/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:34:29,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:34:29,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:34:29,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:34:29,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:34:29,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:34:29,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:34:30,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:34:30,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:34:30,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:34:30,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:34:30,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:34:30,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:34:30,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:34:30,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:34:30,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:34:30,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:34:30,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:34:30,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:34:30,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:34:30,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:34:30,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:34:30,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:34:30,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:34:30,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:34:30,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:34:30,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:34:30,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:34:30,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:34:30,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:34:30,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:34:30,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:34:30,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:34:30,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:34:30,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:34:30,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:34:30,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:34:30,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:34:30,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:34:30,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:34:30,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:34:30,029 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 [2020-10-14 18:34:30,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:34:30,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:34:30,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:34:30,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:34:30,052 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:34:30,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:34:30,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:34:30,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:34:30,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:34:30,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:34:30,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:34:30,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:34:30,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:34:30,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:34:30,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:34:30,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:34:30,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:34:30,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:34:30,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:34:30,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:34:30,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:34:30,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:34:30,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:34:30,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:34:30,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:34:30,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:34:30,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:34:30,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:34:30,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:34:30,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:34:30,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:34:30,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:34:30,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:34:30,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:34:30,354 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:34:30,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-14 18:34:30,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c014addf3/f13958f5e0a4414098cc2264a3d16f8e/FLAG754696763 [2020-10-14 18:34:30,863 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:34:30,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-14 18:34:30,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c014addf3/f13958f5e0a4414098cc2264a3d16f8e/FLAG754696763 [2020-10-14 18:34:31,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c014addf3/f13958f5e0a4414098cc2264a3d16f8e [2020-10-14 18:34:31,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:34:31,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:34:31,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:31,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:34:31,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:34:31,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f99d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31, skipping insertion in model container [2020-10-14 18:34:31,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:34:31,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:34:31,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:31,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:34:31,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:31,680 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:34:31,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31 WrapperNode [2020-10-14 18:34:31,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:31,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:34:31,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:34:31,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:34:31,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (1/1) ... [2020-10-14 18:34:31,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:34:31,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:34:31,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:34:31,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:34:31,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (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 [2020-10-14 18:34:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:34:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:34:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:34:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 18:34:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 18:34:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 18:34:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:34:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:34:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 18:34:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 18:34:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:34:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 18:34:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 18:34:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 18:34:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:34:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:34:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:34:32,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:34:32,290 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:34:32,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:32 BoogieIcfgContainer [2020-10-14 18:34:32,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:34:32,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:34:32,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:34:32,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:34:32,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:34:31" (1/3) ... [2020-10-14 18:34:32,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123c7f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:32, skipping insertion in model container [2020-10-14 18:34:32,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:31" (2/3) ... [2020-10-14 18:34:32,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123c7f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:32, skipping insertion in model container [2020-10-14 18:34:32,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:32" (3/3) ... [2020-10-14 18:34:32,307 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-14 18:34:32,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:34:32,324 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:34:32,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:34:32,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:34:32,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:34:32,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:34:32,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:34:32,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:34:32,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:34:32,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:34:32,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:34:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-14 18:34:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:34:32,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:32,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:32,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash 931229349, now seen corresponding path program 1 times [2020-10-14 18:34:32,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:32,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882031688] [2020-10-14 18:34:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 18:34:37,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:34:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:34:37,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:34:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:34:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:34:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:37,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:37,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:34:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:34:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:37,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:37,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:34:37,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:37,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:37,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882031688] [2020-10-14 18:34:37,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:37,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:34:37,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987918264] [2020-10-14 18:34:37,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:34:37,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:37,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:34:37,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:37,792 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 6 states. [2020-10-14 18:34:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:37,925 INFO L93 Difference]: Finished difference Result 192 states and 315 transitions. [2020-10-14 18:34:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:34:37,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-14 18:34:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:37,940 INFO L225 Difference]: With dead ends: 192 [2020-10-14 18:34:37,941 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 18:34:37,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:34:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 18:34:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-10-14 18:34:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 18:34:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 127 transitions. [2020-10-14 18:34:38,002 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 127 transitions. Word has length 36 [2020-10-14 18:34:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:38,003 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 127 transitions. [2020-10-14 18:34:38,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:34:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 127 transitions. [2020-10-14 18:34:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:34:38,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:38,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:38,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:34:38,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:38,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:38,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2133981637, now seen corresponding path program 1 times [2020-10-14 18:34:38,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:38,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479459282] [2020-10-14 18:34:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:40,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:34:40,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:34:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2222 [2020-10-14 18:34:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:40,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:34:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:34:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:40,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:40,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:40,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:40,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:40,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:40,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:34:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:40,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:40,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:40,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:40,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:40,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:40,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479459282] [2020-10-14 18:34:40,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:40,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:34:40,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261071863] [2020-10-14 18:34:40,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:34:40,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:40,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:34:40,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:34:40,430 INFO L87 Difference]: Start difference. First operand 86 states and 127 transitions. Second operand 9 states. [2020-10-14 18:34:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:40,674 INFO L93 Difference]: Finished difference Result 194 states and 293 transitions. [2020-10-14 18:34:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:34:40,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-14 18:34:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:40,678 INFO L225 Difference]: With dead ends: 194 [2020-10-14 18:34:40,678 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 18:34:40,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:34:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 18:34:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2020-10-14 18:34:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 18:34:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 197 transitions. [2020-10-14 18:34:40,699 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 197 transitions. Word has length 40 [2020-10-14 18:34:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:40,699 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 197 transitions. [2020-10-14 18:34:40,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:34:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 197 transitions. [2020-10-14 18:34:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:34:40,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:40,702 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] [2020-10-14 18:34:40,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:34:40,702 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:40,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1604433925, now seen corresponding path program 1 times [2020-10-14 18:34:40,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:40,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123370711] [2020-10-14 18:34:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:34:43,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:34:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 18:34:43,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:34:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:34:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:34:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:43,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:43,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:34:43,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:43,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:43,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:43,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:43,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:43,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123370711] [2020-10-14 18:34:43,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:43,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:34:43,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585532054] [2020-10-14 18:34:43,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:34:43,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:34:43,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:43,232 INFO L87 Difference]: Start difference. First operand 133 states and 197 transitions. Second operand 10 states. [2020-10-14 18:34:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:43,665 INFO L93 Difference]: Finished difference Result 294 states and 440 transitions. [2020-10-14 18:34:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:34:43,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 18:34:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:43,669 INFO L225 Difference]: With dead ends: 294 [2020-10-14 18:34:43,669 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 18:34:43,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:34:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 18:34:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 142. [2020-10-14 18:34:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:34:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 208 transitions. [2020-10-14 18:34:43,689 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 208 transitions. Word has length 40 [2020-10-14 18:34:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:43,690 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 208 transitions. [2020-10-14 18:34:43,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:34:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 208 transitions. [2020-10-14 18:34:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:34:43,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:43,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:43,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:34:43,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:43,699 INFO L82 PathProgramCache]: Analyzing trace with hash -947727724, now seen corresponding path program 1 times [2020-10-14 18:34:43,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:43,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841718644] [2020-10-14 18:34:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:34:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:34:46,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-14 18:34:46,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:34:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:34:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:46,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:46,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:46,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:34:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 18:34:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:34:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 18:34:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:46,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:46,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:46,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:34:46,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841718644] [2020-10-14 18:34:46,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:46,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:34:46,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784034239] [2020-10-14 18:34:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:34:46,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:46,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:34:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:34:46,712 INFO L87 Difference]: Start difference. First operand 142 states and 208 transitions. Second operand 11 states. [2020-10-14 18:34:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:47,262 INFO L93 Difference]: Finished difference Result 302 states and 453 transitions. [2020-10-14 18:34:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:34:47,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 18:34:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:47,265 INFO L225 Difference]: With dead ends: 302 [2020-10-14 18:34:47,265 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 18:34:47,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:34:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 18:34:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 129. [2020-10-14 18:34:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 18:34:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 192 transitions. [2020-10-14 18:34:47,282 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 192 transitions. Word has length 40 [2020-10-14 18:34:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:47,282 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 192 transitions. [2020-10-14 18:34:47,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:34:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 192 transitions. [2020-10-14 18:34:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:34:47,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:47,285 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] [2020-10-14 18:34:47,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:34:47,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:47,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1563726516, now seen corresponding path program 1 times [2020-10-14 18:34:47,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:47,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020097259] [2020-10-14 18:34:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:34:48,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-14 18:34:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:34:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:34:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:48,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:48,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:48,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 18:34:48,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:34:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:48,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020097259] [2020-10-14 18:34:48,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:48,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:34:48,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284506764] [2020-10-14 18:34:48,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:34:48,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:48,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:34:48,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:48,322 INFO L87 Difference]: Start difference. First operand 129 states and 192 transitions. Second operand 8 states. [2020-10-14 18:34:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:48,596 INFO L93 Difference]: Finished difference Result 276 states and 423 transitions. [2020-10-14 18:34:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:48,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 18:34:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:48,600 INFO L225 Difference]: With dead ends: 276 [2020-10-14 18:34:48,600 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 18:34:48,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 18:34:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 204. [2020-10-14 18:34:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 18:34:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 308 transitions. [2020-10-14 18:34:48,621 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 308 transitions. Word has length 44 [2020-10-14 18:34:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:48,621 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 308 transitions. [2020-10-14 18:34:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:34:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 308 transitions. [2020-10-14 18:34:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:34:48,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:48,624 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] [2020-10-14 18:34:48,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:34:48,624 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:48,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1620984818, now seen corresponding path program 1 times [2020-10-14 18:34:48,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:48,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982480928] [2020-10-14 18:34:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:34:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-14 18:34:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 18:34:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:34:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:49,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:49,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:49,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:49,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:49,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982480928] [2020-10-14 18:34:49,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:49,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 18:34:49,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765770273] [2020-10-14 18:34:49,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:34:49,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:49,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:34:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:49,106 INFO L87 Difference]: Start difference. First operand 204 states and 308 transitions. Second operand 8 states. [2020-10-14 18:34:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:49,354 INFO L93 Difference]: Finished difference Result 458 states and 675 transitions. [2020-10-14 18:34:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:49,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 18:34:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:49,359 INFO L225 Difference]: With dead ends: 458 [2020-10-14 18:34:49,360 INFO L226 Difference]: Without dead ends: 337 [2020-10-14 18:34:49,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:49,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-14 18:34:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 333. [2020-10-14 18:34:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-14 18:34:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 478 transitions. [2020-10-14 18:34:49,385 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 478 transitions. Word has length 44 [2020-10-14 18:34:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:49,385 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 478 transitions. [2020-10-14 18:34:49,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:34:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 478 transitions. [2020-10-14 18:34:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 18:34:49,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:49,388 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] [2020-10-14 18:34:49,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:34:49,389 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:49,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:49,389 INFO L82 PathProgramCache]: Analyzing trace with hash -383062173, now seen corresponding path program 2 times [2020-10-14 18:34:49,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:49,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915309142] [2020-10-14 18:34:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:34:49,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 18:34:49,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:34:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:34:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:34:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:49,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:49,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:34:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:34:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 18:34:50,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:50,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:34:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:34:50,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915309142] [2020-10-14 18:34:50,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:50,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 18:34:50,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025071499] [2020-10-14 18:34:50,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:34:50,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:34:50,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:34:50,129 INFO L87 Difference]: Start difference. First operand 333 states and 478 transitions. Second operand 13 states. [2020-10-14 18:34:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:50,855 INFO L93 Difference]: Finished difference Result 466 states and 668 transitions. [2020-10-14 18:34:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:34:50,856 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 18:34:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:50,859 INFO L225 Difference]: With dead ends: 466 [2020-10-14 18:34:50,859 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 18:34:50,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:34:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 18:34:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 382. [2020-10-14 18:34:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-14 18:34:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 544 transitions. [2020-10-14 18:34:50,881 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 544 transitions. Word has length 48 [2020-10-14 18:34:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:50,881 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 544 transitions. [2020-10-14 18:34:50,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:34:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 544 transitions. [2020-10-14 18:34:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 18:34:50,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:50,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:50,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:34:50,884 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:50,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1972574553, now seen corresponding path program 1 times [2020-10-14 18:34:50,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:50,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964553300] [2020-10-14 18:34:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 18:34:50,899 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 18:34:50,899 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:34:50,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:34:50,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:34:50 BoogieIcfgContainer [2020-10-14 18:34:50,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:34:50,925 INFO L168 Benchmark]: Toolchain (without parser) took 19679.07 ms. Allocated memory was 145.8 MB in the beginning and 458.2 MB in the end (delta: 312.5 MB). Free memory was 101.5 MB in the beginning and 203.6 MB in the end (delta: -102.0 MB). Peak memory consumption was 210.4 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,926 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.92 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 101.5 MB in the beginning and 179.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,928 INFO L168 Benchmark]: Boogie Preprocessor took 51.18 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,928 INFO L168 Benchmark]: RCFGBuilder took 562.21 ms. Allocated memory is still 201.9 MB. Free memory was 177.5 MB in the beginning and 147.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,929 INFO L168 Benchmark]: TraceAbstraction took 18626.83 ms. Allocated memory was 201.9 MB in the beginning and 458.2 MB in the end (delta: 256.4 MB). Free memory was 146.4 MB in the beginning and 203.6 MB in the end (delta: -57.2 MB). Peak memory consumption was 199.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 432.92 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 101.5 MB in the beginning and 179.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.18 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 562.21 ms. Allocated memory is still 201.9 MB. Free memory was 177.5 MB in the beginning and 147.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18626.83 ms. Allocated memory was 201.9 MB in the beginning and 458.2 MB in the end (delta: 256.4 MB). Free memory was 146.4 MB in the beginning and 203.6 MB in the end (delta: -57.2 MB). Peak memory consumption was 199.2 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 100, overapproximation of bitwiseAnd at line 98. 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_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L241] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] RET, EXPR base2flt(0, 0) [L241] zero = base2flt(0, 0) [L242] 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); [L242] RET, EXPR base2flt(ma, ea) [L242] a = base2flt(ma, ea) [L243] 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); [L243] RET, EXPR base2flt(mb, eb) [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L266] 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, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 943 SDtfs, 523 SDslu, 6369 SDs, 0 SdLazy, 1523 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 210 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 38795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 80/109 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...