/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/float-newlib/double_req_bl_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:18:13,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:18:13,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:18:13,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:18:13,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:18:13,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:18:13,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:18:13,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:18:13,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:18:13,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:18:13,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:18:13,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:18:13,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:18:13,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:18:13,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:18:13,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:18:13,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:18:13,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:18:13,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:18:13,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:18:13,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:18:13,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:18:13,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:18:13,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:18:13,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:18:13,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:18:13,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:18:13,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:18:13,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:18:13,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:18:13,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:18:13,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:18:13,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:18:13,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:18:13,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:18:13,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:18:13,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:18:13,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:18:13,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:18:13,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:18:13,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:18:13,320 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 23:18:13,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:18:13,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:18:13,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:18:13,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:18:13,350 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:18:13,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:18:13,350 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:18:13,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:18:13,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:18:13,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:18:13,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:18:13,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:18:13,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:18:13,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:18:13,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:18:13,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:18:13,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:18:13,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:18:13,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:18:13,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:18:13,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:18:13,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:13,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:18:13,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:18:13,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:18:13,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:18:13,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:18:13,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:18:13,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:18:13,354 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 23:18:13,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:18:13,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:18:13,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:18:13,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:18:13,685 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:18:13,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-10-14 23:18:13,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da49f4db8/ba7c462e0a7f40b5a8d9b0c6f142a93f/FLAG785d58752 [2020-10-14 23:18:14,157 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:18:14,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-10-14 23:18:14,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da49f4db8/ba7c462e0a7f40b5a8d9b0c6f142a93f/FLAG785d58752 [2020-10-14 23:18:14,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da49f4db8/ba7c462e0a7f40b5a8d9b0c6f142a93f [2020-10-14 23:18:14,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:18:14,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:18:14,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:14,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:18:14,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:18:14,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:14,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d82a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14, skipping insertion in model container [2020-10-14 23:18:14,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:14,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:18:14,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:18:14,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:14,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:18:14,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:14,993 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:18:14,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14 WrapperNode [2020-10-14 23:18:14,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:14,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:18:14,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:18:14,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:18:15,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (1/1) ... [2020-10-14 23:18:15,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:18:15,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:18:15,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:18:15,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:18:15,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (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 23:18:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:18:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:18:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-14 23:18:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-14 23:18:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-14 23:18:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:18:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:18:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:18:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-14 23:18:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-14 23:18:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:18:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:18:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:18:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:18:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-14 23:18:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:18:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:18:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:18:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:18:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:18:15,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:18:15,439 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 23:18:15,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:15 BoogieIcfgContainer [2020-10-14 23:18:15,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:18:15,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:18:15,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:18:15,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:18:15,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:14" (1/3) ... [2020-10-14 23:18:15,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175059fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:15, skipping insertion in model container [2020-10-14 23:18:15,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:14" (2/3) ... [2020-10-14 23:18:15,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175059fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:15, skipping insertion in model container [2020-10-14 23:18:15,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:15" (3/3) ... [2020-10-14 23:18:15,454 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-10-14 23:18:15,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:18:15,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:18:15,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:18:15,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:18:15,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:18:15,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:18:15,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:18:15,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:18:15,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:18:15,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:18:15,518 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:18:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-14 23:18:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:18:15,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:15,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 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 23:18:15,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:15,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-10-14 23:18:15,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:15,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501368646] [2020-10-14 23:18:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:16,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:18:16,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-14 23:18:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:16,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 23:18:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:18:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:16,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:18:16,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:16,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:16,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:18:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:16,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:18:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:18:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 23:18:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:16,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 23:18:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:18:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:16,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:16,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:18:16,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:18:16,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:16,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:18:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:16,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501368646] [2020-10-14 23:18:16,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:16,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:18:16,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146802803] [2020-10-14 23:18:16,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:18:16,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:16,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:18:16,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:18:16,460 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2020-10-14 23:18:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:16,809 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-10-14 23:18:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:18:16,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 23:18:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:16,823 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:18:16,823 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 23:18:16,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:18:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 23:18:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 23:18:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:18:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-14 23:18:16,882 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 27 [2020-10-14 23:18:16,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:16,882 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-14 23:18:16,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:18:16,883 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-14 23:18:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:18:16,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:16,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 23:18:16,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:18:16,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash -922795904, now seen corresponding path program 1 times [2020-10-14 23:18:16,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:16,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680556949] [2020-10-14 23:18:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:18:17,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 23:18:17,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 23:18:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:17,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:18:17,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:17,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:18:17,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:17,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:17,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:17,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:18:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:18:17,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:18:17,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:18:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:18:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:18:17,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 23:18:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:18:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:17,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680556949] [2020-10-14 23:18:17,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:17,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:18:17,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15132065] [2020-10-14 23:18:17,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:18:17,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:18:17,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:18:17,279 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-14 23:18:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:17,551 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-14 23:18:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:18:17,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-14 23:18:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:17,555 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:18:17,555 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:18:17,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:18:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:18:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 23:18:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:18:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-14 23:18:17,580 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 29 [2020-10-14 23:18:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:17,581 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-14 23:18:17,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:18:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-14 23:18:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:18:17,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:17,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 23:18:17,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:18:17,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:17,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash -440866219, now seen corresponding path program 1 times [2020-10-14 23:18:17,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:17,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347847246] [2020-10-14 23:18:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:18:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 23:18:17,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 23:18:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:17,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:18:17,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:17,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:17,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:18:17,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:18:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:18:17,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:18:17,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:18:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:18:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 23:18:17,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:17,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:18:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:18,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347847246] [2020-10-14 23:18:18,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:18,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:18:18,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039581940] [2020-10-14 23:18:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:18:18,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:18:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:18:18,029 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-14 23:18:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:18,290 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-14 23:18:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:18:18,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-14 23:18:18,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:18,293 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:18:18,293 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:18:18,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:18:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:18:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 23:18:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:18:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-14 23:18:18,311 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 30 [2020-10-14 23:18:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:18,311 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-14 23:18:18,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:18:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-14 23:18:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:18:18,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:18,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 23:18:18,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:18:18,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:18,317 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-10-14 23:18:18,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:18,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433808042] [2020-10-14 23:18:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:18,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:18,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:18:18,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 23:18:18,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:18,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:18:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:18,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:18,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:18,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:18,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:18:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:18,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:18,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:18,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:18,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:18:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:18,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:18:18,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:18:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:18,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:18:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:18:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:18:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:18:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:18:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:18,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:18:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:18:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:18,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433808042] [2020-10-14 23:18:18,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:18,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:18:18,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669033329] [2020-10-14 23:18:18,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:18:18,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:18,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:18:18,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:18:18,639 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-14 23:18:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:18,858 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-14 23:18:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:18:18,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-14 23:18:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:18,860 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:18:18,860 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:18:18,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:18:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:18:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 23:18:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:18:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-14 23:18:18,869 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-10-14 23:18:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:18,869 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-14 23:18:18,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:18:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-14 23:18:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:18:18,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:18,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 23:18:18,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:18:18,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-10-14 23:18:18,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:18,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723888242] [2020-10-14 23:18:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:18:18,885 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:18:18,885 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:18:18,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:18:18,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:18:18 BoogieIcfgContainer [2020-10-14 23:18:18,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:18:18,915 INFO L168 Benchmark]: Toolchain (without parser) took 4385.79 ms. Allocated memory was 147.8 MB in the beginning and 242.2 MB in the end (delta: 94.4 MB). Free memory was 103.9 MB in the beginning and 184.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:18,916 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:18:18,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.34 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 103.5 MB in the beginning and 183.5 MB in the end (delta: -80.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:18,920 INFO L168 Benchmark]: Boogie Preprocessor took 67.80 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 181.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:18,925 INFO L168 Benchmark]: RCFGBuilder took 381.67 ms. Allocated memory is still 205.0 MB. Free memory was 181.2 MB in the beginning and 161.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:18,926 INFO L168 Benchmark]: TraceAbstraction took 3465.52 ms. Allocated memory was 205.0 MB in the beginning and 242.2 MB in the end (delta: 37.2 MB). Free memory was 161.5 MB in the beginning and 184.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:18,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.34 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 103.5 MB in the beginning and 183.5 MB in the end (delta: -80.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.80 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 181.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.67 ms. Allocated memory is still 205.0 MB. Free memory was 181.2 MB in the beginning and 161.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3465.52 ms. Allocated memory was 205.0 MB in the beginning and 242.2 MB in the end (delta: 37.2 MB). Free memory was 161.5 MB in the beginning and 184.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L72] CALL, EXPR isnan_double(x) [L16] return x != x; [L72] RET, EXPR isnan_double(x) [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] RET, EXPR fmax_double(x, y) [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 159 SDtfs, 159 SDslu, 82 SDs, 0 SdLazy, 491 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 8306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...