./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/nla-digbench/freire1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3e5ce664 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 ../../../trunk/examples/svcomp/nla-digbench/freire1.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 b056c40c352516a88a49e796700e87b5fe62c1cb ....................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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 ../../../trunk/examples/svcomp/nla-digbench/freire1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 b056c40c352516a88a49e796700e87b5fe62c1cb .................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:38:00,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:38:00,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:38:01,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:38:01,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:38:01,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:38:01,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:38:01,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:38:01,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:38:01,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:38:01,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:38:01,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:38:01,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:38:01,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:38:01,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:38:01,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:38:01,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:38:01,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:38:01,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:38:01,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:38:01,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:38:01,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:38:01,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:38:01,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:38:01,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:38:01,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:38:01,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:38:01,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:38:01,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:38:01,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:38:01,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:38:01,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:38:01,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:38:01,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:38:01,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:38:01,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:38:01,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:38:01,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:38:01,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:38:01,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:38:01,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:38:01,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 21:38:01,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:38:01,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:38:01,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:38:01,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:38:01,140 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:38:01,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:38:01,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:38:01,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 21:38:01,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:38:01,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:38:01,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:38:01,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:38:01,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:38:01,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:38:01,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:38:01,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:38:01,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:38:01,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:38:01,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:38:01,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:38:01,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:01,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:38:01,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:38:01,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:38:01,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 21:38:01,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 21:38:01,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:38:01,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:38:01,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b056c40c352516a88a49e796700e87b5fe62c1cb [2020-12-02 21:38:01,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:38:01,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:38:01,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:38:01,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:38:01,614 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:38:01,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire1.c [2020-12-02 21:38:01,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e51924492/1ade58a4e7c6438c94089721b0527c8a/FLAGc18df0de5 [2020-12-02 21:38:02,363 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:38:02,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c [2020-12-02 21:38:02,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e51924492/1ade58a4e7c6438c94089721b0527c8a/FLAGc18df0de5 [2020-12-02 21:38:02,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e51924492/1ade58a4e7c6438c94089721b0527c8a [2020-12-02 21:38:02,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:38:02,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:38:02,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:02,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:38:02,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:38:02,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:02,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42924008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02, skipping insertion in model container [2020-12-02 21:38:02,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:02,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:38:02,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:38:02,905 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2020-12-02 21:38:02,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:02,936 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:38:02,950 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2020-12-02 21:38:02,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:02,977 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:38:02,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02 WrapperNode [2020-12-02 21:38:02,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:02,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:02,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:38:02,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:38:02,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:02,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:03,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:38:03,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:38:03,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:38:03,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... [2020-12-02 21:38:03,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:38:03,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:38:03,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:38:03,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:38:03,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 21:38:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:38:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:38:03,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:38:03,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:38:03,471 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-02 21:38:03,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:03 BoogieIcfgContainer [2020-12-02 21:38:03,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:38:03,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:38:03,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:38:03,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:38:03,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:38:02" (1/3) ... [2020-12-02 21:38:03,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b47e247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:03, skipping insertion in model container [2020-12-02 21:38:03,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:02" (2/3) ... [2020-12-02 21:38:03,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b47e247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:03, skipping insertion in model container [2020-12-02 21:38:03,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:03" (3/3) ... [2020-12-02 21:38:03,485 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1.c [2020-12-02 21:38:03,510 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:38:03,515 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-02 21:38:03,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-02 21:38:03,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:38:03,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:38:03,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:38:03,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:38:03,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:38:03,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:38:03,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:38:03,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:38:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-02 21:38:03,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-02 21:38:03,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:03,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-02 21:38:03,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:03,651 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-02 21:38:03,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:03,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611883670] [2020-12-02 21:38:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 21:38:03,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 21:38:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 21:38:03,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 21:38:03,864 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 21:38:03,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 21:38:03,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 21:38:03,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:38:03 BoogieIcfgContainer [2020-12-02 21:38:03,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:38:03,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:38:03,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:38:03,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:38:03,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:03" (3/4) ... [2020-12-02 21:38:03,899 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 21:38:03,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:38:03,902 INFO L168 Benchmark]: Toolchain (without parser) took 1186.08 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 21.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:03,903 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 35.7 MB. Free memory was 17.3 MB in the beginning and 17.3 MB in the end (delta: 17.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:38:03,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.54 ms. Allocated memory is still 44.0 MB. Free memory was 28.3 MB in the beginning and 28.4 MB in the end (delta: -94.3 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:03,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.24 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 27.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:38:03,906 INFO L168 Benchmark]: Boogie Preprocessor took 29.58 ms. Allocated memory is still 44.0 MB. Free memory was 27.0 MB in the beginning and 26.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:03,907 INFO L168 Benchmark]: RCFGBuilder took 420.44 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:03,908 INFO L168 Benchmark]: TraceAbstraction took 417.71 ms. Allocated memory is still 44.0 MB. Free memory was 23.5 MB in the beginning and 21.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 431.3 kB. Max. memory is 16.1 GB. [2020-12-02 21:38:03,909 INFO L168 Benchmark]: Witness Printer took 5.67 ms. Allocated memory is still 44.0 MB. Free memory was 21.8 MB in the beginning and 21.4 MB in the end (delta: 364.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:38:03,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 35.7 MB. Free memory was 17.3 MB in the beginning and 17.3 MB in the end (delta: 17.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.54 ms. Allocated memory is still 44.0 MB. Free memory was 28.3 MB in the beginning and 28.4 MB in the end (delta: -94.3 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.24 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 27.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.58 ms. Allocated memory is still 44.0 MB. Free memory was 27.0 MB in the beginning and 26.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 420.44 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 417.71 ms. Allocated memory is still 44.0 MB. Free memory was 23.5 MB in the beginning and 21.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 431.3 kB. Max. memory is 16.1 GB. * Witness Printer took 5.67 ms. Allocated memory is still 44.0 MB. Free memory was 21.8 MB in the beginning and 21.4 MB in the end (delta: 364.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 [L31] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:38:06,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:38:06,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:38:06,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:38:06,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:38:06,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:38:06,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:38:06,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:38:06,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:38:06,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:38:06,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:38:06,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:38:06,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:38:06,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:38:06,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:38:06,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:38:06,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:38:06,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:38:06,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:38:06,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:38:06,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:38:06,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:38:06,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:38:06,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:38:06,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:38:06,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:38:06,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:38:06,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:38:06,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:38:06,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:38:06,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:38:06,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:38:06,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:38:06,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:38:06,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:38:06,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:38:06,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:38:06,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:38:06,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:38:06,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:38:06,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:38:06,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 21:38:06,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:38:06,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:38:06,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:38:06,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:38:06,836 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:38:06,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:38:06,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:38:06,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:38:06,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:38:06,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:38:06,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:38:06,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:38:06,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 21:38:06,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 21:38:06,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:38:06,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:38:06,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:38:06,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:38:06,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:38:06,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:38:06,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:38:06,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:06,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:38:06,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:38:06,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:38:06,843 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 21:38:06,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-02 21:38:06,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:38:06,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:38:06,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 21:38:06,844 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b056c40c352516a88a49e796700e87b5fe62c1cb [2020-12-02 21:38:07,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:38:07,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:38:07,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:38:07,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:38:07,363 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:38:07,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire1.c [2020-12-02 21:38:07,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a747c27/e1f104cf115b4551817624fdf0328b7e/FLAG476e450aa [2020-12-02 21:38:08,173 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:38:08,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c [2020-12-02 21:38:08,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a747c27/e1f104cf115b4551817624fdf0328b7e/FLAG476e450aa [2020-12-02 21:38:08,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a747c27/e1f104cf115b4551817624fdf0328b7e [2020-12-02 21:38:08,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:38:08,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:38:08,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:08,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:38:08,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:38:08,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edfef80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08, skipping insertion in model container [2020-12-02 21:38:08,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:38:08,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:38:08,723 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2020-12-02 21:38:08,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:08,766 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:38:08,784 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2020-12-02 21:38:08,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:08,810 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:38:08,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08 WrapperNode [2020-12-02 21:38:08,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:08,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:08,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:38:08,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:38:08,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:08,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:38:08,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:38:08,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:38:08,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... [2020-12-02 21:38:08,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:38:08,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:38:08,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:38:08,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:38:08,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 21:38:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:38:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:38:09,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:38:17,947 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:38:17,948 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-02 21:38:17,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:17 BoogieIcfgContainer [2020-12-02 21:38:17,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:38:17,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:38:17,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:38:17,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:38:17,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:38:08" (1/3) ... [2020-12-02 21:38:17,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404a1f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:17, skipping insertion in model container [2020-12-02 21:38:17,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:08" (2/3) ... [2020-12-02 21:38:17,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404a1f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:17, skipping insertion in model container [2020-12-02 21:38:17,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:17" (3/3) ... [2020-12-02 21:38:17,961 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1.c [2020-12-02 21:38:17,979 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:38:17,984 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-02 21:38:17,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-02 21:38:18,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:38:18,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:38:18,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:38:18,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:38:18,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:38:18,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:38:18,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:38:18,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:38:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-02 21:38:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-02 21:38:18,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:18,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-02 21:38:18,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:18,063 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-02 21:38:18,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:38:18,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363145007] [2020-12-02 21:38:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 21:38:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:20,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 21:38:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:22,650 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from false [2020-12-02 21:38:32,957 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2020-12-02 21:38:39,103 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2020-12-02 21:38:41,142 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2020-12-02 21:38:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:41,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:38:43,245 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-12-02 21:38:45,301 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-02 21:38:47,365 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2020-12-02 21:38:49,411 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2020-12-02 21:38:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:49,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363145007] [2020-12-02 21:38:49,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:49,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-12-02 21:38:49,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701971439] [2020-12-02 21:38:49,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 21:38:49,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:38:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 21:38:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=9, Unknown=8, NotChecked=40, Total=72 [2020-12-02 21:38:49,438 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 9 states. [2020-12-02 21:38:51,491 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from false [2020-12-02 21:38:53,530 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from true [2020-12-02 21:38:55,574 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from false [2020-12-02 21:38:57,623 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from true [2020-12-02 21:38:59,677 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 v_prenex_1) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) .cse0) (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~a~0) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))))) is different from false [2020-12-02 21:39:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:20,940 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-12-02 21:39:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:39:20,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 5 [2020-12-02 21:39:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:21,001 INFO L225 Difference]: With dead ends: 33 [2020-12-02 21:39:21,002 INFO L226 Difference]: Without dead ends: 16 [2020-12-02 21:39:21,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=21, Invalid=10, Unknown=13, NotChecked=88, Total=132 [2020-12-02 21:39:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-02 21:39:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2020-12-02 21:39:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-02 21:39:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-02 21:39:21,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-12-02 21:39:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:21,036 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-02 21:39:21,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 21:39:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-02 21:39:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:39:21,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:21,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:21,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 21:39:21,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash 300765331, now seen corresponding path program 1 times [2020-12-02 21:39:21,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:39:21,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253894006] [2020-12-02 21:39:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 21:39:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:21,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 21:39:21,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:23,740 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2020-12-02 21:39:25,794 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from true [2020-12-02 21:39:27,865 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-12-02 21:39:29,921 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-02 21:39:36,119 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-12-02 21:39:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:36,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:39:38,219 WARN L838 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from false [2020-12-02 21:39:40,272 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from true [2020-12-02 21:39:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:42,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253894006] [2020-12-02 21:39:42,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:42,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-12-02 21:39:42,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197263028] [2020-12-02 21:39:42,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:39:42,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:39:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:39:42,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2020-12-02 21:39:42,356 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-12-02 21:39:46,626 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from false [2020-12-02 21:39:48,679 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from true [2020-12-02 21:39:50,729 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-12-02 21:39:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:50,737 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-12-02 21:39:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:39:50,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-02 21:39:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:50,737 INFO L225 Difference]: With dead ends: 13 [2020-12-02 21:39:50,738 INFO L226 Difference]: Without dead ends: 9 [2020-12-02 21:39:50,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2020-12-02 21:39:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-02 21:39:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-02 21:39:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-02 21:39:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-02 21:39:50,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-12-02 21:39:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:50,743 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-02 21:39:50,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:39:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-02 21:39:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:39:50,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:50,744 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:50,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 21:39:50,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:50,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash 300806046, now seen corresponding path program 1 times [2020-12-02 21:39:50,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:39:50,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514260660] [2020-12-02 21:39:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 21:39:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 21:39:59,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 21:40:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 21:40:11,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 21:40:11,665 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 21:40:11,665 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 21:40:11,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 21:40:11,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:11 BoogieIcfgContainer [2020-12-02 21:40:11,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:11,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:11,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:11,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:11,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:17" (3/4) ... [2020-12-02 21:40:11,895 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 21:40:11,943 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 21:40:11,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:11,945 INFO L168 Benchmark]: Toolchain (without parser) took 123429.13 ms. Allocated memory is still 50.3 MB. Free memory was 34.8 MB in the beginning and 28.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:11,946 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory is still 26.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:11,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.59 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 24.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:11,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.45 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 34.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:11,948 INFO L168 Benchmark]: Boogie Preprocessor took 32.60 ms. Allocated memory is still 50.3 MB. Free memory was 34.7 MB in the beginning and 33.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:11,949 INFO L168 Benchmark]: RCFGBuilder took 9049.66 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 32.5 MB in the end (delta: 851.0 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:11,950 INFO L168 Benchmark]: TraceAbstraction took 113939.42 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 30.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:11,951 INFO L168 Benchmark]: Witness Printer took 51.78 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 28.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:11,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory is still 26.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.59 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 24.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.45 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 34.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.60 ms. Allocated memory is still 50.3 MB. Free memory was 34.7 MB in the beginning and 33.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 9049.66 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 32.5 MB in the end (delta: 851.0 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 113939.42 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 30.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 51.78 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 28.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 [L31] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L34] COND FALSE !(!(x > r)) [L36] x = x - r [L37] r = r + 1 [L31] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 113.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 39.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 5 SDslu, 31 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 23.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.9s SatisfiabilityAnalysisTime, 49.6s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 4 QuantifiedInterpolants, 2339 SizeOfPredicates, 17 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...