./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.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_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/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 3a552ed0b53624bc27612451ed4207d0101db39b .......................................................................................................................................................................................................................... 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_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/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 3a552ed0b53624bc27612451ed4207d0101db39b .............................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:13:00,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:13:00,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:13:00,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:13:00,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:13:00,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:13:00,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:13:00,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:13:00,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:13:00,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:13:00,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:13:00,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:13:00,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:13:00,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:13:00,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:13:00,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:13:00,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:13:00,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:13:00,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:13:00,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:13:00,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:13:00,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:13:00,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:13:00,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:13:00,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:13:00,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:13:00,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:13:00,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:13:00,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:13:00,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:13:00,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:13:00,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:13:00,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:13:00,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:13:00,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:13:00,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:13:00,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:13:00,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:13:00,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:13:00,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:13:00,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:13:00,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:13:00,631 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:13:00,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:13:00,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:13:00,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:13:00,633 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:13:00,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:13:00,634 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:13:00,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:13:00,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:13:00,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:13:00,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:13:00,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:13:00,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:13:00,635 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:13:00,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:13:00,636 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:13:00,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:13:00,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:13:00,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:13:00,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:13:00,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:13:00,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:13:00,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:13:00,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:13:00,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:13:00,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:13:00,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:13:00,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:13:00,639 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_189aaee4-ee47-4cf1-8d97-687481373e52/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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2019-11-15 21:13:00,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:13:00,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:13:00,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:13:00,679 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:13:00,679 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:13:00,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-15 21:13:00,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/ac5afdc54/329cf02253814409824605c92235a267/FLAG4e6721ab0 [2019-11-15 21:13:01,135 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:13:01,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-15 21:13:01,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/ac5afdc54/329cf02253814409824605c92235a267/FLAG4e6721ab0 [2019-11-15 21:13:01,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/ac5afdc54/329cf02253814409824605c92235a267 [2019-11-15 21:13:01,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:13:01,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:13:01,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:01,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:13:01,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:13:01,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4c723c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01, skipping insertion in model container [2019-11-15 21:13:01,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,534 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:13:01,545 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:13:01,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:01,744 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:13:01,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:01,768 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:13:01,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01 WrapperNode [2019-11-15 21:13:01,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:01,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:01,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:13:01,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:13:01,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:01,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:13:01,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:13:01,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:13:01,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... [2019-11-15 21:13:01,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:13:01,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:13:01,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:13:01,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:13:01,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/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 21:13:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:13:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:13:02,008 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:13:02,008 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 21:13:02,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:02 BoogieIcfgContainer [2019-11-15 21:13:02,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:13:02,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:13:02,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:13:02,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:13:02,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:13:01" (1/3) ... [2019-11-15 21:13:02,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c22bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:02, skipping insertion in model container [2019-11-15 21:13:02,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:01" (2/3) ... [2019-11-15 21:13:02,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c22bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:02, skipping insertion in model container [2019-11-15 21:13:02,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:02" (3/3) ... [2019-11-15 21:13:02,021 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-15 21:13:02,029 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:13:02,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:13:02,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:13:02,073 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:13:02,073 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:13:02,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:13:02,073 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:13:02,074 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:13:02,074 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:13:02,074 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:13:02,074 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:13:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-15 21:13:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 21:13:02,090 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:02,090 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 21:13:02,092 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:02,097 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-15 21:13:02,104 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:13:02,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280809582] [2019-11-15 21:13:02,104 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:02,104 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:02,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:13:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:13:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:13:02,195 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:13:02,196 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:13:02,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:13:02 BoogieIcfgContainer [2019-11-15 21:13:02,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:13:02,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:13:02,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:13:02,208 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:13:02,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:02" (3/4) ... [2019-11-15 21:13:02,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:13:02,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:13:02,213 INFO L168 Benchmark]: Toolchain (without parser) took 690.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:02,214 INFO L168 Benchmark]: CDTParser took 0.23 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 21:13:02,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -156.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:02,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:02,215 INFO L168 Benchmark]: Boogie Preprocessor took 17.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:02,216 INFO L168 Benchmark]: RCFGBuilder took 192.20 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: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:02,217 INFO L168 Benchmark]: TraceAbstraction took 197.27 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 21:13:02,217 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:02,220 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 246.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -156.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 192.20 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: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 197.27 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. * Witness Printer took 3.11 ms. Allocated memory is still 1.1 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: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=8occurred 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, 3 NumberOfCodeBlocks, 3 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 21:13:04,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:13:04,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:13:04,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:13:04,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:13:04,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:13:04,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:13:04,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:13:04,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:13:04,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:13:04,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:13:04,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:13:04,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:13:04,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:13:04,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:13:04,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:13:04,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:13:04,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:13:04,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:13:04,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:13:04,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:13:04,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:13:04,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:13:04,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:13:04,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:13:04,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:13:04,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:13:04,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:13:04,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:13:04,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:13:04,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:13:04,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:13:04,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:13:04,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:13:04,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:13:04,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:13:04,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:13:04,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:13:04,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:13:04,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:13:04,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:13:04,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:13:04,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:13:04,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:13:04,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:13:04,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:13:04,395 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:13:04,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:13:04,395 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:13:04,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:13:04,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:13:04,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:13:04,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:13:04,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:13:04,397 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:13:04,397 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:13:04,397 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:13:04,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:13:04,398 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:13:04,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:13:04,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:13:04,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:13:04,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:13:04,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:13:04,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:13:04,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:13:04,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:13:04,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:13:04,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:13:04,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:13:04,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:13:04,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:13:04,401 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_189aaee4-ee47-4cf1-8d97-687481373e52/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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2019-11-15 21:13:04,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:13:04,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:13:04,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:13:04,444 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:13:04,444 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:13:04,445 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-15 21:13:04,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/b2e45a55c/6d49a8357f1f4419871da7cce7988da6/FLAG59d24c59a [2019-11-15 21:13:04,832 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:13:04,832 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-15 21:13:04,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/b2e45a55c/6d49a8357f1f4419871da7cce7988da6/FLAG59d24c59a [2019-11-15 21:13:05,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/data/b2e45a55c/6d49a8357f1f4419871da7cce7988da6 [2019-11-15 21:13:05,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:13:05,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:13:05,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:05,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:13:05,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:13:05,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d38f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05, skipping insertion in model container [2019-11-15 21:13:05,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,254 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:13:05,270 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:13:05,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:05,436 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:13:05,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:05,465 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:13:05,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05 WrapperNode [2019-11-15 21:13:05,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:05,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:05,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:13:05,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:13:05,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:05,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:13:05,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:13:05,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:13:05,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... [2019-11-15 21:13:05,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:13:05,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:13:05,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:13:05,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:13:05,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/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 21:13:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:13:05,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:13:06,877 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:13:06,877 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 21:13:06,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:06 BoogieIcfgContainer [2019-11-15 21:13:06,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:13:06,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:13:06,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:13:06,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:13:06,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:13:05" (1/3) ... [2019-11-15 21:13:06,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5c35b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:06, skipping insertion in model container [2019-11-15 21:13:06,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:05" (2/3) ... [2019-11-15 21:13:06,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5c35b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:06, skipping insertion in model container [2019-11-15 21:13:06,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:06" (3/3) ... [2019-11-15 21:13:06,885 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-15 21:13:06,894 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:13:06,900 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:13:06,910 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:13:06,939 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:13:06,939 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:13:06,939 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:13:06,939 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:13:06,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:13:06,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:13:06,940 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:13:06,940 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:13:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-15 21:13:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 21:13:06,954 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:06,955 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 21:13:06,956 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:06,960 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-15 21:13:06,967 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:13:06,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825549638] [2019-11-15 21:13:06,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/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 21:13:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:13:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:13:07,176 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 21:13:07,177 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:13:07,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 21:13:07,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:13:07 BoogieIcfgContainer [2019-11-15 21:13:07,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:13:07,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:13:07,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:13:07,394 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:13:07,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:06" (3/4) ... [2019-11-15 21:13:07,396 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:13:07,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_189aaee4-ee47-4cf1-8d97-687481373e52/bin/uautomizer/witness.graphml [2019-11-15 21:13:07,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:13:07,431 INFO L168 Benchmark]: Toolchain (without parser) took 2195.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:07,432 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:07,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.87 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:07,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:07,434 INFO L168 Benchmark]: Boogie Preprocessor took 18.80 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:07,435 INFO L168 Benchmark]: RCFGBuilder took 1304.87 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:07,435 INFO L168 Benchmark]: TraceAbstraction took 513.84 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:07,436 INFO L168 Benchmark]: Witness Printer took 36.26 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 21:13:07,440 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 225.87 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 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 87.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.80 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1304.87 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 513.84 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.26 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: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, 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=8occurred 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, 3 NumberOfCodeBlocks, 3 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 proved your program to be incorrect! Received shutdown request...