/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 SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:34:05,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:34:05,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:34:05,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:34:05,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:34:05,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:34:05,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:34:05,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:34:05,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:34:05,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:34:05,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:34:05,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:34:05,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:34:05,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:34:05,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:34:05,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:34:05,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:34:05,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:34:05,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:34:05,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:34:05,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:34:05,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:34:05,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:34:05,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:34:05,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:34:05,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:34:05,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:34:05,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:34:05,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:34:05,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:34:05,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:34:05,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:34:05,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:34:05,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:34:05,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:34:05,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:34:05,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:34:05,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:34:05,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:34:05,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:34:05,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:34:05,301 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 [2020-10-12 10:34:05,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:34:05,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:34:05,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:34:05,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:34:05,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:34:05,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:34:05,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:34:05,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:34:05,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:34:05,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:34:05,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:34:05,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:34:05,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:34:05,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:34:05,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:34:05,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:34:05,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:34:05,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:34:05,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:34:05,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:34:05,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:34:05,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:34:05,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:34:05,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:34:05,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:34:05,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:34:05,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:34:05,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:34:05,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:34:05,353 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 -> SequenceOfStatements 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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:34:05,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:34:05,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:34:05,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:34:05,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:34:05,664 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:34:05,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-12 10:34:05,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55867826/bc72e2c17d4d4499a721d27945c9d1d5/FLAGd93325038 [2020-10-12 10:34:06,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:34:06,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-12 10:34:06,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55867826/bc72e2c17d4d4499a721d27945c9d1d5/FLAGd93325038 [2020-10-12 10:34:06,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55867826/bc72e2c17d4d4499a721d27945c9d1d5 [2020-10-12 10:34:06,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:34:06,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:34:06,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:34:06,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:34:06,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:34:06,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:34:06" (1/1) ... [2020-10-12 10:34:06,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75706c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:06, skipping insertion in model container [2020-10-12 10:34:06,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:34:06" (1/1) ... [2020-10-12 10:34:06,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:34:06,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:34:06,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:34:06,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:34:06,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:34:07,018 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:34:07,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07 WrapperNode [2020-10-12 10:34:07,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:34:07,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:34:07,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:34:07,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:34:07,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (1/1) ... [2020-10-12 10:34:07,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:34:07,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:34:07,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:34:07,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:34:07,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (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 [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-12 10:34:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:34:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-12 10:34:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-12 10:34:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:34:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:34:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:34:07,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:34:07,626 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:34:07,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:34:07 BoogieIcfgContainer [2020-10-12 10:34:07,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:34:07,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:34:07,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:34:07,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:34:07,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:34:06" (1/3) ... [2020-10-12 10:34:07,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2830ec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:34:07, skipping insertion in model container [2020-10-12 10:34:07,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:07" (2/3) ... [2020-10-12 10:34:07,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2830ec69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:34:07, skipping insertion in model container [2020-10-12 10:34:07,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:34:07" (3/3) ... [2020-10-12 10:34:07,640 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-10-12 10:34:07,648 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:34:07,656 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:34:07,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:34:07,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:34:07,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:34:07,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:34:07,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:34:07,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:34:07,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:34:07,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:34:07,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:34:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-12 10:34:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:34:07,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:07,722 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:34:07,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:07,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1905040847, now seen corresponding path program 1 times [2020-10-12 10:34:07,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:07,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995646276] [2020-10-12 10:34:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:09,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:09,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:34:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:34:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-12 10:34:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:34:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:34:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:34:09,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:09,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:09,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:09,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:09,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:34:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:09,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:09,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:09,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:34:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:34:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:09,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:09,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:09,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:09,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 10:34:09,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:34:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:09,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:09,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:09,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:09,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:34:09,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:34:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:34:09,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995646276] [2020-10-12 10:34:09,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:09,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:34:09,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431444406] [2020-10-12 10:34:09,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:09,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:10,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:10,019 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 9 states. [2020-10-12 10:34:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:10,352 INFO L93 Difference]: Finished difference Result 146 states and 222 transitions. [2020-10-12 10:34:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:34:10,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-12 10:34:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:10,380 INFO L225 Difference]: With dead ends: 146 [2020-10-12 10:34:10,380 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 10:34:10,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:34:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 10:34:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2020-10-12 10:34:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 10:34:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2020-10-12 10:34:10,515 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 34 [2020-10-12 10:34:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:10,517 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2020-10-12 10:34:10,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2020-10-12 10:34:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:34:10,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:10,522 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:34:10,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:34:10,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:10,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1962299149, now seen corresponding path program 1 times [2020-10-12 10:34:10,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:10,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690032893] [2020-10-12 10:34:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:34:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:34:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-12 10:34:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:34:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:34:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:11,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:11,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:11,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:11,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:11,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:34:11,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:11,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:11,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:11,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:11,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:11,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:34:11,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:34:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:11,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:11,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:11,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:34:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:34:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:34:11,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690032893] [2020-10-12 10:34:11,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:11,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:34:11,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106583058] [2020-10-12 10:34:11,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:11,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:11,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:11,396 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand 9 states. [2020-10-12 10:34:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:11,555 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2020-10-12 10:34:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:34:11,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-12 10:34:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:11,558 INFO L225 Difference]: With dead ends: 120 [2020-10-12 10:34:11,559 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 10:34:11,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:34:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 10:34:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-12 10:34:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 10:34:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2020-10-12 10:34:11,573 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 34 [2020-10-12 10:34:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:11,574 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2020-10-12 10:34:11,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2020-10-12 10:34:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 10:34:11,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:11,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:34:11,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:34:11,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:11,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1544464126, now seen corresponding path program 1 times [2020-10-12 10:34:11,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:11,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608412986] [2020-10-12 10:34:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 10:34:12,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:34:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-12 10:34:12,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:34:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 10:34:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:34:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 10:34:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:12,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:12,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:12,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:12,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:12,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:34:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:12,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 10:34:12,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 10:34:12,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:34:12,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:34:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:12,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:34:12,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:34:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:34:12,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608412986] [2020-10-12 10:34:12,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:12,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:34:12,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828162469] [2020-10-12 10:34:12,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:34:12,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:12,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:34:12,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:34:12,893 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 8 states. [2020-10-12 10:34:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:13,031 INFO L93 Difference]: Finished difference Result 123 states and 170 transitions. [2020-10-12 10:34:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:34:13,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-12 10:34:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:13,034 INFO L225 Difference]: With dead ends: 123 [2020-10-12 10:34:13,034 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:34:13,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:34:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:34:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2020-10-12 10:34:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 10:34:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2020-10-12 10:34:13,050 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 38 [2020-10-12 10:34:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:13,050 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2020-10-12 10:34:13,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:34:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2020-10-12 10:34:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 10:34:13,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:13,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:34:13,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:34:13,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1601722428, now seen corresponding path program 1 times [2020-10-12 10:34:13,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:13,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687475696] [2020-10-12 10:34:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:13,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 10:34:13,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 10:34:13,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:34:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 10:34:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 10:34:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:13,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:13,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:13,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:34:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:13,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 10:34:13,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:13,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:34:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:13,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:34:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:13,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:13,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:13,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:34:13,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:34:13,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687475696] [2020-10-12 10:34:13,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:13,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 10:34:13,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984615813] [2020-10-12 10:34:13,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:34:13,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:34:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:34:13,306 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand 8 states. [2020-10-12 10:34:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:13,393 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2020-10-12 10:34:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:34:13,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-12 10:34:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:13,396 INFO L225 Difference]: With dead ends: 163 [2020-10-12 10:34:13,396 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 10:34:13,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:34:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 10:34:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-10-12 10:34:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 10:34:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2020-10-12 10:34:13,411 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 38 [2020-10-12 10:34:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:13,411 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2020-10-12 10:34:13,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:34:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2020-10-12 10:34:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:34:13,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:13,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-12 10:34:13,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:34:13,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:13,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1924883715, now seen corresponding path program 1 times [2020-10-12 10:34:13,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:13,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079682246] [2020-10-12 10:34:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:16,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:16,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 10:34:16,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:34:16,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3233 [2020-10-12 10:34:16,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 10:34:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:34:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:16,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:16,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:16,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:16,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:16,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:16,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:16,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:16,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:16,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:34:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:16,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:16,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:34:16,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:34:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:16,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 10:34:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:34:16,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:34:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:34:16,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079682246] [2020-10-12 10:34:16,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:16,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 10:34:16,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666145064] [2020-10-12 10:34:16,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:16,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:16,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:16,818 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand 9 states. [2020-10-12 10:34:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:16,983 INFO L93 Difference]: Finished difference Result 145 states and 195 transitions. [2020-10-12 10:34:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:34:16,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-12 10:34:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:16,986 INFO L225 Difference]: With dead ends: 145 [2020-10-12 10:34:16,986 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 10:34:16,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:34:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 10:34:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2020-10-12 10:34:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 10:34:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 155 transitions. [2020-10-12 10:34:17,002 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 155 transitions. Word has length 42 [2020-10-12 10:34:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:17,002 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 155 transitions. [2020-10-12 10:34:17,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 155 transitions. [2020-10-12 10:34:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:34:17,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:17,006 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:34:17,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:34:17,007 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1982142017, now seen corresponding path program 1 times [2020-10-12 10:34:17,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:17,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938459360] [2020-10-12 10:34:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:19,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 10:34:19,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:34:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-12 10:34:19,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 10:34:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:34:19,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:19,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:34:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:34:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:19,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:19,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:19,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:34:19,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:19,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:19,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:19,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:34:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:19,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 10:34:19,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:19,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:34:19,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:19,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:34:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:34:19,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938459360] [2020-10-12 10:34:19,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:19,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 10:34:19,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078697474] [2020-10-12 10:34:19,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:19,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:19,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:19,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:19,732 INFO L87 Difference]: Start difference. First operand 114 states and 155 transitions. Second operand 9 states. [2020-10-12 10:34:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:19,880 INFO L93 Difference]: Finished difference Result 142 states and 187 transitions. [2020-10-12 10:34:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:34:19,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-12 10:34:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:19,883 INFO L225 Difference]: With dead ends: 142 [2020-10-12 10:34:19,883 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 10:34:19,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:34:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 10:34:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2020-10-12 10:34:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-12 10:34:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 139 transitions. [2020-10-12 10:34:19,895 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 139 transitions. Word has length 42 [2020-10-12 10:34:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:19,896 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 139 transitions. [2020-10-12 10:34:19,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 139 transitions. [2020-10-12 10:34:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:34:19,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:19,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:34:19,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:34:19,898 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:19,899 INFO L82 PathProgramCache]: Analyzing trace with hash 17099885, now seen corresponding path program 2 times [2020-10-12 10:34:19,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:19,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973671310] [2020-10-12 10:34:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:20,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:34:20,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 10:34:20,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:34:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 10:34:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 10:34:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:20,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:20,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 10:34:20,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:20,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 10:34:20,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:20,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 10:34:20,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:20,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:34:20,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:34:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 10:34:20,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 10:34:20,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:34:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 10:34:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 10:34:20,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973671310] [2020-10-12 10:34:20,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:20,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 10:34:20,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375213093] [2020-10-12 10:34:20,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:34:20,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:20,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:34:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:34:20,487 INFO L87 Difference]: Start difference. First operand 104 states and 139 transitions. Second operand 13 states. [2020-10-12 10:34:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:20,854 INFO L93 Difference]: Finished difference Result 189 states and 253 transitions. [2020-10-12 10:34:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:34:20,855 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-12 10:34:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:20,857 INFO L225 Difference]: With dead ends: 189 [2020-10-12 10:34:20,859 INFO L226 Difference]: Without dead ends: 158 [2020-10-12 10:34:20,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:34:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-12 10:34:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-10-12 10:34:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 10:34:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-10-12 10:34:20,887 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 42 [2020-10-12 10:34:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:20,888 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-10-12 10:34:20,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:34:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-10-12 10:34:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:34:20,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:20,891 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:34:20,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:34:20,891 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1540531889, now seen corresponding path program 1 times [2020-10-12 10:34:20,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:20,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620520832] [2020-10-12 10:34:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:34:20,914 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:34:20,915 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:34:20,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:34:20,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:34:20 BoogieIcfgContainer [2020-10-12 10:34:20,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:34:20,958 INFO L168 Benchmark]: Toolchain (without parser) took 14340.64 ms. Allocated memory was 139.5 MB in the beginning and 413.1 MB in the end (delta: 273.7 MB). Free memory was 101.8 MB in the beginning and 97.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 277.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:20,963 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:34:20,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.22 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 182.1 MB in the end (delta: -80.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:20,966 INFO L168 Benchmark]: Boogie Preprocessor took 45.61 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 179.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:20,966 INFO L168 Benchmark]: RCFGBuilder took 565.68 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 154.3 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:20,970 INFO L168 Benchmark]: TraceAbstraction took 13321.36 ms. Allocated memory was 203.4 MB in the beginning and 413.1 MB in the end (delta: 209.7 MB). Free memory was 153.7 MB in the beginning and 97.8 MB in the end (delta: 55.8 MB). Peak memory consumption was 265.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:20,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.22 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 182.1 MB in the end (delta: -80.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.61 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 179.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 565.68 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 154.3 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13321.36 ms. Allocated memory was 203.4 MB in the beginning and 413.1 MB in the end (delta: 209.7 MB). Free memory was 153.7 MB in the beginning and 97.8 MB in the end (delta: 55.8 MB). Peak memory consumption was 265.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 101, overapproximation of bitwiseAnd at line 99. Possible FailurePath: [L217] unsigned int a ; [L218] unsigned int ma = __VERIFIER_nondet_uint(); [L219] signed char ea = __VERIFIER_nondet_char(); [L220] unsigned int b ; [L221] unsigned int mb = __VERIFIER_nondet_uint(); [L222] signed char eb = __VERIFIER_nondet_char(); [L223] unsigned int r_add1 ; [L224] unsigned int r_add2 ; [L225] unsigned int zero ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int __retres14 ; [L232] CALL, EXPR base2flt(0, 0) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND TRUE ! m [L21] __retres4 = 0U [L71] return (__retres4); [L232] RET, EXPR base2flt(0, 0) [L232] zero = base2flt(0, 0) [L233] CALL, EXPR base2flt(ma, ea) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND TRUE m >= 1U << 25U [L55] COND TRUE e >= 127 [L56] __retres4 = 4294967295U [L71] return (__retres4); [L233] RET, EXPR base2flt(ma, ea) [L233] a = base2flt(ma, ea) [L234] CALL, EXPR base2flt(mb, eb) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND FALSE !(m >= 1U << 25U) [L67] m = m & ~ (1U << 24U) [L68] res = m | ((unsigned int )(e + 128) << 24U) [L69] __retres4 = res [L71] return (__retres4); [L234] RET, EXPR base2flt(mb, eb) [L234] b = base2flt(mb, eb) [L235] CALL addflt(a, b) [L75] unsigned int res ; [L76] unsigned int ma ; [L77] unsigned int mb ; [L78] unsigned int delta ; [L79] int ea ; [L80] int eb ; [L81] unsigned int tmp ; [L82] unsigned int __retres10 ; [L85] COND FALSE !(a < b) [L92] COND FALSE !(! b) [L99] ma = a & ((1U << 24U) - 1U) [L100] ea = (int )(a >> 24U) - 128 [L101] ma = ma | (1U << 24U) [L102] mb = b & ((1U << 24U) - 1U) [L103] eb = (int )(b >> 24U) - 128 [L104] mb = mb | (1U << 24U) [L105] CALL __VERIFIER_assert(ea >= eb) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 559 SDtfs, 250 SDslu, 3901 SDs, 0 SdLazy, 620 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 93 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 21460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 106/115 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...