/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:37:34,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:37:34,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:37:34,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:37:34,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:37:34,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:37:34,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:37:34,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:37:34,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:37:34,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:37:34,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:37:34,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:37:34,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:37:34,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:37:34,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:37:34,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:37:34,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:37:34,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:37:34,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:37:34,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:37:34,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:37:35,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:37:35,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:37:35,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:37:35,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:37:35,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:37:35,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:37:35,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:37:35,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:37:35,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:37:35,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:37:35,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:37:35,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:37:35,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:37:35,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:37:35,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:37:35,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:37:35,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:37:35,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:37:35,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:37:35,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:37:35,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:37:35,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:37:35,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:37:35,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:37:35,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:37:35,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:37:35,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:37:35,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:37:35,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:37:35,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:37:35,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:37:35,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:37:35,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:37:35,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:37:35,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:37:35,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:37:35,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:37:35,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:37:35,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:37:35,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:37:35,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:37:35,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:37:35,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:37:35,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:37:35,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:37:35,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:37:35,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:37:35,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:37:35,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:37:35,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:37:35,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:37:35,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:37:35,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:37:35,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:37:35,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:37:35,506 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:37:35,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-28 09:37:35,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1434ac129/7ac7ee890b7248b69344523e4fe85bd1/FLAGdc1bf2169 [2020-10-28 09:37:36,213 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:37:36,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-28 09:37:36,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1434ac129/7ac7ee890b7248b69344523e4fe85bd1/FLAGdc1bf2169 [2020-10-28 09:37:36,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1434ac129/7ac7ee890b7248b69344523e4fe85bd1 [2020-10-28 09:37:36,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:37:36,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:37:36,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:36,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:37:36,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:37:36,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:36,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7501de01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36, skipping insertion in model container [2020-10-28 09:37:36,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:36,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:37:36,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:37:36,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:36,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:37:36,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:36,947 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:37:36,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36 WrapperNode [2020-10-28 09:37:36,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:36,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:37:36,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:37:36,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:37:36,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:36,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:37,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:37,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:37,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:37,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:37,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... [2020-10-28 09:37:37,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:37:37,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:37:37,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:37:37,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:37:37,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:37:37,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:37:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:37:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:37:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:37:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-28 09:37:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-28 09:37:37,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-28 09:37:37,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:37:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:37:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:37:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:37:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-28 09:37:37,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:37:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:37:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:37:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:37:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:37:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:37:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:37:37,900 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:37:37,901 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:37:37,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:37 BoogieIcfgContainer [2020-10-28 09:37:37,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:37:37,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:37:37,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:37:37,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:37:37,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:36" (1/3) ... [2020-10-28 09:37:37,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cbecf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:37, skipping insertion in model container [2020-10-28 09:37:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:36" (2/3) ... [2020-10-28 09:37:37,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cbecf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:37, skipping insertion in model container [2020-10-28 09:37:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:37" (3/3) ... [2020-10-28 09:37:37,913 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-10-28 09:37:37,927 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:37:37,933 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:37:37,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:37:37,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:37:37,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:37:37,982 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:37:37,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:37:37,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:37:37,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:37:37,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:37:37,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:37:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-28 09:37:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 09:37:38,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:38,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:38,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1277715242, now seen corresponding path program 1 times [2020-10-28 09:37:38,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:38,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585683339] [2020-10-28 09:37:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:37:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-28 09:37:40,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:37:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:37:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:37:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:40,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:40,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:40,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 09:37:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:40,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:40,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:40,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585683339] [2020-10-28 09:37:40,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:40,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:37:40,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338082572] [2020-10-28 09:37:40,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:37:40,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:40,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:37:40,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:37:40,823 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 10 states. [2020-10-28 09:37:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:41,916 INFO L93 Difference]: Finished difference Result 152 states and 229 transitions. [2020-10-28 09:37:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:37:41,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-28 09:37:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:41,930 INFO L225 Difference]: With dead ends: 152 [2020-10-28 09:37:41,930 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 09:37:41,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:37:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 09:37:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2020-10-28 09:37:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 09:37:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2020-10-28 09:37:42,002 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 36 [2020-10-28 09:37:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:42,002 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2020-10-28 09:37:42,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:37:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2020-10-28 09:37:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 09:37:42,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:42,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:42,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:37:42,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:42,007 INFO L82 PathProgramCache]: Analyzing trace with hash 497292120, now seen corresponding path program 1 times [2020-10-28 09:37:42,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:42,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007402097] [2020-10-28 09:37:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:43,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:37:43,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-28 09:37:43,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:43,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:37:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:37:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:43,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:43,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:43,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:37:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:43,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:43,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:43,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:43,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:43,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:43,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:43,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:43,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:43,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:43,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:43,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:37:43,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:43,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:43,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:43,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:43,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:43,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:43,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:37:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:43,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:43,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007402097] [2020-10-28 09:37:43,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:43,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:37:43,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327690518] [2020-10-28 09:37:43,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:37:43,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:43,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:37:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:37:43,668 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand 10 states. [2020-10-28 09:37:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:44,791 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2020-10-28 09:37:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:37:44,795 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-28 09:37:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:44,798 INFO L225 Difference]: With dead ends: 123 [2020-10-28 09:37:44,798 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 09:37:44,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:37:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 09:37:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2020-10-28 09:37:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 09:37:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2020-10-28 09:37:44,817 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 36 [2020-10-28 09:37:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:44,818 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2020-10-28 09:37:44,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:37:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2020-10-28 09:37:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:37:44,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:44,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:44,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:37:44,820 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1092134599, now seen corresponding path program 1 times [2020-10-28 09:37:44,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:44,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353055847] [2020-10-28 09:37:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:37:46,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-28 09:37:46,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:37:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:37:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:37:46,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:46,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:37:46,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:46,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:37:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 09:37:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:37:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 09:37:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:46,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:46,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:46,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:46,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353055847] [2020-10-28 09:37:46,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:46,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:37:46,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930173966] [2020-10-28 09:37:46,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:46,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:46,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:46,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:46,448 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand 9 states. [2020-10-28 09:37:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:47,500 INFO L93 Difference]: Finished difference Result 126 states and 173 transitions. [2020-10-28 09:37:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:37:47,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-28 09:37:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:47,504 INFO L225 Difference]: With dead ends: 126 [2020-10-28 09:37:47,504 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 09:37:47,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:37:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 09:37:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2020-10-28 09:37:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 09:37:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2020-10-28 09:37:47,527 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 40 [2020-10-28 09:37:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:47,528 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2020-10-28 09:37:47,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2020-10-28 09:37:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:37:47,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:47,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:47,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:37:47,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1427825335, now seen corresponding path program 1 times [2020-10-28 09:37:47,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:47,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131561099] [2020-10-28 09:37:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:37:47,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 09:37:47,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:37:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:37:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:47,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:37:47,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:47,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:47,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:37:47,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:47,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 09:37:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:37:47,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:47,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:47,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131561099] [2020-10-28 09:37:47,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:47,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 09:37:47,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888591413] [2020-10-28 09:37:47,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:47,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:47,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:47,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:47,928 INFO L87 Difference]: Start difference. First operand 90 states and 124 transitions. Second operand 9 states. [2020-10-28 09:37:48,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:48,607 INFO L93 Difference]: Finished difference Result 166 states and 221 transitions. [2020-10-28 09:37:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:37:48,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-28 09:37:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:48,611 INFO L225 Difference]: With dead ends: 166 [2020-10-28 09:37:48,611 INFO L226 Difference]: Without dead ends: 121 [2020-10-28 09:37:48,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:37:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-28 09:37:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 98. [2020-10-28 09:37:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 09:37:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 132 transitions. [2020-10-28 09:37:48,661 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 132 transitions. Word has length 40 [2020-10-28 09:37:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:48,664 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 132 transitions. [2020-10-28 09:37:48,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 132 transitions. [2020-10-28 09:37:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 09:37:48,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:48,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:48,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:37:48,675 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:48,675 INFO L82 PathProgramCache]: Analyzing trace with hash -615141410, now seen corresponding path program 1 times [2020-10-28 09:37:48,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:48,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910124796] [2020-10-28 09:37:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:37:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:37:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4377 [2020-10-28 09:37:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:53,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:37:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:53,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:53,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:53,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:53,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:53,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:53,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:53,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:53,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:53,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:53,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:53,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:37:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:53,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:53,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:53,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:37:53,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:53,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:37:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:53,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:53,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:53,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:53,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:53,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:37:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:53,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:37:53,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:37:53,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:53,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:37:53,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:53,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910124796] [2020-10-28 09:37:53,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:53,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:37:53,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348003986] [2020-10-28 09:37:53,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:53,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:53,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:53,286 INFO L87 Difference]: Start difference. First operand 98 states and 132 transitions. Second operand 9 states. [2020-10-28 09:37:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:54,032 INFO L93 Difference]: Finished difference Result 138 states and 184 transitions. [2020-10-28 09:37:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:37:54,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-28 09:37:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:54,035 INFO L225 Difference]: With dead ends: 138 [2020-10-28 09:37:54,035 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:37:54,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:37:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:37:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-10-28 09:37:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 09:37:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 143 transitions. [2020-10-28 09:37:54,058 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 143 transitions. Word has length 44 [2020-10-28 09:37:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:54,059 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 143 transitions. [2020-10-28 09:37:54,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 143 transitions. [2020-10-28 09:37:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 09:37:54,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:54,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:54,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:37:54,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:54,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash 625237752, now seen corresponding path program 2 times [2020-10-28 09:37:54,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:54,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313581243] [2020-10-28 09:37:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:54,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:54,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 09:37:54,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-28 09:37:54,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:54,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:37:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:37:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:37:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:54,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:54,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:54,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:54,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:54,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:54,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:37:54,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:37:54,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:54,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:37:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:54,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 09:37:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:54,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:54,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:37:54,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 09:37:54,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:54,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:37:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:37:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 09:37:54,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313581243] [2020-10-28 09:37:54,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:54,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 09:37:54,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118094888] [2020-10-28 09:37:54,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:37:54,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:37:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:37:54,890 INFO L87 Difference]: Start difference. First operand 108 states and 143 transitions. Second operand 14 states. [2020-10-28 09:37:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:56,578 INFO L93 Difference]: Finished difference Result 191 states and 252 transitions. [2020-10-28 09:37:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:37:56,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-28 09:37:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:56,581 INFO L225 Difference]: With dead ends: 191 [2020-10-28 09:37:56,581 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 09:37:56,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:37:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 09:37:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-10-28 09:37:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 09:37:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 192 transitions. [2020-10-28 09:37:56,630 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 192 transitions. Word has length 44 [2020-10-28 09:37:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:56,632 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 192 transitions. [2020-10-28 09:37:56,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:37:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 192 transitions. [2020-10-28 09:37:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 09:37:56,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:56,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:56,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:37:56,635 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash 606989620, now seen corresponding path program 1 times [2020-10-28 09:37:56,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:56,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262538042] [2020-10-28 09:37:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:37:56,662 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:37:56,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:37:56,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:37:56,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:37:56 BoogieIcfgContainer [2020-10-28 09:37:56,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:37:56,706 INFO L168 Benchmark]: Toolchain (without parser) took 20144.71 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 115.4 MB in the beginning and 341.5 MB in the end (delta: -226.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:56,707 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 158.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:37:56,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.79 ms. Allocated memory is still 158.3 MB. Free memory was 114.7 MB in the beginning and 131.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:56,715 INFO L168 Benchmark]: Boogie Preprocessor took 82.57 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 140.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:56,715 INFO L168 Benchmark]: RCFGBuilder took 870.45 ms. Allocated memory is still 158.3 MB. Free memory was 140.4 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:56,716 INFO L168 Benchmark]: TraceAbstraction took 18796.50 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 114.6 MB in the beginning and 341.5 MB in the end (delta: -226.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:56,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 158.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.79 ms. Allocated memory is still 158.3 MB. Free memory was 114.7 MB in the beginning and 131.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.57 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 140.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 870.45 ms. Allocated memory is still 158.3 MB. Free memory was 140.4 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18796.50 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 114.6 MB in the beginning and 341.5 MB in the end (delta: -226.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add1 ; [L226] unsigned int r_add2 ; [L227] unsigned int zero ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int __retres14 ; [L234] CALL, EXPR base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L234] RET, EXPR base2flt(0, 0) [L234] zero = base2flt(0, 0) [L235] CALL, EXPR base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND TRUE m >= 1U << 25U [L57] COND TRUE e >= 127 [L58] __retres4 = 4294967295U [L73] return (__retres4); [L235] RET, EXPR base2flt(ma, ea) [L235] a = base2flt(ma, ea) [L236] CALL, EXPR base2flt(mb, eb) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int )(e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L236] RET, EXPR base2flt(mb, eb) [L236] b = base2flt(mb, eb) [L237] CALL addflt(a, b) [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND FALSE !(a < b) [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] eb = (int )(b >> 24U) - 128 [L106] mb = mb | (1U << 24U) [L107] CALL __VERIFIER_assert(ea >= eb) [L9] COND TRUE !(cond) [L10] CALL reach_error() [L3] __assert_fail("0", "soft_float_4-2a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 603 SDslu, 620 SDs, 0 SdLazy, 3177 SolverSat, 165 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 28623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 85/97 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...