/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:58:24,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:58:24,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:58:24,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:58:24,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:58:24,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:58:24,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:58:24,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:58:24,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:58:24,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:58:24,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:58:24,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:58:24,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:58:24,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:58:24,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:58:24,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:58:24,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:58:24,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:58:24,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:58:24,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:58:24,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:58:24,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:58:24,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:58:24,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:58:24,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:58:24,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:58:24,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:58:24,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:58:24,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:58:24,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:58:24,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:58:24,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:58:24,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:58:24,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:58:24,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:58:24,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:58:24,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:58:24,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:58:24,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:58:24,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:58:24,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:58:24,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:58:24,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:58:24,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:58:24,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:58:24,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:58:24,270 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:58:24,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:58:24,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:58:24,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:58:24,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:58:24,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:58:24,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:58:24,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:58:24,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:58:24,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:58:24,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:58:24,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:58:24,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:58:24,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:58:24,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:58:24,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:58:24,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:58:24,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:24,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:58:24,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:58:24,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:58:24,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:58:24,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:58:24,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:58:24,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:58:24,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 09:58:24,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:58:24,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:58:24,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:58:24,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:58:24,806 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:58:24,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 09:58:24,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bc6d2c6/c3551ea03df34f00bee08e47833594f7/FLAGca9d0fc58 [2020-09-25 09:58:25,489 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:58:25,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 09:58:25,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bc6d2c6/c3551ea03df34f00bee08e47833594f7/FLAGca9d0fc58 [2020-09-25 09:58:25,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bc6d2c6/c3551ea03df34f00bee08e47833594f7 [2020-09-25 09:58:25,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:58:25,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:58:25,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:25,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:58:25,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:58:25,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:25" (1/1) ... [2020-09-25 09:58:25,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeaf6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:25, skipping insertion in model container [2020-09-25 09:58:25,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:25" (1/1) ... [2020-09-25 09:58:25,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:58:25,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:58:26,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:26,171 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:58:26,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:26,327 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:58:26,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26 WrapperNode [2020-09-25 09:58:26,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:26,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:58:26,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:58:26,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:58:26,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:58:26,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:58:26,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:58:26,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:58:26,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:26,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:58:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:58:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:58:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 09:58:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 09:58:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 09:58:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:58:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:58:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 09:58:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 09:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 09:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 09:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 09:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:58:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:58:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:58:27,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:58:27,037 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 09:58:27,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:27 BoogieIcfgContainer [2020-09-25 09:58:27,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:58:27,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:58:27,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:58:27,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:58:27,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:58:25" (1/3) ... [2020-09-25 09:58:27,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91eb97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:27, skipping insertion in model container [2020-09-25 09:58:27,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (2/3) ... [2020-09-25 09:58:27,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91eb97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:27, skipping insertion in model container [2020-09-25 09:58:27,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:27" (3/3) ... [2020-09-25 09:58:27,054 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-25 09:58:27,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:58:27,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:58:27,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:58:27,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:58:27,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:58:27,129 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:58:27,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:58:27,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:58:27,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:58:27,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:58:27,130 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:58:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-25 09:58:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 09:58:27,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:27,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:27,169 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:27,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:27,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-25 09:58:27,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:27,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164801778] [2020-09-25 09:58:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:30,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 09:58:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:58:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2693 [2020-09-25 09:58:30,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:30,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:58:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:58:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:58:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:58:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:30,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:30,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:30,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:58:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:30,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:30,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:30,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:58:30,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:30,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:58:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:30,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:58:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:30,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 09:58:30,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164801778] [2020-09-25 09:58:30,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:30,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 09:58:30,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946752527] [2020-09-25 09:58:30,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:58:30,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:30,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:58:30,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:58:30,716 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 15 states. [2020-09-25 09:58:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:31,186 INFO L93 Difference]: Finished difference Result 281 states and 357 transitions. [2020-09-25 09:58:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:58:31,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-09-25 09:58:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:31,206 INFO L225 Difference]: With dead ends: 281 [2020-09-25 09:58:31,207 INFO L226 Difference]: Without dead ends: 168 [2020-09-25 09:58:31,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:58:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-25 09:58:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2020-09-25 09:58:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 09:58:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2020-09-25 09:58:31,293 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 81 [2020-09-25 09:58:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:31,294 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2020-09-25 09:58:31,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:58:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2020-09-25 09:58:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 09:58:31,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:31,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:31,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:58:31,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:31,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1823732666, now seen corresponding path program 1 times [2020-09-25 09:58:31,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:31,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932248118] [2020-09-25 09:58:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:32,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 09:58:32,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-09-25 09:58:32,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:32,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:58:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:58:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:58:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:32,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:32,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:32,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:32,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:32,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:32,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:32,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:32,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:32,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:32,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:58:32,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:32,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:58:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:32,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 09:58:32,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:58:32,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:32,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:58:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 09:58:32,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932248118] [2020-09-25 09:58:32,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:32,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:58:32,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132641819] [2020-09-25 09:58:32,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:58:32,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:32,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:58:32,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:58:32,324 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand 9 states. [2020-09-25 09:58:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:32,542 INFO L93 Difference]: Finished difference Result 286 states and 332 transitions. [2020-09-25 09:58:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:58:32,542 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-09-25 09:58:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:32,546 INFO L225 Difference]: With dead ends: 286 [2020-09-25 09:58:32,546 INFO L226 Difference]: Without dead ends: 227 [2020-09-25 09:58:32,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:58:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-25 09:58:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 205. [2020-09-25 09:58:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 09:58:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-09-25 09:58:32,571 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 85 [2020-09-25 09:58:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:32,572 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-09-25 09:58:32,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:58:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-09-25 09:58:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 09:58:32,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:32,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:32,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:58:32,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:32,578 INFO L82 PathProgramCache]: Analyzing trace with hash 646909882, now seen corresponding path program 2 times [2020-09-25 09:58:32,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:32,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734905964] [2020-09-25 09:58:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:33,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:33,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 09:58:33,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:33,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-09-25 09:58:33,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:33,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:58:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 09:58:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:58:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:33,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:33,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:33,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:33,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:33,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:33,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:33,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:33,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 09:58:33,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:58:33,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:33,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:58:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:58:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:33,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:33,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:33,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:58:33,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:33,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:58:33,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734905964] [2020-09-25 09:58:33,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:33,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 09:58:33,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81766801] [2020-09-25 09:58:33,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 09:58:33,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 09:58:33,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:58:33,928 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 17 states. [2020-09-25 09:58:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:34,348 INFO L93 Difference]: Finished difference Result 316 states and 371 transitions. [2020-09-25 09:58:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:58:34,349 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-09-25 09:58:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:34,352 INFO L225 Difference]: With dead ends: 316 [2020-09-25 09:58:34,352 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 09:58:34,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2020-09-25 09:58:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 09:58:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2020-09-25 09:58:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-25 09:58:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 266 transitions. [2020-09-25 09:58:34,376 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 266 transitions. Word has length 85 [2020-09-25 09:58:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:34,376 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 266 transitions. [2020-09-25 09:58:34,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 09:58:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 266 transitions. [2020-09-25 09:58:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 09:58:34,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:34,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:34,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:58:34,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1996302692, now seen corresponding path program 1 times [2020-09-25 09:58:34,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:34,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936064175] [2020-09-25 09:58:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:34,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:34,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 09:58:34,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 09:58:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:34,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 09:58:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:58:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:34,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:34,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:34,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:34,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:34,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:34,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:58:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:34,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:34,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:34,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:34,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:34,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:34,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:58:34,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:58:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:34,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:58:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:34,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:34,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:34,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:58:34,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 09:58:34,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936064175] [2020-09-25 09:58:34,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:34,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:58:34,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642721783] [2020-09-25 09:58:34,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:58:34,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:34,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:58:34,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:58:34,946 INFO L87 Difference]: Start difference. First operand 230 states and 266 transitions. Second operand 8 states. [2020-09-25 09:58:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:35,121 INFO L93 Difference]: Finished difference Result 326 states and 379 transitions. [2020-09-25 09:58:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:58:35,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-09-25 09:58:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:35,127 INFO L225 Difference]: With dead ends: 326 [2020-09-25 09:58:35,127 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 09:58:35,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:58:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 09:58:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 224. [2020-09-25 09:58:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 09:58:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-09-25 09:58:35,166 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 86 [2020-09-25 09:58:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:35,167 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-09-25 09:58:35,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:58:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-09-25 09:58:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 09:58:35,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:35,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:35,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:58:35,172 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash 808883757, now seen corresponding path program 1 times [2020-09-25 09:58:35,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:35,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85935490] [2020-09-25 09:58:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 09:58:36,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-09-25 09:58:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 09:58:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:58:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:58:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:37,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:37,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:37,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:37,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:58:37,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:58:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 09:58:37,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:58:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:58:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:58:37,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85935490] [2020-09-25 09:58:37,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:37,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 09:58:37,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059046602] [2020-09-25 09:58:37,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 09:58:37,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:37,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 09:58:37,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:58:37,282 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 20 states. [2020-09-25 09:58:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:37,929 INFO L93 Difference]: Finished difference Result 359 states and 415 transitions. [2020-09-25 09:58:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:58:37,930 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-09-25 09:58:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:37,932 INFO L225 Difference]: With dead ends: 359 [2020-09-25 09:58:37,932 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 09:58:37,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-09-25 09:58:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 09:58:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 249. [2020-09-25 09:58:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 09:58:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2020-09-25 09:58:37,947 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 88 [2020-09-25 09:58:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:37,948 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2020-09-25 09:58:37,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 09:58:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2020-09-25 09:58:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 09:58:37,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:37,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:37,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:58:37,950 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:37,951 INFO L82 PathProgramCache]: Analyzing trace with hash -289139437, now seen corresponding path program 1 times [2020-09-25 09:58:37,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:37,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096516244] [2020-09-25 09:58:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 09:58:38,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 09:58:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:58:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 09:58:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:58:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:38,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:38,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:38,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:38,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:58:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:58:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:58:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:58:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:58:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 09:58:38,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096516244] [2020-09-25 09:58:38,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:38,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:58:38,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884358581] [2020-09-25 09:58:38,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:58:38,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:38,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:58:38,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:58:38,481 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand 10 states. [2020-09-25 09:58:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:38,713 INFO L93 Difference]: Finished difference Result 327 states and 372 transitions. [2020-09-25 09:58:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:58:38,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 09:58:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:38,716 INFO L225 Difference]: With dead ends: 327 [2020-09-25 09:58:38,716 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 09:58:38,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:58:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 09:58:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 226. [2020-09-25 09:58:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 09:58:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2020-09-25 09:58:38,728 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 89 [2020-09-25 09:58:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:38,729 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2020-09-25 09:58:38,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:58:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2020-09-25 09:58:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 09:58:38,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:38,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:38,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:58:38,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:38,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:38,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 3 times [2020-09-25 09:58:38,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:38,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805597573] [2020-09-25 09:58:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 09:58:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-09-25 09:58:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:58:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 09:58:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:58:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:39,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:39,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 09:58:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:39,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:58:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 09:58:39,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:58:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:58:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:58:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 09:58:39,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:58:39,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:58:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 09:58:39,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805597573] [2020-09-25 09:58:39,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:39,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 09:58:39,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20315807] [2020-09-25 09:58:39,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:58:39,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:39,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:58:39,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:58:39,991 INFO L87 Difference]: Start difference. First operand 226 states and 252 transitions. Second operand 15 states. [2020-09-25 09:58:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:40,504 INFO L93 Difference]: Finished difference Result 362 states and 418 transitions. [2020-09-25 09:58:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:58:40,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-25 09:58:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:40,507 INFO L225 Difference]: With dead ends: 362 [2020-09-25 09:58:40,507 INFO L226 Difference]: Without dead ends: 303 [2020-09-25 09:58:40,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-25 09:58:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-25 09:58:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 276. [2020-09-25 09:58:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-25 09:58:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 311 transitions. [2020-09-25 09:58:40,522 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 311 transitions. Word has length 89 [2020-09-25 09:58:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:40,523 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 311 transitions. [2020-09-25 09:58:40,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:58:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 311 transitions. [2020-09-25 09:58:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 09:58:40,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:40,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:40,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:58:40,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:40,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-25 09:58:40,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:40,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421403217] [2020-09-25 09:58:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 09:58:40,546 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 09:58:40,546 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:58:40,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:58:40,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:58:40 BoogieIcfgContainer [2020-09-25 09:58:40,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:58:40,588 INFO L168 Benchmark]: Toolchain (without parser) took 14786.04 ms. Allocated memory was 139.5 MB in the beginning and 336.1 MB in the end (delta: 196.6 MB). Free memory was 102.1 MB in the beginning and 128.5 MB in the end (delta: -26.5 MB). Peak memory consumption was 170.1 MB. Max. memory is 7.1 GB. [2020-09-25 09:58:40,589 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 09:58:40,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 180.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-25 09:58:40,591 INFO L168 Benchmark]: Boogie Preprocessor took 49.82 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 178.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-25 09:58:40,591 INFO L168 Benchmark]: RCFGBuilder took 666.01 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 146.5 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-09-25 09:58:40,592 INFO L168 Benchmark]: TraceAbstraction took 13538.31 ms. Allocated memory was 202.4 MB in the beginning and 336.1 MB in the end (delta: 133.7 MB). Free memory was 146.5 MB in the beginning and 128.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 151.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:58:40,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 522.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 180.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.82 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 178.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 666.01 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 146.5 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13538.31 ms. Allocated memory was 202.4 MB in the beginning and 336.1 MB in the end (delta: 133.7 MB). Free memory was 146.5 MB in the beginning and 128.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 151.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1054 SDtfs, 532 SDslu, 11605 SDs, 0 SdLazy, 1267 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred 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, 184 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 693 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 187742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 169/181 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...