./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.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/nla-digbench-scaling/prod4br-ll_valuebound1.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 c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 13:45:50,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 13:45:50,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 13:45:50,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 13:45:50,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 13:45:50,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 13:45:50,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 13:45:50,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 13:45:50,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 13:45:50,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 13:45:50,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 13:45:50,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 13:45:50,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 13:45:50,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 13:45:50,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 13:45:50,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 13:45:50,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 13:45:50,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 13:45:50,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 13:45:50,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 13:45:50,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 13:45:50,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 13:45:50,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 13:45:50,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 13:45:50,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 13:45:50,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 13:45:50,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 13:45:50,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 13:45:50,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 13:45:50,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 13:45:50,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 13:45:50,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 13:45:50,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 13:45:50,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 13:45:50,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 13:45:50,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 13:45:50,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 13:45:50,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 13:45:50,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 13:45:50,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 13:45:50,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 13:45:50,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 13:45:50,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 13:45:50,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 13:45:50,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 13:45:50,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 13:45:50,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 13:45:50,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 13:45:50,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 13:45:50,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 13:45:50,181 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 13:45:50,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 13:45:50,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 13:45:50,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 13:45:50,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 13:45:50,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 13:45:50,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 13:45:50,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 13:45:50,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 13:45:50,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 13:45:50,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 13:45:50,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 13:45:50,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 13:45:50,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 13:45:50,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 13:45:50,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 13:45:50,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 13:45:50,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 13:45:50,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 13:45:50,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa [2021-12-17 13:45:50,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 13:45:50,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 13:45:50,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 13:45:50,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 13:45:50,407 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 13:45:50,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-12-17 13:45:50,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871a39452/19d0caff0f2e44418fbf06f3baf2fca3/FLAG86bb4ce13 [2021-12-17 13:45:50,817 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 13:45:50,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-12-17 13:45:50,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871a39452/19d0caff0f2e44418fbf06f3baf2fca3/FLAG86bb4ce13 [2021-12-17 13:45:50,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871a39452/19d0caff0f2e44418fbf06f3baf2fca3 [2021-12-17 13:45:50,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 13:45:50,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 13:45:50,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 13:45:50,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 13:45:50,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 13:45:50,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:45:50" (1/1) ... [2021-12-17 13:45:50,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67969740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:50, skipping insertion in model container [2021-12-17 13:45:50,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:45:50" (1/1) ... [2021-12-17 13:45:50,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 13:45:50,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 13:45:50,980 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/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2021-12-17 13:45:50,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 13:45:51,002 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 13:45:51,010 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/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2021-12-17 13:45:51,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 13:45:51,036 INFO L208 MainTranslator]: Completed translation [2021-12-17 13:45:51,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51 WrapperNode [2021-12-17 13:45:51,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 13:45:51,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 13:45:51,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 13:45:51,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 13:45:51,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,071 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-17 13:45:51,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 13:45:51,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 13:45:51,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 13:45:51,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 13:45:51,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 13:45:51,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 13:45:51,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 13:45:51,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 13:45:51,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (1/1) ... [2021-12-17 13:45:51,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 13:45:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:51,135 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 13:45:51,140 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 13:45:51,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 13:45:51,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 13:45:51,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 13:45:51,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 13:45:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 13:45:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 13:45:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 13:45:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 13:45:51,194 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 13:45:51,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 13:45:51,320 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 13:45:51,333 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 13:45:51,333 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 13:45:51,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:45:51 BoogieIcfgContainer [2021-12-17 13:45:51,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 13:45:51,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 13:45:51,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 13:45:51,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 13:45:51,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:45:50" (1/3) ... [2021-12-17 13:45:51,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104dc521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:45:51, skipping insertion in model container [2021-12-17 13:45:51,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:51" (2/3) ... [2021-12-17 13:45:51,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104dc521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:45:51, skipping insertion in model container [2021-12-17 13:45:51,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:45:51" (3/3) ... [2021-12-17 13:45:51,341 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2021-12-17 13:45:51,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 13:45:51,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 13:45:51,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 13:45:51,391 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 13:45:51,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 13:45:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 13:45:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 13:45:51,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:51,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:51,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1472905330, now seen corresponding path program 1 times [2021-12-17 13:45:51,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:51,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036259828] [2021-12-17 13:45:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:51,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 13:45:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 13:45:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 13:45:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:51,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036259828] [2021-12-17 13:45:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036259828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 13:45:51,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 13:45:51,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 13:45:51,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112421172] [2021-12-17 13:45:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 13:45:51,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 13:45:51,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 13:45:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 13:45:51,599 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 13:45:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:51,626 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-17 13:45:51,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 13:45:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-17 13:45:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:51,643 INFO L225 Difference]: With dead ends: 55 [2021-12-17 13:45:51,643 INFO L226 Difference]: Without dead ends: 25 [2021-12-17 13:45:51,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 13:45:51,647 INFO L933 BasicCegarLoop]: 36 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, 36 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 13:45:51,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 13:45:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-17 13:45:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-17 13:45:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 13:45:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-12-17 13:45:51,731 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 24 [2021-12-17 13:45:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:51,731 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-12-17 13:45:51,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 13:45:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-12-17 13:45:51,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 13:45:51,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:51,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:51,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 13:45:51,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash 324198000, now seen corresponding path program 1 times [2021-12-17 13:45:51,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:51,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026264936] [2021-12-17 13:45:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:51,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:51,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:51,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391306831] [2021-12-17 13:45:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:51,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:51,812 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 13:45:51,813 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 13:45:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:51,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-17 13:45:51,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:52,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 13:45:52,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:52,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026264936] [2021-12-17 13:45:52,070 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:52,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391306831] [2021-12-17 13:45:52,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391306831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 13:45:52,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 13:45:52,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 13:45:52,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925414275] [2021-12-17 13:45:52,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 13:45:52,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 13:45:52,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 13:45:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-17 13:45:52,073 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 13:45:52,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:52,193 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2021-12-17 13:45:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 13:45:52,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2021-12-17 13:45:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:52,195 INFO L225 Difference]: With dead ends: 51 [2021-12-17 13:45:52,196 INFO L226 Difference]: Without dead ends: 37 [2021-12-17 13:45:52,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-17 13:45:52,198 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:52,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 112 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 13:45:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-17 13:45:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-12-17 13:45:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 13:45:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-17 13:45:52,216 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 24 [2021-12-17 13:45:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:52,217 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-17 13:45:52,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 13:45:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-17 13:45:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 13:45:52,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:52,218 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:52,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 13:45:52,420 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 13:45:52,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash 693549193, now seen corresponding path program 1 times [2021-12-17 13:45:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:52,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727269910] [2021-12-17 13:45:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:52,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:52,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:52,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712994215] [2021-12-17 13:45:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:52,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:52,459 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 13:45:52,491 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 13:45:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:52,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 13:45:52,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 13:45:52,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:45:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:52,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727269910] [2021-12-17 13:45:52,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712994215] [2021-12-17 13:45:52,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712994215] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 13:45:52,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 13:45:52,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2021-12-17 13:45:52,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210950736] [2021-12-17 13:45:52,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 13:45:52,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 13:45:52,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 13:45:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-17 13:45:52,903 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 13:45:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:53,218 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-12-17 13:45:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 13:45:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2021-12-17 13:45:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:53,220 INFO L225 Difference]: With dead ends: 45 [2021-12-17 13:45:53,220 INFO L226 Difference]: Without dead ends: 41 [2021-12-17 13:45:53,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-17 13:45:53,221 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:53,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 132 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 13:45:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-17 13:45:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-12-17 13:45:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 13:45:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-12-17 13:45:53,226 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 30 [2021-12-17 13:45:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:53,226 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-12-17 13:45:53,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 13:45:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-12-17 13:45:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 13:45:53,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:53,228 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 13:45:53,244 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 13:45:53,447 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 13:45:53,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1144244799, now seen corresponding path program 1 times [2021-12-17 13:45:53,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:53,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549012929] [2021-12-17 13:45:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:53,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:53,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:53,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307590871] [2021-12-17 13:45:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:53,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:53,458 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 13:45:53,459 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 13:45:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:53,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 13:45:53,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 13:45:53,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:45:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 13:45:53,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549012929] [2021-12-17 13:45:53,759 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307590871] [2021-12-17 13:45:53,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307590871] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 13:45:53,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 13:45:53,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-17 13:45:53,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670417195] [2021-12-17 13:45:53,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 13:45:53,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 13:45:53,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 13:45:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 13:45:53,761 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-17 13:45:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:53,843 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-12-17 13:45:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 13:45:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 34 [2021-12-17 13:45:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:53,844 INFO L225 Difference]: With dead ends: 56 [2021-12-17 13:45:53,844 INFO L226 Difference]: Without dead ends: 38 [2021-12-17 13:45:53,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-17 13:45:53,845 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:53,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 121 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 13:45:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-17 13:45:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-12-17 13:45:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 13:45:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-12-17 13:45:53,859 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2021-12-17 13:45:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:53,859 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-12-17 13:45:53,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-17 13:45:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-12-17 13:45:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 13:45:53,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:53,862 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 13:45:53,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 13:45:54,063 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 13:45:54,063 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1201503101, now seen corresponding path program 1 times [2021-12-17 13:45:54,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:54,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586495785] [2021-12-17 13:45:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:54,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:54,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:54,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567943109] [2021-12-17 13:45:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:54,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:54,072 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 13:45:54,073 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 13:45:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:54,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-17 13:45:54,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:54,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:45:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:54,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:54,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586495785] [2021-12-17 13:45:54,591 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:54,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567943109] [2021-12-17 13:45:54,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567943109] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 13:45:54,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 13:45:54,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 17 [2021-12-17 13:45:54,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110421578] [2021-12-17 13:45:54,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 13:45:54,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-17 13:45:54,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-17 13:45:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-12-17 13:45:54,593 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-17 13:45:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:54,707 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-12-17 13:45:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 13:45:54,709 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 34 [2021-12-17 13:45:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:54,709 INFO L225 Difference]: With dead ends: 52 [2021-12-17 13:45:54,709 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 13:45:54,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-12-17 13:45:54,710 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:54,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 138 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 13:45:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 13:45:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 13:45:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 13:45:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 13:45:54,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-12-17 13:45:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:54,712 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 13:45:54,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-17 13:45:54,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 13:45:54,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 13:45:54,714 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 13:45:54,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-17 13:45:54,931 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 13:45:54,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 13:45:55,241 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 13:45:55,241 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-12-17 13:45:55,241 INFO L858 garLoopResultBuilder]: For program point L58(line 58) no Hoare annotation was computed. [2021-12-17 13:45:55,241 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse4 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~p~0#1|)) .cse3 (= (+ |ULTIMATE.start_main_~a~0#1| 1) |ULTIMATE.start_main_~x~0#1|) .cse4) (and .cse0 .cse1 .cse2 (= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse3 (<= 1 |ULTIMATE.start_main_~p~0#1|) .cse4))) [2021-12-17 13:45:55,242 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L861 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-12-17 13:45:55,242 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 0 |ULTIMATE.start_main_~x~0#1|)) [2021-12-17 13:45:55,242 INFO L854 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|)) [2021-12-17 13:45:55,242 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse4 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~p~0#1|)) .cse3 (= (+ |ULTIMATE.start_main_~a~0#1| 1) |ULTIMATE.start_main_~x~0#1|) .cse4) (and .cse0 .cse1 .cse2 (= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse3 (<= 1 |ULTIMATE.start_main_~p~0#1|) .cse4))) [2021-12-17 13:45:55,242 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2021-12-17 13:45:55,242 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-12-17 13:45:55,242 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3) (and (<= |ULTIMATE.start_main_~x~0#1| 1) .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~p~0#1|)) (= (+ |ULTIMATE.start_main_~a~0#1| 1) |ULTIMATE.start_main_~x~0#1|) .cse3))) [2021-12-17 13:45:55,242 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3) (and (<= |ULTIMATE.start_main_~x~0#1| 1) .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~p~0#1|)) (= (+ |ULTIMATE.start_main_~a~0#1| 1) |ULTIMATE.start_main_~x~0#1|) .cse3))) [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-12-17 13:45:55,243 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-12-17 13:45:55,245 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-17 13:45:55,246 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 13:45:55,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 01:45:55 BoogieIcfgContainer [2021-12-17 13:45:55,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 13:45:55,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 13:45:55,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 13:45:55,257 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 13:45:55,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:45:51" (3/4) ... [2021-12-17 13:45:55,259 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 13:45:55,263 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-17 13:45:55,263 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-17 13:45:55,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 13:45:55,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 13:45:55,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 13:45:55,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 13:45:55,287 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 13:45:55,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 13:45:55,288 INFO L158 Benchmark]: Toolchain (without parser) took 4449.57ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.8MB in the beginning and 48.3MB in the end (delta: 29.5MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,288 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 13:45:55,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.11ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 83.2MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.87ms. Allocated memory is still 107.0MB. Free memory was 83.2MB in the beginning and 81.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,289 INFO L158 Benchmark]: Boogie Preprocessor took 35.84ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,289 INFO L158 Benchmark]: RCFGBuilder took 225.68ms. Allocated memory is still 107.0MB. Free memory was 80.2MB in the beginning and 70.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,290 INFO L158 Benchmark]: TraceAbstraction took 3920.99ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.8MB in the beginning and 51.4MB in the end (delta: 18.3MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,290 INFO L158 Benchmark]: Witness Printer took 30.66ms. Allocated memory is still 130.0MB. Free memory was 51.4MB in the beginning and 48.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 13:45:55,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.11ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 83.2MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.87ms. Allocated memory is still 107.0MB. Free memory was 83.2MB in the beginning and 81.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.84ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.68ms. Allocated memory is still 107.0MB. Free memory was 80.2MB in the beginning and 70.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3920.99ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.8MB in the beginning and 51.4MB in the end (delta: 18.3MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. * Witness Printer took 30.66ms. Allocated memory is still 130.0MB. Free memory was 51.4MB in the beginning and 48.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 539 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 433 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547 IncrementalHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 106 mSDtfsCounter, 547 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 175 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 31 PreInvPairs, 42 NumberOfFragments, 286 HoareAnnotationTreeSize, 31 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 356 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 1030 SizeOfPredicates, 22 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 98/116 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((b == y && y <= 1) && a == x) && a <= 1) && p == 1) && q == 0) && 0 <= a) && 1 <= y) || (((((((x <= 1 && y <= 1) && p == 1) && 0 <= a) && b + 1 == y) && q == a * p + b * p + p) && a + 1 == x) && 1 <= y) RESULT: Ultimate proved your program to be correct! [2021-12-17 13:45:55,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE