625, Unknown=24, NotChecked=0, Total=6642 [2021-12-17 00:44:53,682 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 127 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 00:44:53,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 397 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1923 Invalid, 0 Unknown, 225 Unchecked, 4.6s Time] [2021-12-17 00:44:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-17 00:44:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 168. [2021-12-17 00:44:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 153 states have internal predecessors, (174), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-17 00:44:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 193 transitions. [2021-12-17 00:44:53,695 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 193 transitions. Word has length 89 [2021-12-17 00:44:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:44:53,695 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 193 transitions. [2021-12-17 00:44:53,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.625) internal successors, (78), 48 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:44:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 193 transitions. [2021-12-17 00:44:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 00:44:53,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:44:53,697 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:44:53,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-17 00:44:53,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:44:53,919 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:44:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:44:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 952826399, now seen corresponding path program 9 times [2021-12-17 00:44:53,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:44:53,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16200376] [2021-12-17 00:44:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:44:53,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:44:53,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:44:53,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275820116] [2021-12-17 00:44:53,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 00:44:53,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:44:53,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:44:53,934 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) [2021-12-17 00:44:53,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-17 00:44:54,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-17 00:44:54,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:44:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 00:44:54,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:44:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 62 proven. 59 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-17 00:44:55,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:44:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 37 proven. 84 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-17 00:44:55,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:44:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16200376] [2021-12-17 00:44:55,191 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:44:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275820116] [2021-12-17 00:44:55,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275820116] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:44:55,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:44:55,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-17 00:44:55,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991770953] [2021-12-17 00:44:55,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:44:55,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:44:55,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:44:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:44:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-17 00:44:55,193 INFO L87 Difference]: Start difference. First operand 168 states and 193 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:44:55,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:44:55,427 INFO L93 Difference]: Finished difference Result 412 states and 484 transitions. [2021-12-17 00:44:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 00:44:55,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 91 [2021-12-17 00:44:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:44:55,429 INFO L225 Difference]: With dead ends: 412 [2021-12-17 00:44:55,429 INFO L226 Difference]: Without dead ends: 280 [2021-12-17 00:44:55,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-12-17 00:44:55,431 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 194 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:44:55,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 221 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:44:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-17 00:44:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 225. [2021-12-17 00:44:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 203 states have (on average 1.1231527093596059) internal successors, (228), 203 states have internal predecessors, (228), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-17 00:44:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2021-12-17 00:44:55,446 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 91 [2021-12-17 00:44:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:44:55,446 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2021-12-17 00:44:55,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:44:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2021-12-17 00:44:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 00:44:55,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:44:55,449 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:44:55,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-17 00:44:55,655 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,SelfDestructingSolverStorable15 [2021-12-17 00:44:55,655 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:44:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:44:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -825002241, now seen corresponding path program 10 times [2021-12-17 00:44:55,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:44:55,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325289620] [2021-12-17 00:44:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:44:55,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:44:55,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:44:55,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726921462] [2021-12-17 00:44:55,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 00:44:55,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:44:55,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:44:55,665 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) [2021-12-17 00:44:55,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-17 00:44:55,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 00:44:55,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:44:55,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 00:44:55,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:44:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 88 proven. 41 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-17 00:44:55,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:44:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 73 proven. 48 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-17 00:44:56,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:44:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325289620] [2021-12-17 00:44:56,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:44:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726921462] [2021-12-17 00:44:56,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726921462] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:44:56,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:44:56,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-17 00:44:56,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868720471] [2021-12-17 00:44:56,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:44:56,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:44:56,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:44:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:44:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-17 00:44:56,057 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:44:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:44:56,325 INFO L93 Difference]: Finished difference Result 291 states and 328 transitions. [2021-12-17 00:44:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 00:44:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2021-12-17 00:44:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:44:56,326 INFO L225 Difference]: With dead ends: 291 [2021-12-17 00:44:56,326 INFO L226 Difference]: Without dead ends: 223 [2021-12-17 00:44:56,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-12-17 00:44:56,327 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 96 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:44:56,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 304 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:44:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-17 00:44:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 214. [2021-12-17 00:44:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 192 states have (on average 1.0989583333333333) internal successors, (211), 192 states have internal predecessors, (211), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-17 00:44:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 240 transitions. [2021-12-17 00:44:56,342 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 240 transitions. Word has length 91 [2021-12-17 00:44:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:44:56,342 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 240 transitions. [2021-12-17 00:44:56,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:44:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 240 transitions. [2021-12-17 00:44:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 00:44:56,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:44:56,344 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2021-12-17 00:44:56,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-17 00:44:56,563 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,SelfDestructingSolverStorable16 [2021-12-17 00:44:56,563 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:44:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:44:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2080469951, now seen corresponding path program 2 times [2021-12-17 00:44:56,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:44:56,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238891990] [2021-12-17 00:44:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:44:56,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:44:56,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:44:56,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285076324] [2021-12-17 00:44:56,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:44:56,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:44:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:44:56,574 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) [2021-12-17 00:44:56,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-17 00:44:57,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:44:57,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:44:57,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 142 conjunts are in the unsatisfiable core [2021-12-17 00:44:57,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:44:57,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 60 treesize of output 55 [2021-12-17 00:44:57,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 20 [2021-12-17 00:44:57,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 18 [2021-12-17 00:44:57,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 79 treesize of output 72 [2021-12-17 00:44:57,275 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-12-17 00:44:57,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 95 [2021-12-17 00:44:57,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 7 [2021-12-17 00:44:57,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 7 [2021-12-17 00:44:57,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 98 treesize of output 89 [2021-12-17 00:44:57,419 INFO L354 Elim1Store]: treesize reduction 328, result has 17.4 percent of original size [2021-12-17 00:44:57,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 132 [2021-12-17 00:44:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 48 [2021-12-17 00:44:57,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-17 00:44:57,707 INFO L354 Elim1Store]: treesize reduction 284, result has 12.1 percent of original size [2021-12-17 00:44:57,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 105 [2021-12-17 00:44:57,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-12-17 00:44:57,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 104 treesize of output 91 [2021-12-17 00:44:57,959 INFO L354 Elim1Store]: treesize reduction 496, result has 12.8 percent of original size [2021-12-17 00:44:57,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 90 treesize of output 142 [2021-12-17 00:44:57,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:57,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 46 [2021-12-17 00:44:58,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 112 treesize of output 97 [2021-12-17 00:44:58,293 INFO L354 Elim1Store]: treesize reduction 630, result has 12.9 percent of original size [2021-12-17 00:44:58,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 96 treesize of output 161 [2021-12-17 00:44:58,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:44:58,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 26 [2021-12-17 00:44:58,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 126 treesize of output 109 [2021-12-17 00:44:58,844 INFO L354 Elim1Store]: treesize reduction 840, result has 11.5 percent of original size [2021-12-17 00:44:58,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 108 treesize of output 184 [2021-12-17 00:44:58,874 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:44:58,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:58,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 64 [2021-12-17 00:44:59,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 145 treesize of output 126 [2021-12-17 00:44:59,356 INFO L354 Elim1Store]: treesize reduction 1132, result has 11.2 percent of original size [2021-12-17 00:44:59,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 125 treesize of output 221 [2021-12-17 00:44:59,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:44:59,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:44:59,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 75 [2021-12-17 00:44:59,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 153 treesize of output 132 [2021-12-17 00:44:59,983 INFO L354 Elim1Store]: treesize reduction 1301, result has 11.1 percent of original size [2021-12-17 00:44:59,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 131 treesize of output 240 [2021-12-17 00:44:59,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:45:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:45:00,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 85 [2021-12-17 00:46:58,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 197 treesize of output 170 [2021-12-17 00:46:58,893 INFO L354 Elim1Store]: treesize reduction 1892, result has 8.6 percent of original size [2021-12-17 00:46:58,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 64 case distinctions, treesize of input 169 treesize of output 263 [2021-12-17 00:46:59,016 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:46:59,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:46:59,245 INFO L354 Elim1Store]: treesize reduction 1120, result has 0.1 percent of original size [2021-12-17 00:46:59,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 461 treesize of output 305 [2021-12-17 00:47:03,729 INFO L354 Elim1Store]: treesize reduction 819, result has 0.1 percent of original size [2021-12-17 00:47:03,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 149 treesize of output 47 [2021-12-17 00:47:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 8 proven. 224 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 00:47:03,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:50:33,281 WARN L227 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:51:13,294 WARN L227 SmtUtils]: Spent 9.67s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:51:49,002 WARN L227 SmtUtils]: Spent 8.89s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:52:20,614 WARN L227 SmtUtils]: Spent 9.23s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:52:21,213 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 51 [2021-12-17 00:52:23,109 INFO L244 Elim1Store]: Index analysis took 747 ms [2021-12-17 00:52:25,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:52:25,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 58 [2021-12-17 00:52:26,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 4 [2021-12-17 00:52:29,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 4 [2021-12-17 00:55:04,471 WARN L227 SmtUtils]: Spent 2.48m on a formula simplification. DAG size of input: 598 DAG size of output: 174 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 00:55:04,472 INFO L354 Elim1Store]: treesize reduction 2351, result has 17.5 percent of original size [2021-12-17 00:55:04,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 1378580003594293375 treesize of output 1378580003594293844 Killed by 15