/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:42:51,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:42:51,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:42:51,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:42:51,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:42:51,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:42:51,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:42:51,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:42:51,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:42:51,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:42:51,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:42:51,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:42:51,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:42:51,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:42:51,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:42:51,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:42:51,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:42:51,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:42:51,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:42:51,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:42:51,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:42:51,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:42:51,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:42:51,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:42:51,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:42:51,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:42:51,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:42:51,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:42:51,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:42:51,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:42:51,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:42:51,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:42:51,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:42:51,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:42:51,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:42:51,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:42:51,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:42:51,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:42:51,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:42:51,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:42:51,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:42:51,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:42:51,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:42:51,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:42:51,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:42:51,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:42:51,289 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:42:51,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:42:51,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:42:51,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:42:51,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:42:51,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:42:51,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:42:51,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:42:51,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:42:51,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:42:51,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:42:51,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:42:51,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:42:51,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:42:51,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:42:51,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:42:51,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:42:51,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:51,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:42:51,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:42:51,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:42:51,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:42:51,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:42:51,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:42:51,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:42:51,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:42:51,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:42:51,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:42:51,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:42:51,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:42:51,810 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:42:51,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-09-25 07:42:51,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a222ed1db/8f2ca0d45f084b0b8fd7892b4e28a167/FLAG8cb4e4865 [2020-09-25 07:42:52,440 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:42:52,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-09-25 07:42:52,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a222ed1db/8f2ca0d45f084b0b8fd7892b4e28a167/FLAG8cb4e4865 [2020-09-25 07:42:52,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a222ed1db/8f2ca0d45f084b0b8fd7892b4e28a167 [2020-09-25 07:42:52,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:42:52,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:42:52,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:52,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:42:52,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:42:52,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:52" (1/1) ... [2020-09-25 07:42:52,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:52, skipping insertion in model container [2020-09-25 07:42:52,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:52" (1/1) ... [2020-09-25 07:42:52,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:42:52,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:42:53,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:53,195 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:42:53,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:53,284 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:42:53,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53 WrapperNode [2020-09-25 07:42:53,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:53,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:42:53,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:42:53,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:42:53,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... [2020-09-25 07:42:53,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:42:53,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:42:53,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:42:53,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:42:53,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:53,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:42:53,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:42:53,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-25 07:42:53,553 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-09-25 07:42:53,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 07:42:53,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:42:53,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:42:53,554 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-25 07:42:53,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:42:53,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 07:42:53,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:42:53,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:42:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-09-25 07:42:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 07:42:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:42:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:42:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:42:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 07:42:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:42:53,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:42:53,898 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 07:42:53,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:53 BoogieIcfgContainer [2020-09-25 07:42:53,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:42:53,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:42:53,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:42:53,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:42:53,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:42:52" (1/3) ... [2020-09-25 07:42:53,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56afc14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:53, skipping insertion in model container [2020-09-25 07:42:53,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:53" (2/3) ... [2020-09-25 07:42:53,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56afc14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:53, skipping insertion in model container [2020-09-25 07:42:53,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:53" (3/3) ... [2020-09-25 07:42:53,915 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-09-25 07:42:53,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:42:53,939 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:42:53,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:42:54,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:42:54,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:42:54,001 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:42:54,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:42:54,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:42:54,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:42:54,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:42:54,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:42:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-25 07:42:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 07:42:54,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:54,042 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, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:54,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:54,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:54,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1283430724, now seen corresponding path program 1 times [2020-09-25 07:42:54,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:54,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078476578] [2020-09-25 07:42:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:42:54,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:42:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 07:42:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:54,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 07:42:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:42:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:54,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:54,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:42:54,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:54,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:54,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:54,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:42:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:42:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:42:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:54,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:42:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:42:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:54,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:42:54,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:42:54,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:54,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:42:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:42:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:54,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:54,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:42:54,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:54,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:42:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:54,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:42:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:54,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078476578] [2020-09-25 07:42:54,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:54,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:42:54,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959643193] [2020-09-25 07:42:54,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:42:54,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:54,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:42:54,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:42:54,819 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-25 07:42:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:55,106 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-25 07:42:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:42:55,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 07:42:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:55,122 INFO L225 Difference]: With dead ends: 132 [2020-09-25 07:42:55,123 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 07:42:55,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:42:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 07:42:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 07:42:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 07:42:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-25 07:42:55,187 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-25 07:42:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:55,188 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-25 07:42:55,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:42:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-25 07:42:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 07:42:55,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:55,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:55,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:42:55,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:55,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:55,193 INFO L82 PathProgramCache]: Analyzing trace with hash -611644563, now seen corresponding path program 1 times [2020-09-25 07:42:55,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:55,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571501301] [2020-09-25 07:42:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:55,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:55,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 07:42:55,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:55,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 07:42:55,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:55,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 07:42:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:42:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:55,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:55,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:55,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:42:55,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:55,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 07:42:55,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:55,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:42:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:55,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:55,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:42:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:55,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:55,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:42:55,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 07:42:55,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:55,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:42:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 07:42:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:55,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:55,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:42:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:42:55,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:55,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:42:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:42:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:55,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571501301] [2020-09-25 07:42:55,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:55,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:42:55,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851270157] [2020-09-25 07:42:55,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:42:55,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:55,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:42:55,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:42:55,756 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-25 07:42:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:55,967 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 07:42:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:42:55,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-25 07:42:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:55,972 INFO L225 Difference]: With dead ends: 87 [2020-09-25 07:42:55,972 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 07:42:55,973 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 [2020-09-25 07:42:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 07:42:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-25 07:42:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:42:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 07:42:55,989 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-25 07:42:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:55,989 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 07:42:55,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:42:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 07:42:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 07:42:55,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:55,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:55,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:42:55,992 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1640490466, now seen corresponding path program 1 times [2020-09-25 07:42:55,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:55,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750687189] [2020-09-25 07:42:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 07:42:56,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 07:42:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 07:42:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:56,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:42:56,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:42:56,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 07:42:56,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:56,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:42:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:42:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:42:56,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 07:42:56,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:42:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 07:42:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:42:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:42:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:42:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:56,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750687189] [2020-09-25 07:42:56,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:56,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:42:56,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040083192] [2020-09-25 07:42:56,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:42:56,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:42:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:42:56,417 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 07:42:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:56,648 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-25 07:42:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:42:56,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-25 07:42:56,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:56,650 INFO L225 Difference]: With dead ends: 91 [2020-09-25 07:42:56,650 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 07:42:56,651 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 [2020-09-25 07:42:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 07:42:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-25 07:42:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:42:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 07:42:56,662 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 47 [2020-09-25 07:42:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:56,663 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 07:42:56,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:42:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 07:42:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 07:42:56,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:56,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:56,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:42:56,665 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:56,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1219096216, now seen corresponding path program 1 times [2020-09-25 07:42:56,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:56,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860455167] [2020-09-25 07:42:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:42:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 07:42:56,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:42:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:56,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:42:56,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:56,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:56,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 07:42:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 07:42:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:56,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:42:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:42:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:42:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 07:42:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:42:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 07:42:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:42:57,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:42:57,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:42:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:57,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860455167] [2020-09-25 07:42:57,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:57,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:42:57,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459034298] [2020-09-25 07:42:57,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:42:57,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:57,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:42:57,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:42:57,137 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 07:42:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:57,321 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-25 07:42:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:42:57,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-25 07:42:57,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:57,323 INFO L225 Difference]: With dead ends: 95 [2020-09-25 07:42:57,323 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 07:42:57,325 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 [2020-09-25 07:42:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 07:42:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-09-25 07:42:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:42:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 07:42:57,360 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 48 [2020-09-25 07:42:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:57,361 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 07:42:57,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:42:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 07:42:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 07:42:57,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:57,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:57,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:42:57,365 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:57,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1210069817, now seen corresponding path program 1 times [2020-09-25 07:42:57,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:57,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276052952] [2020-09-25 07:42:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 07:42:57,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 07:42:57,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:42:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:57,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:42:57,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:42:57,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 07:42:57,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 07:42:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:42:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:42:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:42:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 07:42:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:42:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:42:57,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 07:42:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:57,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:57,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:57,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:42:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:42:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:42:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:57,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276052952] [2020-09-25 07:42:57,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:57,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:42:57,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869146698] [2020-09-25 07:42:57,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:42:57,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:57,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:42:57,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:42:57,787 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 07:42:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:57,987 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-25 07:42:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:42:57,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 07:42:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:57,993 INFO L225 Difference]: With dead ends: 91 [2020-09-25 07:42:57,993 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 07:42:57,996 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 [2020-09-25 07:42:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 07:42:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-25 07:42:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:42:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 07:42:58,010 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-25 07:42:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:58,010 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 07:42:58,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:42:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 07:42:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 07:42:58,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:58,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:58,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:42:58,013 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash 815123193, now seen corresponding path program 1 times [2020-09-25 07:42:58,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:58,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223369141] [2020-09-25 07:42:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:42:58,037 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:42:58,037 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:42:58,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:42:58,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:42:58 BoogieIcfgContainer [2020-09-25 07:42:58,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:42:58,078 INFO L168 Benchmark]: Toolchain (without parser) took 5262.63 ms. Allocated memory was 143.1 MB in the beginning and 244.8 MB in the end (delta: 101.7 MB). Free memory was 106.6 MB in the beginning and 138.0 MB in the end (delta: -31.4 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:58,079 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:42:58,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.74 ms. Allocated memory is still 143.1 MB. Free memory was 105.9 MB in the beginning and 95.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:58,087 INFO L168 Benchmark]: Boogie Preprocessor took 177.71 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 95.2 MB in the beginning and 182.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:58,088 INFO L168 Benchmark]: RCFGBuilder took 439.58 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 161.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:58,089 INFO L168 Benchmark]: TraceAbstraction took 4166.82 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 161.1 MB in the beginning and 138.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:58,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.74 ms. Allocated memory is still 143.1 MB. Free memory was 105.9 MB in the beginning and 95.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.71 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 95.2 MB in the beginning and 182.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.58 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 161.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4166.82 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 161.1 MB in the beginning and 138.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 61. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] RET, EXPR __fpclassify_float(x) [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L62] RET, EXPR fmax_float(x, y) [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) [L54] return x != x; [L64] RET, EXPR isnan_float(res) [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 371 SDtfs, 99 SDslu, 729 SDs, 0 SdLazy, 515 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 19508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...