./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:57:00,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:57:00,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:57:01,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:57:01,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:57:01,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:57:01,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:57:01,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:57:01,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:57:01,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:57:01,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:57:01,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:57:01,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:57:01,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:57:01,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:57:01,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:57:01,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:57:01,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:57:01,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:57:01,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:57:01,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:57:01,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:57:01,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:57:01,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:57:01,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:57:01,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:57:01,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:57:01,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:57:01,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:57:01,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:57:01,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:57:01,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:57:01,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:57:01,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:57:01,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:57:01,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:57:01,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:57:01,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:57:01,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:57:01,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:57:01,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:57:01,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:57:01,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:57:01,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:57:01,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:57:01,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:57:01,229 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:57:01,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:57:01,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:57:01,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:57:01,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:57:01,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:57:01,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:57:01,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:57:01,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:57:01,233 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:57:01,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:57:01,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:57:01,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:57:01,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:57:01,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:57:01,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:57:01,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:57:01,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:57:01,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:57:01,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:57:01,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:57:01,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:57:01,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:57:01,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:57:01,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:57:01,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-29 18:57:01,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:57:01,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:57:01,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:57:01,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:57:01,614 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:57:01,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-29 18:57:01,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/36c7a225f/bd6246873fd04afdbed34e8a83030212/FLAG052ddfc45 [2020-11-29 18:57:02,250 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:57:02,251 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-29 18:57:02,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/36c7a225f/bd6246873fd04afdbed34e8a83030212/FLAG052ddfc45 [2020-11-29 18:57:02,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/36c7a225f/bd6246873fd04afdbed34e8a83030212 [2020-11-29 18:57:02,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:57:02,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:57:02,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:57:02,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:57:02,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:57:02,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:02" (1/1) ... [2020-11-29 18:57:02,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1349756b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:02, skipping insertion in model container [2020-11-29 18:57:02,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:02" (1/1) ... [2020-11-29 18:57:02,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:57:02,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:57:02,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:57:02,982 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:57:03,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:57:03,056 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:57:03,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03 WrapperNode [2020-11-29 18:57:03,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:57:03,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:57:03,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:57:03,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:57:03,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:57:03,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:57:03,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:57:03,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:57:03,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... [2020-11-29 18:57:03,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:57:03,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:57:03,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:57:03,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:57:03,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/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 [2020-11-29 18:57:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:57:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:57:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:57:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:57:04,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:57:04,035 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-29 18:57:04,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:04 BoogieIcfgContainer [2020-11-29 18:57:04,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:57:04,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:57:04,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:57:04,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:57:04,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:57:02" (1/3) ... [2020-11-29 18:57:04,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3370b727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:04, skipping insertion in model container [2020-11-29 18:57:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:03" (2/3) ... [2020-11-29 18:57:04,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3370b727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:04, skipping insertion in model container [2020-11-29 18:57:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:04" (3/3) ... [2020-11-29 18:57:04,052 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-29 18:57:04,067 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:57:04,072 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 18:57:04,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 18:57:04,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:57:04,113 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:57:04,113 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:57:04,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:57:04,114 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:57:04,114 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:57:04,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:57:04,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:57:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-29 18:57:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 18:57:04,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:04,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:04,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:04,169 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-29 18:57:04,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:04,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107247227] [2020-11-29 18:57:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:04,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107247227] [2020-11-29 18:57:04,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:04,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:57:04,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786510539] [2020-11-29 18:57:04,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:04,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:04,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:04,534 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 7 states. [2020-11-29 18:57:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:05,030 INFO L93 Difference]: Finished difference Result 280 states and 407 transitions. [2020-11-29 18:57:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 18:57:05,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-29 18:57:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:05,045 INFO L225 Difference]: With dead ends: 280 [2020-11-29 18:57:05,045 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 18:57:05,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:57:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 18:57:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2020-11-29 18:57:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 18:57:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-29 18:57:05,107 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2020-11-29 18:57:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:05,108 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-29 18:57:05,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-29 18:57:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:57:05,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:05,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:05,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:57:05,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2020-11-29 18:57:05,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:05,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503521048] [2020-11-29 18:57:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:05,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503521048] [2020-11-29 18:57:05,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:05,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:57:05,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876965130] [2020-11-29 18:57:05,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:05,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:05,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:05,287 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-29 18:57:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:05,675 INFO L93 Difference]: Finished difference Result 214 states and 265 transitions. [2020-11-29 18:57:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:57:05,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 18:57:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:05,683 INFO L225 Difference]: With dead ends: 214 [2020-11-29 18:57:05,683 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 18:57:05,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:57:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 18:57:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-29 18:57:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-29 18:57:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-29 18:57:05,710 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-29 18:57:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:05,711 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-29 18:57:05,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-29 18:57:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:05,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:05,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:05,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:57:05,714 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-29 18:57:05,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:05,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378240653] [2020-11-29 18:57:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:06,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378240653] [2020-11-29 18:57:06,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:06,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-29 18:57:06,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101070503] [2020-11-29 18:57:06,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 18:57:06,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:06,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 18:57:06,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:57:06,031 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 14 states. [2020-11-29 18:57:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:06,601 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2020-11-29 18:57:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:57:06,602 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-11-29 18:57:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:06,604 INFO L225 Difference]: With dead ends: 167 [2020-11-29 18:57:06,604 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 18:57:06,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:57:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 18:57:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2020-11-29 18:57:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-29 18:57:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2020-11-29 18:57:06,632 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2020-11-29 18:57:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:06,633 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2020-11-29 18:57:06,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 18:57:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2020-11-29 18:57:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:06,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:06,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:06,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:57:06,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-29 18:57:06,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:06,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93759914] [2020-11-29 18:57:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:06,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93759914] [2020-11-29 18:57:06,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:06,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:57:06,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741099278] [2020-11-29 18:57:06,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:06,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:06,829 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand 7 states. [2020-11-29 18:57:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:07,019 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2020-11-29 18:57:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:57:07,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 18:57:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:07,022 INFO L225 Difference]: With dead ends: 183 [2020-11-29 18:57:07,022 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 18:57:07,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:57:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 18:57:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2020-11-29 18:57:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 18:57:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-11-29 18:57:07,043 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-11-29 18:57:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:07,043 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-11-29 18:57:07,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-11-29 18:57:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:07,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:07,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:07,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:57:07,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 384893056, now seen corresponding path program 1 times [2020-11-29 18:57:07,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:07,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473967642] [2020-11-29 18:57:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:07,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473967642] [2020-11-29 18:57:07,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:07,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:57:07,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931480822] [2020-11-29 18:57:07,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:07,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:07,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:07,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:07,242 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 7 states. [2020-11-29 18:57:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:07,455 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2020-11-29 18:57:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:57:07,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 18:57:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:07,457 INFO L225 Difference]: With dead ends: 178 [2020-11-29 18:57:07,457 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 18:57:07,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:57:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 18:57:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-11-29 18:57:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 18:57:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-11-29 18:57:07,470 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-11-29 18:57:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:07,471 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-11-29 18:57:07,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-11-29 18:57:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:07,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:07,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:07,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:57:07,477 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:07,478 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-29 18:57:07,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:07,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105245330] [2020-11-29 18:57:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:07,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105245330] [2020-11-29 18:57:07,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:07,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 18:57:07,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302867520] [2020-11-29 18:57:07,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:07,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:07,636 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 6 states. [2020-11-29 18:57:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:07,964 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2020-11-29 18:57:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:57:07,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 18:57:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:07,967 INFO L225 Difference]: With dead ends: 342 [2020-11-29 18:57:07,967 INFO L226 Difference]: Without dead ends: 296 [2020-11-29 18:57:07,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:57:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-11-29 18:57:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2020-11-29 18:57:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 18:57:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2020-11-29 18:57:07,989 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2020-11-29 18:57:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:07,993 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2020-11-29 18:57:07,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2020-11-29 18:57:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:07,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:07,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:07,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:57:07,999 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-11-29 18:57:08,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:08,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238791611] [2020-11-29 18:57:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:57:08,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:57:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:57:08,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:57:08,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:57:08,156 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:57:08,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 18:57:08,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:57:08 BoogieIcfgContainer [2020-11-29 18:57:08,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:57:08,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:57:08,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:57:08,234 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:57:08,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:04" (3/4) ... [2020-11-29 18:57:08,239 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:57:08,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:57:08,241 INFO L168 Benchmark]: Toolchain (without parser) took 5626.96 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 68.1 MB in the beginning and 115.1 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:08,242 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:08,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.23 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 72.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:08,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.54 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 70.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:08,247 INFO L168 Benchmark]: Boogie Preprocessor took 72.26 ms. Allocated memory is still 98.6 MB. Free memory was 70.1 MB in the beginning and 68.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:08,248 INFO L168 Benchmark]: RCFGBuilder took 837.52 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.4 MB in the beginning and 93.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:08,249 INFO L168 Benchmark]: TraceAbstraction took 4194.02 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 92.8 MB in the beginning and 115.1 MB in the end (delta: -22.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:08,250 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 144.7 MB. Free memory is still 115.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:08,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 442.23 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 72.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.54 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 70.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.26 ms. Allocated memory is still 98.6 MB. Free memory was 70.1 MB in the beginning and 68.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 837.52 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.4 MB in the beginning and 93.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4194.02 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 92.8 MB in the beginning and 115.1 MB in the end (delta: -22.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 144.7 MB. Free memory is still 115.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 716 SDtfs, 1334 SDslu, 3546 SDs, 0 SdLazy, 662 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 417 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:57:11,117 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 18:57:11,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:57:11,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:57:11,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:57:11,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:57:11,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:57:11,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:57:11,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:57:11,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:57:11,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:57:11,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:57:11,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:57:11,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 18:57:11,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:57:11,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:57:11,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:57:11,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:57:11,329 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:57:11,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:57:11,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:57:11,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:57:11,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:57:11,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:57:11,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:57:11,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:57:11,332 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 18:57:11,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 18:57:11,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:57:11,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:57:11,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:57:11,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:57:11,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:57:11,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:57:11,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:57:11,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:57:11,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:57:11,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:57:11,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:57:11,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:57:11,336 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 18:57:11,336 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 18:57:11,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:57:11,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:57:11,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 18:57:11,337 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-29 18:57:11,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:57:11,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:57:11,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:57:11,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:57:11,888 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:57:11,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-29 18:57:11,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/3358ac765/674e26069fac44e5aa631940fc0feaf6/FLAGa5b615594 [2020-11-29 18:57:12,707 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:57:12,708 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-29 18:57:12,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/3358ac765/674e26069fac44e5aa631940fc0feaf6/FLAGa5b615594 [2020-11-29 18:57:13,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/data/3358ac765/674e26069fac44e5aa631940fc0feaf6 [2020-11-29 18:57:13,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:57:13,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:57:13,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:57:13,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:57:13,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:57:13,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4416cd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13, skipping insertion in model container [2020-11-29 18:57:13,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:57:13,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:57:13,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:57:13,320 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:57:13,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:57:13,458 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:57:13,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13 WrapperNode [2020-11-29 18:57:13,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:57:13,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:57:13,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:57:13,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:57:13,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:57:13,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:57:13,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:57:13,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:57:13,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... [2020-11-29 18:57:13,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:57:13,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:57:13,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:57:13,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:57:13,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/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 [2020-11-29 18:57:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 18:57:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:57:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:57:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:57:14,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:57:14,733 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-29 18:57:14,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:14 BoogieIcfgContainer [2020-11-29 18:57:14,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:57:14,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:57:14,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:57:14,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:57:14,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:57:13" (1/3) ... [2020-11-29 18:57:14,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648aa4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:14, skipping insertion in model container [2020-11-29 18:57:14,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:13" (2/3) ... [2020-11-29 18:57:14,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648aa4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:14, skipping insertion in model container [2020-11-29 18:57:14,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:14" (3/3) ... [2020-11-29 18:57:14,745 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-29 18:57:14,758 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:57:14,764 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 18:57:14,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 18:57:14,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:57:14,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:57:14,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:57:14,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:57:14,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:57:14,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:57:14,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:57:14,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:57:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-29 18:57:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 18:57:14,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:14,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:14,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:14,844 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-29 18:57:14,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:14,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455870314] [2020-11-29 18:57:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/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 [2020-11-29 18:57:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:15,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:57:15,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:15,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:15,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455870314] [2020-11-29 18:57:15,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:15,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 18:57:15,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263401766] [2020-11-29 18:57:15,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:57:15,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:15,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:57:15,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:57:15,287 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-11-29 18:57:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:15,666 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-11-29 18:57:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:57:15,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 18:57:15,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:15,680 INFO L225 Difference]: With dead ends: 238 [2020-11-29 18:57:15,681 INFO L226 Difference]: Without dead ends: 139 [2020-11-29 18:57:15,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-29 18:57:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-11-29 18:57:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 18:57:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-29 18:57:15,731 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-11-29 18:57:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:15,732 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-29 18:57:15,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:57:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-29 18:57:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:57:15,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:15,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:15,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 18:57:15,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-11-29 18:57:15,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:15,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345446528] [2020-11-29 18:57:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/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 [2020-11-29 18:57:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:16,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:57:16,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:16,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:16,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345446528] [2020-11-29 18:57:16,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:16,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-29 18:57:16,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101864716] [2020-11-29 18:57:16,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:16,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:16,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:16,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:16,198 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-11-29 18:57:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:16,659 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-11-29 18:57:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:57:16,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 18:57:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:16,662 INFO L225 Difference]: With dead ends: 226 [2020-11-29 18:57:16,663 INFO L226 Difference]: Without dead ends: 200 [2020-11-29 18:57:16,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-29 18:57:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-29 18:57:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-11-29 18:57:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 18:57:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-29 18:57:16,705 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-11-29 18:57:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:16,706 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-29 18:57:16,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-29 18:57:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:57:16,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:16,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:16,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 18:57:16,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:16,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-11-29 18:57:16,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:16,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396166362] [2020-11-29 18:57:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/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 [2020-11-29 18:57:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:17,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:57:17,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:17,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:17,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396166362] [2020-11-29 18:57:17,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:17,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-29 18:57:17,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934572622] [2020-11-29 18:57:17,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:17,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:17,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:17,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:17,107 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-29 18:57:17,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:17,630 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-11-29 18:57:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:57:17,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 18:57:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:17,633 INFO L225 Difference]: With dead ends: 214 [2020-11-29 18:57:17,633 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 18:57:17,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:57:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 18:57:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-29 18:57:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-29 18:57:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-29 18:57:17,652 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-29 18:57:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:17,653 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-29 18:57:17,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-29 18:57:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:17,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:17,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:17,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 18:57:17,856 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:17,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-29 18:57:17,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:17,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955727712] [2020-11-29 18:57:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/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 [2020-11-29 18:57:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:17,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:57:17,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:18,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:18,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955727712] [2020-11-29 18:57:18,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:18,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-29 18:57:18,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119872169] [2020-11-29 18:57:18,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:57:18,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:18,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:57:18,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:57:18,065 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-11-29 18:57:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:18,550 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-11-29 18:57:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:57:18,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-29 18:57:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:18,554 INFO L225 Difference]: With dead ends: 183 [2020-11-29 18:57:18,554 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 18:57:18,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:57:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 18:57:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-11-29 18:57:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-29 18:57:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-11-29 18:57:18,579 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-11-29 18:57:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:18,579 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-11-29 18:57:18,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:57:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-11-29 18:57:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:18,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:18,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:18,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 18:57:18,808 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:18,809 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-29 18:57:18,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:18,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651779612] [2020-11-29 18:57:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 18:57:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:18,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:57:18,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:18,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:18,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651779612] [2020-11-29 18:57:18,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:18,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-29 18:57:18,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051120270] [2020-11-29 18:57:18,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:18,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:18,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:18,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:18,985 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-11-29 18:57:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:19,224 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-11-29 18:57:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:57:19,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 18:57:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:19,226 INFO L225 Difference]: With dead ends: 182 [2020-11-29 18:57:19,226 INFO L226 Difference]: Without dead ends: 149 [2020-11-29 18:57:19,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:57:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-29 18:57:19,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-11-29 18:57:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 18:57:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-11-29 18:57:19,250 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-11-29 18:57:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:19,251 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-11-29 18:57:19,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-11-29 18:57:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:57:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:19,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:19,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 18:57:19,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:19,475 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-29 18:57:19,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:19,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103284216] [2020-11-29 18:57:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 18:57:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:19,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:57:19,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:19,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:19,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103284216] [2020-11-29 18:57:19,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:19,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-29 18:57:19,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062952863] [2020-11-29 18:57:19,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:57:19,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:57:19,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:57:19,658 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-11-29 18:57:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:20,701 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-11-29 18:57:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 18:57:20,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-29 18:57:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:20,706 INFO L225 Difference]: With dead ends: 369 [2020-11-29 18:57:20,706 INFO L226 Difference]: Without dead ends: 323 [2020-11-29 18:57:20,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-11-29 18:57:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-29 18:57:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-11-29 18:57:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-29 18:57:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-11-29 18:57:20,722 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-11-29 18:57:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:20,722 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-11-29 18:57:20,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:57:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-11-29 18:57:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:57:20,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:20,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:20,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 18:57:20,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-11-29 18:57:20,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:20,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432697753] [2020-11-29 18:57:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 18:57:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:21,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:57:21,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:21,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:21,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432697753] [2020-11-29 18:57:21,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:21,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-29 18:57:21,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816490800] [2020-11-29 18:57:21,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:57:21,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:21,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:57:21,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:57:21,169 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-11-29 18:57:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:21,683 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-11-29 18:57:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 18:57:21,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-29 18:57:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:21,685 INFO L225 Difference]: With dead ends: 179 [2020-11-29 18:57:21,686 INFO L226 Difference]: Without dead ends: 174 [2020-11-29 18:57:21,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-11-29 18:57:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-29 18:57:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-11-29 18:57:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 18:57:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-11-29 18:57:21,708 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-11-29 18:57:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:21,709 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-11-29 18:57:21,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:57:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-11-29 18:57:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:57:21,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:21,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:21,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 18:57:21,931 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:21,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-11-29 18:57:21,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:21,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515421705] [2020-11-29 18:57:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 18:57:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:22,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 18:57:22,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:22,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:57:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:22,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515421705] [2020-11-29 18:57:22,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:22,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-29 18:57:22,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987692290] [2020-11-29 18:57:22,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:22,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:57:22,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:22,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:22,086 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-11-29 18:57:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:22,300 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-11-29 18:57:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:57:22,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-29 18:57:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:22,302 INFO L225 Difference]: With dead ends: 159 [2020-11-29 18:57:22,302 INFO L226 Difference]: Without dead ends: 140 [2020-11-29 18:57:22,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:57:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-29 18:57:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-11-29 18:57:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-29 18:57:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-11-29 18:57:22,330 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-11-29 18:57:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:22,330 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-11-29 18:57:22,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-11-29 18:57:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:57:22,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:22,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:22,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 18:57:22,544 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:57:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-11-29 18:57:22,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:57:22,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299388834] [2020-11-29 18:57:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-29 18:57:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:57:22,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:57:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:57:22,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:57:22,734 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 18:57:22,735 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:57:22,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 18:57:22,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:57:22 BoogieIcfgContainer [2020-11-29 18:57:23,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:57:23,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:57:23,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:57:23,001 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:57:23,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:14" (3/4) ... [2020-11-29 18:57:23,004 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:57:23,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48aeeb4d-009b-402c-9d8d-1344864e6004/bin/uautomizer/witness.graphml [2020-11-29 18:57:23,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:57:23,115 INFO L168 Benchmark]: Toolchain (without parser) took 10089.33 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 26.9 MB in the beginning and 73.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,118 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.5 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:23,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.29 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.7 MB in the beginning and 43.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 41.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,120 INFO L168 Benchmark]: Boogie Preprocessor took 49.48 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 39.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,121 INFO L168 Benchmark]: RCFGBuilder took 1131.81 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 41.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,121 INFO L168 Benchmark]: TraceAbstraction took 8262.42 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 40.5 MB in the beginning and 76.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,122 INFO L168 Benchmark]: Witness Printer took 112.71 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 73.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:23,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.5 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.29 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.7 MB in the beginning and 43.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 41.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.48 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 39.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1131.81 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 41.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8262.42 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 40.5 MB in the beginning and 76.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 112.71 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 73.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13170 SizeOfPredicates, 45 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...