/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:01:19,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:01:19,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:01:20,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:01:20,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:01:20,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:01:20,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:01:20,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:01:20,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:01:20,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:01:20,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:01:20,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:01:20,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:01:20,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:01:20,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:01:20,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:01:20,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:01:20,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:01:20,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:01:20,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:01:20,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:01:20,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:01:20,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:01:20,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:01:20,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:01:20,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:01:20,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:01:20,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:01:20,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:01:20,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:01:20,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:01:20,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:01:20,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:01:20,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:01:20,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:01:20,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:01:20,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:01:20,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:01:20,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:01:20,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:01:20,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:01:20,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:01:20,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:01:20,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:01:20,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:01:20,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:01:20,138 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:01:20,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:01:20,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:01:20,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:01:20,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:01:20,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:01:20,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:01:20,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:01:20,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:01:20,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:01:20,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:01:20,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:01:20,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:01:20,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:01:20,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:01:20,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:01:20,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:01:20,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:01:20,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:01:20,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:01:20,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:01:20,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:01:20,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:01:20,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:01:20,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:01:20,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:01:20,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:01:20,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:01:20,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:01:20,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:01:20,713 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:01:20,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-24 17:01:20,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b547a9db/8914403acfbe4b3288c06ced2d351272/FLAGce3d7ae86 [2020-09-24 17:01:21,352 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:01:21,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-24 17:01:21,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b547a9db/8914403acfbe4b3288c06ced2d351272/FLAGce3d7ae86 [2020-09-24 17:01:21,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b547a9db/8914403acfbe4b3288c06ced2d351272 [2020-09-24 17:01:21,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:01:21,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:01:21,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:21,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:01:21,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:01:21,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:21" (1/1) ... [2020-09-24 17:01:21,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c46e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:21, skipping insertion in model container [2020-09-24 17:01:21,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:21" (1/1) ... [2020-09-24 17:01:21,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:01:21,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:01:22,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:22,087 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:01:22,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:22,236 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:01:22,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22 WrapperNode [2020-09-24 17:01:22,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:22,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:01:22,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:01:22,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:01:22,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... [2020-09-24 17:01:22,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:01:22,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:01:22,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:01:22,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:01:22,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:01:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:01:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:01:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:01:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-24 17:01:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-24 17:01:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-24 17:01:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:01:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:01:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:01:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:01:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:01:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-24 17:01:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-24 17:01:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-24 17:01:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:01:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:01:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:01:22,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:01:22,948 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 17:01:22,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:22 BoogieIcfgContainer [2020-09-24 17:01:22,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:01:22,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:01:22,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:01:22,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:01:22,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:01:21" (1/3) ... [2020-09-24 17:01:22,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d0ea18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:22, skipping insertion in model container [2020-09-24 17:01:22,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:22" (2/3) ... [2020-09-24 17:01:22,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d0ea18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:22, skipping insertion in model container [2020-09-24 17:01:22,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:22" (3/3) ... [2020-09-24 17:01:22,966 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-24 17:01:22,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:01:22,991 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:01:23,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:01:23,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:01:23,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:01:23,053 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:01:23,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:01:23,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:01:23,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:01:23,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:01:23,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:01:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-24 17:01:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 17:01:23,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:23,098 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:23,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:23,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-24 17:01:23,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:23,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563295066] [2020-09-24 17:01:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:26,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:26,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 17:01:26,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:01:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2658 [2020-09-24 17:01:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:01:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 17:01:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:01:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:01:26,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:26,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:26,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:01:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:26,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:01:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:26,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:01:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:01:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 17:01:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:26,268 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:26,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:26,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:01:26,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:01:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:01:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-24 17:01:26,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563295066] [2020-09-24 17:01:26,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:26,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:01:26,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379791100] [2020-09-24 17:01:26,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:01:26,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:26,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:01:26,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:01:26,322 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 9 states. [2020-09-24 17:01:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:26,649 INFO L93 Difference]: Finished difference Result 298 states and 378 transitions. [2020-09-24 17:01:26,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:01:26,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-09-24 17:01:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:26,670 INFO L225 Difference]: With dead ends: 298 [2020-09-24 17:01:26,671 INFO L226 Difference]: Without dead ends: 189 [2020-09-24 17:01:26,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:01:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-24 17:01:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2020-09-24 17:01:26,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 17:01:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-09-24 17:01:26,785 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 81 [2020-09-24 17:01:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:26,786 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-09-24 17:01:26,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:01:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-09-24 17:01:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 17:01:26,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:26,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:26,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:01:26,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:26,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1623188401, now seen corresponding path program 1 times [2020-09-24 17:01:26,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:26,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419003417] [2020-09-24 17:01:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:29,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:01:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:01:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2321 [2020-09-24 17:01:29,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:01:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 17:01:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 17:01:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:29,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:29,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:01:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:29,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:29,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:01:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:01:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:01:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 17:01:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:29,663 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:29,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:01:29,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:01:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:01:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-24 17:01:29,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419003417] [2020-09-24 17:01:29,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:29,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 17:01:29,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052649789] [2020-09-24 17:01:29,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:01:29,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:29,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:01:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:01:29,776 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 17 states. [2020-09-24 17:01:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:30,324 INFO L93 Difference]: Finished difference Result 315 states and 370 transitions. [2020-09-24 17:01:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:01:30,327 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-09-24 17:01:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:30,335 INFO L225 Difference]: With dead ends: 315 [2020-09-24 17:01:30,336 INFO L226 Difference]: Without dead ends: 226 [2020-09-24 17:01:30,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-09-24 17:01:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-24 17:01:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 205. [2020-09-24 17:01:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 17:01:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-09-24 17:01:30,390 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 84 [2020-09-24 17:01:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:30,390 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-09-24 17:01:30,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:01:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-09-24 17:01:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 17:01:30,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:30,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:30,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:01:30,394 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:30,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:30,395 INFO L82 PathProgramCache]: Analyzing trace with hash 646909882, now seen corresponding path program 1 times [2020-09-24 17:01:30,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:30,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000583856] [2020-09-24 17:01:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:31,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:31,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 17:01:31,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:01:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-24 17:01:31,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 17:01:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:01:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 17:01:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:31,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:31,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:31,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:01:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:31,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:31,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:01:31,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:01:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:31,353 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:31,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 17:01:31,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:01:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 17:01:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:31,369 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:31,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:01:31,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:01:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 17:01:31,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000583856] [2020-09-24 17:01:31,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:31,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:01:31,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61694642] [2020-09-24 17:01:31,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:01:31,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:01:31,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:01:31,406 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 8 states. [2020-09-24 17:01:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:31,522 INFO L93 Difference]: Finished difference Result 295 states and 340 transitions. [2020-09-24 17:01:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:01:31,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-09-24 17:01:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:31,526 INFO L225 Difference]: With dead ends: 295 [2020-09-24 17:01:31,526 INFO L226 Difference]: Without dead ends: 236 [2020-09-24 17:01:31,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:01:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-24 17:01:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 224. [2020-09-24 17:01:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-24 17:01:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-09-24 17:01:31,543 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 85 [2020-09-24 17:01:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:31,544 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-09-24 17:01:31,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:01:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-09-24 17:01:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 17:01:31,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:31,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:31,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:01:31,546 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash 808883757, now seen corresponding path program 1 times [2020-09-24 17:01:31,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:31,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583959122] [2020-09-24 17:01:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:32,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 17:01:32,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:01:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-09-24 17:01:32,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:01:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 17:01:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:32,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:32,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:32,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:01:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:32,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:32,981 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:32,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:01:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:33,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:33,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:33,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 17:01:33,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:33,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:01:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:01:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 17:01:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:33,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:33,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 17:01:33,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:01:33,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:01:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:01:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 17:01:33,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583959122] [2020-09-24 17:01:33,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:33,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:01:33,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368973499] [2020-09-24 17:01:33,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:01:33,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:01:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:01:33,081 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 10 states. [2020-09-24 17:01:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:33,300 INFO L93 Difference]: Finished difference Result 302 states and 344 transitions. [2020-09-24 17:01:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:01:33,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-24 17:01:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:33,304 INFO L225 Difference]: With dead ends: 302 [2020-09-24 17:01:33,305 INFO L226 Difference]: Without dead ends: 218 [2020-09-24 17:01:33,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:01:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-24 17:01:33,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 201. [2020-09-24 17:01:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-24 17:01:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 224 transitions. [2020-09-24 17:01:33,325 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 224 transitions. Word has length 88 [2020-09-24 17:01:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:33,326 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 224 transitions. [2020-09-24 17:01:33,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:01:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 224 transitions. [2020-09-24 17:01:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 17:01:33,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:33,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:33,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:01:33,337 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:33,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 2 times [2020-09-24 17:01:33,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:33,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454487145] [2020-09-24 17:01:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:34,006 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 17:01:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-24 17:01:34,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:01:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 17:01:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 17:01:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:34,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:34,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:34,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:34,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:34,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:01:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:34,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:01:34,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:34,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:34,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:01:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:34,519 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:34,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 17:01:34,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:01:34,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:01:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 17:01:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:34,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:34,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 17:01:34,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 17:01:34,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:01:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:01:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 17:01:34,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454487145] [2020-09-24 17:01:34,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:34,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 17:01:34,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116103701] [2020-09-24 17:01:34,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:01:34,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:01:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:01:34,682 INFO L87 Difference]: Start difference. First operand 201 states and 224 transitions. Second operand 15 states. [2020-09-24 17:01:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:35,229 INFO L93 Difference]: Finished difference Result 340 states and 396 transitions. [2020-09-24 17:01:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:01:35,230 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-24 17:01:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:35,235 INFO L225 Difference]: With dead ends: 340 [2020-09-24 17:01:35,236 INFO L226 Difference]: Without dead ends: 281 [2020-09-24 17:01:35,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:01:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-24 17:01:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 254. [2020-09-24 17:01:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-24 17:01:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 289 transitions. [2020-09-24 17:01:35,265 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 289 transitions. Word has length 89 [2020-09-24 17:01:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:35,267 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 289 transitions. [2020-09-24 17:01:35,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:01:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 289 transitions. [2020-09-24 17:01:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 17:01:35,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:35,270 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:35,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:01:35,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-24 17:01:35,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:35,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512542142] [2020-09-24 17:01:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:01:35,297 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:01:35,297 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:01:35,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:01:35,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:01:35 BoogieIcfgContainer [2020-09-24 17:01:35,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:01:35,349 INFO L168 Benchmark]: Toolchain (without parser) took 13695.85 ms. Allocated memory was 140.0 MB in the beginning and 339.2 MB in the end (delta: 199.2 MB). Free memory was 103.1 MB in the beginning and 142.3 MB in the end (delta: -39.2 MB). Peak memory consumption was 160.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:35,351 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:01:35,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.95 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 181.3 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:35,358 INFO L168 Benchmark]: Boogie Preprocessor took 59.23 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:35,359 INFO L168 Benchmark]: RCFGBuilder took 652.39 ms. Allocated memory is still 202.9 MB. Free memory was 179.0 MB in the beginning and 147.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:35,360 INFO L168 Benchmark]: TraceAbstraction took 12387.69 ms. Allocated memory was 202.9 MB in the beginning and 339.2 MB in the end (delta: 136.3 MB). Free memory was 147.2 MB in the beginning and 142.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 141.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:01:35,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 586.95 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 181.3 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.23 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 652.39 ms. Allocated memory is still 202.9 MB. Free memory was 179.0 MB in the beginning and 147.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12387.69 ms. Allocated memory was 202.9 MB in the beginning and 339.2 MB in the end (delta: 136.3 MB). Free memory was 147.2 MB in the beginning and 142.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 141.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 720 SDtfs, 409 SDslu, 6678 SDs, 0 SdLazy, 744 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 99 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 99062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 127/133 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...