/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:43:00,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:43:00,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:43:00,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:43:00,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:43:00,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:43:00,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:43:00,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:43:00,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:43:00,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:43:00,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:43:00,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:43:00,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:43:00,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:43:00,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:43:00,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:43:00,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:43:00,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:43:00,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:43:00,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:43:00,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:43:00,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:43:00,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:43:00,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:43:00,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:43:00,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:43:00,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:43:00,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:43:00,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:43:00,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:43:00,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:43:00,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:43:00,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:43:00,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:43:00,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:43:00,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:43:00,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:43:00,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:43:00,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:43:00,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:43:00,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:43:00,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:43:00,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:43:00,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:43:00,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:43:00,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:43:00,126 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:43:00,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:43:00,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:43:00,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:43:00,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:43:00,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:43:00,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:43:00,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:43:00,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:43:00,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:43:00,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:43:00,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:43:00,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:43:00,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:43:00,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:43:00,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:43:00,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:43:00,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:00,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:43:00,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:43:00,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:43:00,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:43:00,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:43:00,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:43:00,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:43:00,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:43:00,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:43:00,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:43:00,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:43:00,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:43:00,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:43:00,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 07:43:00,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa494173b/35a800b15f7844c1bfcee3511e4accf7/FLAG6ca7cd86b [2020-09-25 07:43:01,246 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:43:01,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 07:43:01,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa494173b/35a800b15f7844c1bfcee3511e4accf7/FLAG6ca7cd86b [2020-09-25 07:43:01,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa494173b/35a800b15f7844c1bfcee3511e4accf7 [2020-09-25 07:43:01,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:43:01,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:43:01,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:01,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:43:01,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:43:01,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4f8bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01, skipping insertion in model container [2020-09-25 07:43:01,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:43:01,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:43:01,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:01,930 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:43:02,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:02,094 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:43:02,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02 WrapperNode [2020-09-25 07:43:02,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:02,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:43:02,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:43:02,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:43:02,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... [2020-09-25 07:43:02,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:43:02,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:43:02,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:43:02,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:43:02,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:02,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:43:02,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:43:02,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 07:43:02,234 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 07:43:02,234 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 07:43:02,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 07:43:02,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:43:02,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:43:02,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 07:43:02,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 07:43:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 07:43:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 07:43:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 07:43:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 07:43:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:43:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:43:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:43:02,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:43:02,811 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 07:43:02,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:02 BoogieIcfgContainer [2020-09-25 07:43:02,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:43:02,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:43:02,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:43:02,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:43:02,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:01" (1/3) ... [2020-09-25 07:43:02,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c763bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:02, skipping insertion in model container [2020-09-25 07:43:02,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:02" (2/3) ... [2020-09-25 07:43:02,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c763bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:02, skipping insertion in model container [2020-09-25 07:43:02,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:02" (3/3) ... [2020-09-25 07:43:02,828 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-25 07:43:02,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:43:02,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:43:02,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:43:02,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:43:02,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:43:02,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:43:02,907 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:43:02,907 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:43:02,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:43:02,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:43:02,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:43:02,932 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-25 07:43:02,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 07:43:02,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:02,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:02,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:02,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-25 07:43:02,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:02,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539407604] [2020-09-25 07:43:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:03,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:06,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:43:06,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-09-25 07:43:06,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:06,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:06,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 07:43:06,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:43:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:43:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:06,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:06,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:06,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:06,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:06,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:06,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 07:43:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:06,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:06,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:06,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:43:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:06,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:43:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:06,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:06,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:43:06,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539407604] [2020-09-25 07:43:06,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:06,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:43:06,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391995816] [2020-09-25 07:43:06,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:43:06,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:43:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:06,451 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 9 states. [2020-09-25 07:43:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:06,810 INFO L93 Difference]: Finished difference Result 298 states and 378 transitions. [2020-09-25 07:43:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:43:06,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-09-25 07:43:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:06,830 INFO L225 Difference]: With dead ends: 298 [2020-09-25 07:43:06,830 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 07:43:06,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:43:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 07:43:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2020-09-25 07:43:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 07:43:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-09-25 07:43:06,915 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 81 [2020-09-25 07:43:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:06,916 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-09-25 07:43:06,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:43:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-09-25 07:43:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 07:43:06,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:06,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:06,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:43:06,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1623188401, now seen corresponding path program 1 times [2020-09-25 07:43:06,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:06,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498629460] [2020-09-25 07:43:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:06,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:43:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2427 [2020-09-25 07:43:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:43:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 07:43:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:43:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:09,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:09,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:09,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:09,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 07:43:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:43:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:43:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:09,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:09,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:43:09,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498629460] [2020-09-25 07:43:09,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:09,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:09,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649209573] [2020-09-25 07:43:09,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:09,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:09,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:09,629 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 10 states. [2020-09-25 07:43:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:09,962 INFO L93 Difference]: Finished difference Result 248 states and 292 transitions. [2020-09-25 07:43:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:43:09,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-09-25 07:43:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:09,969 INFO L225 Difference]: With dead ends: 248 [2020-09-25 07:43:09,969 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 07:43:09,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:43:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 07:43:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 144. [2020-09-25 07:43:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 07:43:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2020-09-25 07:43:09,997 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 84 [2020-09-25 07:43:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:09,998 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2020-09-25 07:43:09,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:09,998 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2020-09-25 07:43:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 07:43:10,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:10,002 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:10,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:43:10,002 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash 646909882, now seen corresponding path program 1 times [2020-09-25 07:43:10,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:10,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24806244] [2020-09-25 07:43:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 07:43:10,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-09-25 07:43:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 07:43:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:43:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:10,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:10,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:10,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:10,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 07:43:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:43:10,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:10,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:43:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:10,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:43:10,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 07:43:10,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24806244] [2020-09-25 07:43:10,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:10,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:43:10,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157453185] [2020-09-25 07:43:10,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:43:10,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:43:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:10,923 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand 8 states. [2020-09-25 07:43:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:11,053 INFO L93 Difference]: Finished difference Result 261 states and 300 transitions. [2020-09-25 07:43:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:43:11,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-09-25 07:43:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:11,057 INFO L225 Difference]: With dead ends: 261 [2020-09-25 07:43:11,058 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 07:43:11,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:43:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 07:43:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2020-09-25 07:43:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 07:43:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2020-09-25 07:43:11,075 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 85 [2020-09-25 07:43:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:11,075 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2020-09-25 07:43:11,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:43:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2020-09-25 07:43:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 07:43:11,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:11,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:11,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:43:11,079 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:11,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 2 times [2020-09-25 07:43:11,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:11,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145258403] [2020-09-25 07:43:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:11,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 07:43:11,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-25 07:43:11,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:11,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:43:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 07:43:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:43:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:12,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:12,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 07:43:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:43:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:43:12,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:43:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:43:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:43:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:43:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:43:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 07:43:12,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145258403] [2020-09-25 07:43:12,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:12,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 07:43:12,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093332294] [2020-09-25 07:43:12,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:43:12,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:12,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:43:12,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:43:12,369 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand 15 states. [2020-09-25 07:43:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:12,942 INFO L93 Difference]: Finished difference Result 302 states and 358 transitions. [2020-09-25 07:43:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:43:12,943 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-25 07:43:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:12,946 INFO L225 Difference]: With dead ends: 302 [2020-09-25 07:43:12,946 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 07:43:12,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:43:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 07:43:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2020-09-25 07:43:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-25 07:43:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2020-09-25 07:43:12,967 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 89 [2020-09-25 07:43:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:12,967 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2020-09-25 07:43:12,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:43:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2020-09-25 07:43:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 07:43:12,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:12,970 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:12,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:43:12,971 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:12,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:12,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-25 07:43:12,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:12,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327443097] [2020-09-25 07:43:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:43:12,995 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:43:12,996 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:43:13,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:43:13,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:43:13 BoogieIcfgContainer [2020-09-25 07:43:13,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:43:13,032 INFO L168 Benchmark]: Toolchain (without parser) took 11449.98 ms. Allocated memory was 137.9 MB in the beginning and 320.3 MB in the end (delta: 182.5 MB). Free memory was 100.6 MB in the beginning and 250.5 MB in the end (delta: -150.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:13,033 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:43:13,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.39 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 178.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:13,034 INFO L168 Benchmark]: Boogie Preprocessor took 50.79 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 176.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:13,035 INFO L168 Benchmark]: RCFGBuilder took 671.82 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 144.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:13,036 INFO L168 Benchmark]: TraceAbstraction took 10208.74 ms. Allocated memory was 200.3 MB in the beginning and 320.3 MB in the end (delta: 120.1 MB). Free memory was 143.5 MB in the beginning and 250.5 MB in the end (delta: -107.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:13,040 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.39 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 178.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.79 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 176.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 671.82 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 144.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10208.74 ms. Allocated memory was 200.3 MB in the beginning and 320.3 MB in the end (delta: 120.1 MB). Free memory was 143.5 MB in the beginning and 250.5 MB in the end (delta: -107.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 603 SDtfs, 339 SDslu, 4788 SDs, 0 SdLazy, 500 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, 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, 4 MinimizatonAttempts, 100 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 77025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 102/108 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...