./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bbff5832e71471655f4416229b3fdd1dac2e479 ................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bbff5832e71471655f4416229b3fdd1dac2e479 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:33:08,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:33:08,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:33:08,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:33:08,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:33:08,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:33:08,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:33:08,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:33:08,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:33:08,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:33:08,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:33:08,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:33:08,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:33:08,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:33:08,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:33:08,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:33:08,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:33:08,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:33:08,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:33:08,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:33:08,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:33:08,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:33:08,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:33:08,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:33:08,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:33:08,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:33:08,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:33:08,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:33:08,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:33:08,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:33:08,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:33:08,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:33:08,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:33:08,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:33:08,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:33:08,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:33:08,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:33:08,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:33:08,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:33:08,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:33:08,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:33:08,570 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:33:08,598 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:33:08,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:33:08,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:33:08,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:33:08,601 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:33:08,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:33:08,601 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:33:08,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:33:08,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:33:08,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:33:08,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:33:08,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:33:08,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:33:08,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:33:08,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:33:08,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:33:08,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:33:08,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:33:08,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:33:08,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:33:08,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:33:08,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:33:08,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:33:08,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:33:08,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:33:08,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:33:08,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:33:08,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:33:08,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer 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(__VERIFIER_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 -> 1bbff5832e71471655f4416229b3fdd1dac2e479 [2019-11-15 23:33:08,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:33:08,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:33:08,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:33:08,682 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:33:08,682 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:33:08,684 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2019-11-15 23:33:08,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/e6cf7d096/dd557dfad12e43ac9847f7c9bdb191d9/FLAG6fcda969c [2019-11-15 23:33:09,145 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:33:09,146 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2019-11-15 23:33:09,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/e6cf7d096/dd557dfad12e43ac9847f7c9bdb191d9/FLAG6fcda969c [2019-11-15 23:33:09,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/e6cf7d096/dd557dfad12e43ac9847f7c9bdb191d9 [2019-11-15 23:33:09,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:33:09,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:33:09,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:09,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:33:09,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:33:09,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeb5e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09, skipping insertion in model container [2019-11-15 23:33:09,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,559 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:33:09,574 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:33:09,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:09,877 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:33:09,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:09,906 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:33:09,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09 WrapperNode [2019-11-15 23:33:09,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:09,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:09,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:33:09,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:33:09,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:09,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:33:09,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:33:09,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:33:09,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... [2019-11-15 23:33:09,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:33:09,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:33:09,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:33:09,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:33:09,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/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 [2019-11-15 23:33:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:33:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:33:10,165 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:33:10,165 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 23:33:10,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:10 BoogieIcfgContainer [2019-11-15 23:33:10,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:33:10,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:33:10,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:33:10,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:33:10,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:33:09" (1/3) ... [2019-11-15 23:33:10,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571385f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:10, skipping insertion in model container [2019-11-15 23:33:10,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:09" (2/3) ... [2019-11-15 23:33:10,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571385f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:10, skipping insertion in model container [2019-11-15 23:33:10,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:10" (3/3) ... [2019-11-15 23:33:10,174 INFO L109 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2019-11-15 23:33:10,185 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:33:10,192 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:33:10,204 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:33:10,237 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:33:10,238 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:33:10,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:33:10,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:33:10,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:33:10,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:33:10,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:33:10,241 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:33:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-15 23:33:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 23:33:10,260 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:10,261 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 23:33:10,263 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:10,269 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2019-11-15 23:33:10,276 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:33:10,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902067369] [2019-11-15 23:33:10,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:10,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:10,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:33:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:33:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:33:10,374 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:33:10,374 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:33:10,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:33:10 BoogieIcfgContainer [2019-11-15 23:33:10,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:33:10,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:33:10,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:33:10,394 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:33:10,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:10" (3/4) ... [2019-11-15 23:33:10,399 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:33:10,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:33:10,401 INFO L168 Benchmark]: Toolchain (without parser) took 856.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:10,402 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:10,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:10,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:10,404 INFO L168 Benchmark]: Boogie Preprocessor took 20.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:10,405 INFO L168 Benchmark]: RCFGBuilder took 206.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:10,405 INFO L168 Benchmark]: TraceAbstraction took 226.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:10,406 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:10,409 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 226.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 2.5; VAL [__return_main=0] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L25] __VERIFIER_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 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 0.1.24-cad4683 [2019-11-15 23:33:12,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:33:12,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:33:12,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:33:12,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:33:12,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:33:12,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:33:12,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:33:12,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:33:12,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:33:12,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:33:12,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:33:12,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:33:12,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:33:12,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:33:12,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:33:12,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:33:12,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:33:12,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:33:12,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:33:12,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:33:12,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:33:12,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:33:12,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:33:12,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:33:12,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:33:12,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:33:12,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:33:12,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:33:12,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:33:12,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:33:12,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:33:12,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:33:12,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:33:12,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:33:12,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:33:12,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:33:12,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:33:12,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:33:12,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:33:12,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:33:12,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:33:12,962 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:33:12,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:33:12,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:33:12,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:33:12,965 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:33:12,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:33:12,966 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:33:12,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:33:12,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:33:12,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:33:12,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:33:12,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:33:12,968 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:33:12,968 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:33:12,969 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:33:12,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:33:12,970 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:33:12,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:33:12,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:33:12,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:33:12,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:33:12,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:33:12,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:33:12,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:33:12,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:33:12,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:33:12,973 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:33:12,973 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:33:12,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:33:12,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:33:12,974 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer 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(__VERIFIER_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 -> 1bbff5832e71471655f4416229b3fdd1dac2e479 [2019-11-15 23:33:13,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:33:13,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:33:13,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:33:13,053 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:33:13,054 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:33:13,055 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2019-11-15 23:33:13,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/90f4db040/e83e792676c54805ae2101a893ce3560/FLAG2404aa429 [2019-11-15 23:33:13,590 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:33:13,590 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2019-11-15 23:33:13,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/90f4db040/e83e792676c54805ae2101a893ce3560/FLAG2404aa429 [2019-11-15 23:33:14,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/data/90f4db040/e83e792676c54805ae2101a893ce3560 [2019-11-15 23:33:14,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:33:14,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:33:14,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:14,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:33:14,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:33:14,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3901af83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14, skipping insertion in model container [2019-11-15 23:33:14,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,029 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:33:14,042 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:33:14,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:14,214 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:33:14,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:14,244 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:33:14,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14 WrapperNode [2019-11-15 23:33:14,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:14,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:14,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:33:14,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:33:14,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:14,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:33:14,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:33:14,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:33:14,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... [2019-11-15 23:33:14,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:33:14,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:33:14,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:33:14,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:33:14,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/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 [2019-11-15 23:33:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:33:14,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:33:15,441 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:33:15,441 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 23:33:15,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:15 BoogieIcfgContainer [2019-11-15 23:33:15,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:33:15,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:33:15,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:33:15,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:33:15,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:33:14" (1/3) ... [2019-11-15 23:33:15,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:15, skipping insertion in model container [2019-11-15 23:33:15,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:14" (2/3) ... [2019-11-15 23:33:15,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:15, skipping insertion in model container [2019-11-15 23:33:15,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:15" (3/3) ... [2019-11-15 23:33:15,451 INFO L109 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2019-11-15 23:33:15,461 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:33:15,467 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:33:15,476 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:33:15,497 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:33:15,497 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:33:15,497 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:33:15,498 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:33:15,498 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:33:15,498 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:33:15,498 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:33:15,499 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:33:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-15 23:33:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 23:33:15,516 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:15,517 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 23:33:15,518 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:15,523 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2019-11-15 23:33:15,531 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:15,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503584648] [2019-11-15 23:33:15,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/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 [2019-11-15 23:33:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:15,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:33:15,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:18,037 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_ULTIMATE.start_main_~main__x~0)) is different from true [2019-11-15 23:33:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:18,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:18,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503584648] [2019-11-15 23:33:18,074 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:18,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:33:18,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725771633] [2019-11-15 23:33:18,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:33:18,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:18,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:33:18,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2019-11-15 23:33:18,091 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-15 23:33:23,989 WARN L191 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2019-11-15 23:33:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:26,157 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-11-15 23:33:26,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:33:26,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-15 23:33:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:26,180 INFO L225 Difference]: With dead ends: 17 [2019-11-15 23:33:26,180 INFO L226 Difference]: Without dead ends: 8 [2019-11-15 23:33:26,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2019-11-15 23:33:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-15 23:33:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 23:33:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 23:33:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-15 23:33:26,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-11-15 23:33:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:26,212 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-15 23:33:26,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:33:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-15 23:33:26,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 23:33:26,213 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:26,213 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-15 23:33:26,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:33:26,414 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:26,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 1 times [2019-11-15 23:33:26,414 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:26,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277866300] [2019-11-15 23:33:26,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/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 [2019-11-15 23:33:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:26,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:33:26,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:32,187 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 13 [2019-11-15 23:33:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:32,191 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:34,468 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2019-11-15 23:33:37,601 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2019-11-15 23:33:40,012 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2019-11-15 23:33:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2019-11-15 23:33:40,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277866300] [2019-11-15 23:33:40,021 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:33:40,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 23:33:40,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269432001] [2019-11-15 23:33:40,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:33:40,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:40,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:33:40,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=21, Unknown=3, NotChecked=18, Total=56 [2019-11-15 23:33:40,023 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2019-11-15 23:33:42,460 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (not (let ((.cse1 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2019-11-15 23:33:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:51,634 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-15 23:33:51,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:33:51,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-15 23:33:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:51,635 INFO L225 Difference]: With dead ends: 13 [2019-11-15 23:33:51,635 INFO L226 Difference]: Without dead ends: 10 [2019-11-15 23:33:51,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=16, Invalid=22, Unknown=4, NotChecked=30, Total=72 [2019-11-15 23:33:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-15 23:33:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-15 23:33:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 23:33:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-15 23:33:51,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-11-15 23:33:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:51,640 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-15 23:33:51,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:33:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-15 23:33:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 23:33:51,642 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:51,642 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2019-11-15 23:33:51,848 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:33:51,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 2 times [2019-11-15 23:33:51,849 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:51,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5014425] [2019-11-15 23:33:51,849 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/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 [2019-11-15 23:33:52,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:33:52,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:33:52,740 WARN L254 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-15 23:33:52,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:03,654 WARN L191 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 15 [2019-11-15 23:34:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:03,667 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:34:12,578 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from true [2019-11-15 23:34:15,083 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2019-11-15 23:34:17,534 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2019-11-15 23:34:20,270 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2019-11-15 23:34:22,952 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2019-11-15 23:34:25,814 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2019-11-15 23:34:28,722 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2019-11-15 23:34:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2019-11-15 23:34:28,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5014425] [2019-11-15 23:34:28,734 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:34:28,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-11-15 23:34:28,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099648158] [2019-11-15 23:34:28,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 23:34:28,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:34:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 23:34:28,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=54, Unknown=10, NotChecked=68, Total=156 [2019-11-15 23:34:28,736 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 13 states. [2019-11-15 23:34:31,709 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse2) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))))) is different from true [2019-11-15 23:34:34,449 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2019-11-15 23:34:36,948 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2019-11-15 23:34:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:44,464 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-15 23:34:44,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:34:44,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2019-11-15 23:34:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:44,466 INFO L225 Difference]: With dead ends: 16 [2019-11-15 23:34:44,467 INFO L226 Difference]: Without dead ends: 12 [2019-11-15 23:34:44,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=34, Invalid=70, Unknown=14, NotChecked=154, Total=272 [2019-11-15 23:34:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-15 23:34:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-15 23:34:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 23:34:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-15 23:34:44,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-11-15 23:34:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:44,471 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-15 23:34:44,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 23:34:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-15 23:34:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:34:44,472 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:44,472 INFO L380 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2019-11-15 23:34:44,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:34:44,683 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:44,683 INFO L82 PathProgramCache]: Analyzing trace with hash 555748550, now seen corresponding path program 3 times [2019-11-15 23:34:44,683 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:34:44,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976126113] [2019-11-15 23:34:44,684 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12397e84-2692-4d3c-9f74-66457e9869ea/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-15 23:34:45,661 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 23:34:45,661 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:34:45,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:34:45,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:49,199 WARN L191 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 7 [2019-11-15 23:34:51,689 WARN L838 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~main__x~0 v_ULTIMATE.start_main_~main__x~0_16)) (= (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x~0)))) is different from false [2019-11-15 23:34:53,908 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~main__x~0 v_ULTIMATE.start_main_~main__x~0_16)) (= (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x~0)))) is different from true [2019-11-15 23:34:53,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:35:06,708 WARN L838 $PredicateComparison]: unable to prove that (or (and (= (bvadd c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16))))))) (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_ULTIMATE.start_main_~main__x~0_16)))))) (= c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) is different from false [2019-11-15 23:35:14,226 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from false [2019-11-15 23:35:16,653 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from true [2019-11-15 23:35:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 1 not checked. [2019-11-15 23:35:16,657 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:35:26,155 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) is different from false [2019-11-15 23:35:34,508 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from false [2019-11-15 23:35:36,996 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2019-11-15 23:36:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 11 not checked. [2019-11-15 23:36:01,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976126113] [2019-11-15 23:36:01,733 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:36:01,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2019-11-15 23:36:01,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110515693] [2019-11-15 23:36:01,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:36:01,734 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:36:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:36:01,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=13, Unknown=10, NotChecked=50, Total=90 [2019-11-15 23:36:01,735 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2019-11-15 23:36:04,395 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (or (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))))) is different from false [2019-11-15 23:36:07,155 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (or (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))))) is different from true [2019-11-15 23:36:10,219 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse2 (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (or (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse2) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_18 .cse4))) (or (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse4) .cse3)) (fp.eq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~main__x~0 v_ULTIMATE.start_main_~main__x~0_16)) (= (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x~0))) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse1) (not .cse2)))) is different from false [2019-11-15 23:36:13,023 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse2 (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (or (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse2) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_18 .cse4))) (or (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse4) .cse3)) (fp.eq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~main__x~0 v_ULTIMATE.start_main_~main__x~0_16)) (= (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x~0))) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse1) (not .cse2)))) is different from true [2019-11-15 23:36:15,508 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (= c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) (and (or (and (= (bvadd c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16))))))) (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_ULTIMATE.start_main_~main__x~0_16)))))) .cse4)) (not .cse4))) is different from false [2019-11-15 23:36:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:36:15,515 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-15 23:36:15,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:36:15,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-11-15 23:36:15,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:36:15,516 INFO L225 Difference]: With dead ends: 12 [2019-11-15 23:36:15,516 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:36:15,517 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=23, Invalid=14, Unknown=15, NotChecked=104, Total=156 [2019-11-15 23:36:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:36:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:36:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:36:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:36:15,518 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-15 23:36:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:36:15,518 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:36:15,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:36:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:36:15,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:36:15,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 23:36:15,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:37:28,761 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-15 23:37:28,762 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:92) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.UndoableWrapperScript.push(UndoableWrapperScript.java:53) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:737) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walkParam(SimplifyDDA.java:526) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:412) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:178) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:978) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 34 more [2019-11-15 23:37:28,766 INFO L168 Benchmark]: Toolchain (without parser) took 254757.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 951.0 MB in the beginning and 960.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 90.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:28,767 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:37:28,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.95 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:28,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:28,776 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:28,778 INFO L168 Benchmark]: RCFGBuilder took 1063.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:28,782 INFO L168 Benchmark]: TraceAbstraction took 253320.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 960.7 MB in the end (delta: 114.3 MB). Peak memory consumption was 114.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:28,787 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.95 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 99.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1063.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 253320.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 960.7 MB in the end (delta: 114.3 MB). Peak memory consumption was 114.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...