/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=SHALLOWEST --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_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:01:19,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:01:19,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:01:19,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:01:19,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:01:19,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:01:19,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:01:19,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:01:19,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:01:19,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:01:19,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:01:19,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:01:19,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:01:19,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:01:19,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:01:19,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:01:19,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:01:19,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:01:19,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:01:19,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:01:19,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:01:19,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:01:19,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:01:19,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:01:19,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:01:19,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:01:19,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:01:19,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:01:19,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:01:19,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:01:19,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:01:19,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:01:19,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:01:19,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:01:19,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:01:19,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:01:19,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:01:19,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:01:19,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:01:19,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:01:19,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:01:19,869 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 [2020-10-26 20:01:19,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:01:19,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:01:19,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:01:19,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:01:19,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:01:19,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:01:19,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:01:19,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:01:19,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:01:19,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:01:19,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:01:19,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:01:19,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:01:19,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:01:19,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:01:19,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:01:19,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:01:19,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:01:19,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:01:19,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:01:19,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:01:19,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:01:19,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:01:19,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:01:19,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:01:19,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:01:19,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:01:19,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:01:19,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:01:19,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:01:20,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:01:20,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:01:20,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:01:20,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:01:20,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:01:20,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-26 20:01:20,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50527995/68705ce88f7f4975b64fa82896e05fff/FLAG5eeb650b6 [2020-10-26 20:01:21,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:01:21,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-26 20:01:21,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50527995/68705ce88f7f4975b64fa82896e05fff/FLAG5eeb650b6 [2020-10-26 20:01:21,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50527995/68705ce88f7f4975b64fa82896e05fff [2020-10-26 20:01:21,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:01:21,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:01:21,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:01:21,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:01:21,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:01:21,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:21,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b197cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21, skipping insertion in model container [2020-10-26 20:01:21,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:21,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:01:21,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:01:21,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:01:21,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:01:21,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:01:21,953 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:01:21,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21 WrapperNode [2020-10-26 20:01:21,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:01:21,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:01:21,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:01:21,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:01:21,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:21,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:21,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:21,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:21,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:22,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:22,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (1/1) ... [2020-10-26 20:01:22,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:01:22,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:01:22,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:01:22,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:01:22,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (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 [2020-10-26 20:01:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:01:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:01:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:01:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 20:01:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-26 20:01:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-26 20:01:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-26 20:01:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:01:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:01:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:01:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:01:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:01:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-26 20:01:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-26 20:01:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 20:01:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-26 20:01:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-26 20:01:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-26 20:01:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:01:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:01:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:01:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:01:22,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:01:22,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:01:22,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:01:22,901 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:01:22,904 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 20:01:22,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:01:22 BoogieIcfgContainer [2020-10-26 20:01:22,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:01:22,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:01:22,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:01:22,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:01:22,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:01:21" (1/3) ... [2020-10-26 20:01:22,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e5dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:01:22, skipping insertion in model container [2020-10-26 20:01:22,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:21" (2/3) ... [2020-10-26 20:01:22,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e5dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:01:22, skipping insertion in model container [2020-10-26 20:01:22,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:01:22" (3/3) ... [2020-10-26 20:01:22,920 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-26 20:01:22,934 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:01:22,940 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:01:22,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:01:22,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:01:22,983 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:01:22,984 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:01:22,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:01:22,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:01:22,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:01:22,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:01:22,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:01:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-26 20:01:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-26 20:01:23,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:23,014 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, 1, 1] [2020-10-26 20:01:23,014 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash -217491453, now seen corresponding path program 1 times [2020-10-26 20:01:23,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:23,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855039977] [2020-10-26 20:01:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 20:01:28,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:28,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 20:01:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:01:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-26 20:01:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 20:01:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:01:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:28,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:28,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:01:28,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:28,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:01:28,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:28,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:28,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 20:01:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:28,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:28,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:28,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:28,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:28,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:28,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855039977] [2020-10-26 20:01:28,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:28,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:01:28,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190481683] [2020-10-26 20:01:28,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:01:28,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:28,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:01:28,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:01:28,748 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 7 states. [2020-10-26 20:01:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:29,843 INFO L93 Difference]: Finished difference Result 198 states and 321 transitions. [2020-10-26 20:01:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:01:29,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-26 20:01:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:29,859 INFO L225 Difference]: With dead ends: 198 [2020-10-26 20:01:29,859 INFO L226 Difference]: Without dead ends: 113 [2020-10-26 20:01:29,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-26 20:01:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2020-10-26 20:01:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-26 20:01:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2020-10-26 20:01:29,932 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 38 [2020-10-26 20:01:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:29,933 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2020-10-26 20:01:29,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:01:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2020-10-26 20:01:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 20:01:29,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:29,936 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, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:29,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:01:29,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1327575581, now seen corresponding path program 1 times [2020-10-26 20:01:29,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:29,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382869674] [2020-10-26 20:01:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 20:01:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2433 [2020-10-26 20:01:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:01:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-26 20:01:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:01:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:32,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:32,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:32,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:01:32,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:32,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:32,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:32,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:32,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:32,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:32,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:01:32,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 20:01:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:32,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:32,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:32,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382869674] [2020-10-26 20:01:32,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:32,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:01:32,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317731600] [2020-10-26 20:01:32,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:01:32,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:32,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:01:32,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:01:32,557 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand 7 states. [2020-10-26 20:01:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:33,417 INFO L93 Difference]: Finished difference Result 178 states and 266 transitions. [2020-10-26 20:01:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:01:33,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-26 20:01:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:33,421 INFO L225 Difference]: With dead ends: 178 [2020-10-26 20:01:33,421 INFO L226 Difference]: Without dead ends: 127 [2020-10-26 20:01:33,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-26 20:01:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-10-26 20:01:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-26 20:01:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 175 transitions. [2020-10-26 20:01:33,448 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 175 transitions. Word has length 42 [2020-10-26 20:01:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:33,449 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 175 transitions. [2020-10-26 20:01:33,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:01:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 175 transitions. [2020-10-26 20:01:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 20:01:33,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:33,452 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, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:33,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:01:33,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1956274465, now seen corresponding path program 1 times [2020-10-26 20:01:33,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:33,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850972634] [2020-10-26 20:01:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:38,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:38,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 20:01:38,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 20:01:38,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 20:01:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-26 20:01:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:01:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:38,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:38,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:38,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:38,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:38,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:01:38,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:38,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:38,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:38,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:38,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:38,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 20:01:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:38,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:38,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:38,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:38,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:38,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:38,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:38,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850972634] [2020-10-26 20:01:38,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:38,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 20:01:38,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617813926] [2020-10-26 20:01:38,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 20:01:38,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:38,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 20:01:38,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:38,811 INFO L87 Difference]: Start difference. First operand 119 states and 175 transitions. Second operand 11 states. [2020-10-26 20:01:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:41,205 INFO L93 Difference]: Finished difference Result 256 states and 389 transitions. [2020-10-26 20:01:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:01:41,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-26 20:01:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:41,209 INFO L225 Difference]: With dead ends: 256 [2020-10-26 20:01:41,210 INFO L226 Difference]: Without dead ends: 201 [2020-10-26 20:01:41,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:01:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-26 20:01:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 128. [2020-10-26 20:01:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 20:01:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 186 transitions. [2020-10-26 20:01:41,237 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 186 transitions. Word has length 42 [2020-10-26 20:01:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:41,239 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 186 transitions. [2020-10-26 20:01:41,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 20:01:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 186 transitions. [2020-10-26 20:01:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 20:01:41,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:41,242 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, 1, 1] [2020-10-26 20:01:41,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:01:41,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1622351214, now seen corresponding path program 1 times [2020-10-26 20:01:41,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:41,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490794915] [2020-10-26 20:01:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:41,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 20:01:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4021 [2020-10-26 20:01:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 20:01:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:01:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 20:01:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:01:45,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:01:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:01:45,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 20:01:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:01:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:01:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 20:01:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:45,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:45,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:01:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 20:01:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:01:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:01:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490794915] [2020-10-26 20:01:45,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:45,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:01:45,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095673813] [2020-10-26 20:01:45,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:01:45,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:45,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:01:45,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:01:45,408 INFO L87 Difference]: Start difference. First operand 128 states and 186 transitions. Second operand 5 states. [2020-10-26 20:01:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:45,917 INFO L93 Difference]: Finished difference Result 245 states and 358 transitions. [2020-10-26 20:01:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:01:45,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-26 20:01:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:45,924 INFO L225 Difference]: With dead ends: 245 [2020-10-26 20:01:45,924 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 20:01:45,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:01:45,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 20:01:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2020-10-26 20:01:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-26 20:01:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 158 transitions. [2020-10-26 20:01:45,964 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 158 transitions. Word has length 42 [2020-10-26 20:01:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:45,965 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 158 transitions. [2020-10-26 20:01:45,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:01:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 158 transitions. [2020-10-26 20:01:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 20:01:45,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:45,969 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, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:45,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:01:45,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:45,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:45,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1039539288, now seen corresponding path program 1 times [2020-10-26 20:01:45,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:45,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80696728] [2020-10-26 20:01:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:01:46,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:01:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-26 20:01:46,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:01:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-26 20:01:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:01:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:46,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:46,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:01:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:01:46,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:01:46,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:46,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 20:01:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:46,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:46,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:46,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80696728] [2020-10-26 20:01:46,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:46,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 20:01:46,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178527713] [2020-10-26 20:01:46,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:01:46,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:01:46,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:01:46,529 INFO L87 Difference]: Start difference. First operand 112 states and 158 transitions. Second operand 7 states. [2020-10-26 20:01:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:47,312 INFO L93 Difference]: Finished difference Result 232 states and 336 transitions. [2020-10-26 20:01:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:01:47,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-26 20:01:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:47,316 INFO L225 Difference]: With dead ends: 232 [2020-10-26 20:01:47,317 INFO L226 Difference]: Without dead ends: 164 [2020-10-26 20:01:47,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-26 20:01:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-10-26 20:01:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-26 20:01:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 227 transitions. [2020-10-26 20:01:47,341 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 227 transitions. Word has length 46 [2020-10-26 20:01:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:47,342 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 227 transitions. [2020-10-26 20:01:47,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:01:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 227 transitions. [2020-10-26 20:01:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 20:01:47,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:47,345 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, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:47,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:01:47,345 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:47,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1740603866, now seen corresponding path program 1 times [2020-10-26 20:01:47,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:47,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705352713] [2020-10-26 20:01:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:01:49,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-10-26 20:01:49,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:01:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-26 20:01:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:01:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:49,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:49,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:01:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:01:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:01:49,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:01:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 20:01:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:49,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:49,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:49,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705352713] [2020-10-26 20:01:49,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:49,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 20:01:49,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322143477] [2020-10-26 20:01:49,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 20:01:49,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:49,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 20:01:49,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:01:49,412 INFO L87 Difference]: Start difference. First operand 160 states and 227 transitions. Second operand 10 states. [2020-10-26 20:01:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:50,727 INFO L93 Difference]: Finished difference Result 307 states and 448 transitions. [2020-10-26 20:01:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:01:50,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-26 20:01:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:50,731 INFO L225 Difference]: With dead ends: 307 [2020-10-26 20:01:50,731 INFO L226 Difference]: Without dead ends: 215 [2020-10-26 20:01:50,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-26 20:01:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-26 20:01:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 172. [2020-10-26 20:01:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-26 20:01:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2020-10-26 20:01:50,759 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 237 transitions. Word has length 46 [2020-10-26 20:01:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:50,759 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 237 transitions. [2020-10-26 20:01:50,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 20:01:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 237 transitions. [2020-10-26 20:01:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 20:01:50,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:50,762 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, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:50,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:01:50,762 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:50,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1313335811, now seen corresponding path program 2 times [2020-10-26 20:01:50,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:50,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371547114] [2020-10-26 20:01:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:01:50,792 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:01:50,792 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:01:50,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:01:50,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:01:50 BoogieIcfgContainer [2020-10-26 20:01:50,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:01:50,835 INFO L168 Benchmark]: Toolchain (without parser) took 29322.81 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 127.1 MB in the beginning and 233.1 MB in the end (delta: -106.0 MB). Peak memory consumption was 60.7 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,836 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 152.0 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:01:50,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.77 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 113.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,845 INFO L168 Benchmark]: Boogie Preprocessor took 58.79 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 111.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,845 INFO L168 Benchmark]: RCFGBuilder took 891.84 ms. Allocated memory is still 152.0 MB. Free memory was 111.4 MB in the beginning and 115.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,846 INFO L168 Benchmark]: TraceAbstraction took 27920.90 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 115.3 MB in the beginning and 233.1 MB in the end (delta: -117.8 MB). Peak memory consumption was 48.4 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 152.0 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.77 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 113.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.79 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 111.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 891.84 ms. Allocated memory is still 152.0 MB. Free memory was 111.4 MB in the beginning and 115.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27920.90 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 115.3 MB in the beginning and 233.1 MB in the end (delta: -117.8 MB). Peak memory consumption was 48.4 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_add ; [L226] unsigned int zero ; [L227] int sa ; [L228] int sb ; [L229] int tmp ; [L230] int tmp___0 ; [L231] int tmp___1 ; [L232] int tmp___2 ; [L233] int tmp___3 ; [L234] int tmp___4 ; [L235] int tmp___5 ; [L236] int tmp___6 ; [L237] int tmp___7 ; [L238] int tmp___8 ; [L239] int tmp___9 ; [L240] int __retres23 ; [L244] CALL, EXPR base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L244] RET, EXPR base2flt(0, 0) [L244] zero = base2flt(0, 0) [L245] 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 FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L245] RET, EXPR base2flt(ma, ea) [L245] a = base2flt(ma, ea) [L246] 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); [L246] RET, EXPR base2flt(mb, eb) [L246] b = base2flt(mb, eb) [L248] COND FALSE !(a < zero) [L251] COND TRUE a > zero [L252] tmp = 1 [L256] sa = tmp [L258] COND FALSE !(b < zero) [L261] COND TRUE b > zero [L262] tmp___0 = 1 [L266] sb = tmp___0 [L269] 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 TRUE a < b [L88] tmp = a [L89] a = b [L90] b = tmp [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_1-2a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.8s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 633 SDtfs, 1023 SDslu, 482 SDs, 0 SdLazy, 3417 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 165 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 250 ConstructedInterpolants, 0 QuantifiedInterpolants, 33065 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 61/90 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...