/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:45,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:45,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:45,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:45,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:45,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:45,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:45,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:45,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:45,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:45,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:45,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:45,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:45,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:45,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:45,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:45,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:45,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:45,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:45,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:45,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:45,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:45,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:45,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:45,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:45,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:45,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:45,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:45,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:45,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:45,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:45,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:45,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:45,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:45,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:45,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:45,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:45,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:45,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:45,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:45,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:45,213 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 06:42:45,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:45,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:45,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:45,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:45,240 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:45,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:45,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:45,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:45,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:45,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:45,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:45,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:45,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:45,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:45,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:45,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:45,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:45,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:45,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:45,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:45,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:45,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:45,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:45,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:45,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:45,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:45,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:45,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:45,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:45,246 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:45,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:45,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:45,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:45,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:45,768 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:45,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 06:42:45,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f9f19eb0/690b44a59a0a4de6a1917351c24f475f/FLAG30c4e5d9e [2020-09-25 06:42:46,581 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:46,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 06:42:46,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f9f19eb0/690b44a59a0a4de6a1917351c24f475f/FLAG30c4e5d9e [2020-09-25 06:42:46,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f9f19eb0/690b44a59a0a4de6a1917351c24f475f [2020-09-25 06:42:46,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:46,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:46,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:46,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:46,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:46,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:46" (1/1) ... [2020-09-25 06:42:46,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e3b0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:46, skipping insertion in model container [2020-09-25 06:42:46,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:46" (1/1) ... [2020-09-25 06:42:46,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:46,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:47,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:47,502 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:47,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:47,673 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:47,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47 WrapperNode [2020-09-25 06:42:47,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:47,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:47,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:47,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:47,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (1/1) ... [2020-09-25 06:42:47,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:47,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:47,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:47,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:47,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (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 06:42:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:49,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:49,208 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:49,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:49 BoogieIcfgContainer [2020-09-25 06:42:49,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:49,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:49,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:49,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:46" (1/3) ... [2020-09-25 06:42:49,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aab85ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:49, skipping insertion in model container [2020-09-25 06:42:49,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:47" (2/3) ... [2020-09-25 06:42:49,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aab85ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:49, skipping insertion in model container [2020-09-25 06:42:49,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:49" (3/3) ... [2020-09-25 06:42:49,232 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 06:42:49,244 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:49,257 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:49,280 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:49,320 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:49,320 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:49,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:49,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:49,321 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:49,321 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:49,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:49,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:42:49,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:49,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:49,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:49,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 06:42:49,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:49,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951277514] [2020-09-25 06:42:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:54,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 06:42:54,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 06:42:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:54,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:42:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 06:42:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:42:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:42:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:55,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:55,157 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 06:42:55,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951277514] [2020-09-25 06:42:55,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:55,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:55,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987119168] [2020-09-25 06:42:55,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:55,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:55,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:55,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:55,194 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:57,453 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:42:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:57,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 06:42:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:57,481 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:42:57,481 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:42:57,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 06:42:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:42:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:42:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:42:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:42:57,632 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 160 [2020-09-25 06:42:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:57,633 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:42:57,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:42:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 06:42:57,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:57,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:57,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:57,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash 305686135, now seen corresponding path program 1 times [2020-09-25 06:42:57,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:57,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819560639] [2020-09-25 06:42:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 06:43:02,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:43:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:43:02,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:43:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:43:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:02,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:43:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:02,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:43:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:02,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819560639] [2020-09-25 06:43:02,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:02,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:02,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744753423] [2020-09-25 06:43:02,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:02,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:02,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:02,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:02,966 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:43:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:05,552 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 06:43:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:05,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 06:43:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:05,562 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 06:43:05,562 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 06:43:05,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 06:43:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 06:43:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 06:43:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1175 transitions. [2020-09-25 06:43:05,621 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1175 transitions. Word has length 181 [2020-09-25 06:43:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:05,621 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1175 transitions. [2020-09-25 06:43:05,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1175 transitions. [2020-09-25 06:43:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 06:43:05,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:05,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:05,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:05,628 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash -166930083, now seen corresponding path program 1 times [2020-09-25 06:43:05,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:05,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755109823] [2020-09-25 06:43:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:10,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 06:43:10,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:43:10,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:10,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:43:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:43:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:10,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:10,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:10,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:43:10,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:10,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:43:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:43:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:10,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:43:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:10,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755109823] [2020-09-25 06:43:10,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:10,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:10,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034885034] [2020-09-25 06:43:10,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:10,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:10,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:10,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:10,927 INFO L87 Difference]: Start difference. First operand 966 states and 1175 transitions. Second operand 7 states. [2020-09-25 06:43:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:13,340 INFO L93 Difference]: Finished difference Result 2714 states and 3475 transitions. [2020-09-25 06:43:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:13,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 06:43:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:13,363 INFO L225 Difference]: With dead ends: 2714 [2020-09-25 06:43:13,363 INFO L226 Difference]: Without dead ends: 1772 [2020-09-25 06:43:13,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-09-25 06:43:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1637. [2020-09-25 06:43:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 06:43:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2022 transitions. [2020-09-25 06:43:13,494 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2022 transitions. Word has length 182 [2020-09-25 06:43:13,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:13,495 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2022 transitions. [2020-09-25 06:43:13,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2022 transitions. [2020-09-25 06:43:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 06:43:13,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:13,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:13,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:13,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash 621217626, now seen corresponding path program 1 times [2020-09-25 06:43:13,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:13,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89192203] [2020-09-25 06:43:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:18,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 06:43:18,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:18,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-09-25 06:43:18,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:18,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 06:43:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 06:43:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:18,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:18,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:18,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:18,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:18,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:43:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:19,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89192203] [2020-09-25 06:43:19,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:19,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:19,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932187628] [2020-09-25 06:43:19,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:19,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:19,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:19,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:19,037 INFO L87 Difference]: Start difference. First operand 1637 states and 2022 transitions. Second operand 5 states. [2020-09-25 06:43:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:21,231 INFO L93 Difference]: Finished difference Result 4395 states and 5603 transitions. [2020-09-25 06:43:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:21,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 06:43:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:21,262 INFO L225 Difference]: With dead ends: 4395 [2020-09-25 06:43:21,262 INFO L226 Difference]: Without dead ends: 2782 [2020-09-25 06:43:21,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-09-25 06:43:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2078. [2020-09-25 06:43:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-09-25 06:43:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2609 transitions. [2020-09-25 06:43:21,354 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2609 transitions. Word has length 189 [2020-09-25 06:43:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:21,356 INFO L479 AbstractCegarLoop]: Abstraction has 2078 states and 2609 transitions. [2020-09-25 06:43:21,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2609 transitions. [2020-09-25 06:43:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 06:43:21,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:21,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:21,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:21,366 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1816533928, now seen corresponding path program 1 times [2020-09-25 06:43:21,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:21,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335322963] [2020-09-25 06:43:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 06:43:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 06:43:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:26,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:43:26,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:43:26,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:43:26,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:26,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335322963] [2020-09-25 06:43:26,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:26,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:26,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586867673] [2020-09-25 06:43:26,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:26,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:26,726 INFO L87 Difference]: Start difference. First operand 2078 states and 2609 transitions. Second operand 5 states. [2020-09-25 06:43:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:28,329 INFO L93 Difference]: Finished difference Result 4853 states and 6219 transitions. [2020-09-25 06:43:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:28,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 06:43:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:28,343 INFO L225 Difference]: With dead ends: 4853 [2020-09-25 06:43:28,343 INFO L226 Difference]: Without dead ends: 2018 [2020-09-25 06:43:28,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2020-09-25 06:43:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2008. [2020-09-25 06:43:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-25 06:43:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2459 transitions. [2020-09-25 06:43:28,412 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2459 transitions. Word has length 190 [2020-09-25 06:43:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:28,413 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 2459 transitions. [2020-09-25 06:43:28,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2459 transitions. [2020-09-25 06:43:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 06:43:28,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:28,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:28,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:28,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:28,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:28,423 INFO L82 PathProgramCache]: Analyzing trace with hash -220137183, now seen corresponding path program 1 times [2020-09-25 06:43:28,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:28,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855400049] [2020-09-25 06:43:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 06:43:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 06:43:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:33,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:33,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:43:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:33,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:33,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:43:33,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:43:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:33,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855400049] [2020-09-25 06:43:33,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:33,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:43:33,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45956394] [2020-09-25 06:43:33,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:43:33,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:33,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:43:33,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:33,766 INFO L87 Difference]: Start difference. First operand 2008 states and 2459 transitions. Second operand 6 states. [2020-09-25 06:43:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:35,508 INFO L93 Difference]: Finished difference Result 5027 states and 6300 transitions. [2020-09-25 06:43:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:35,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 06:43:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:35,529 INFO L225 Difference]: With dead ends: 5027 [2020-09-25 06:43:35,529 INFO L226 Difference]: Without dead ends: 3043 [2020-09-25 06:43:35,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2020-09-25 06:43:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2866. [2020-09-25 06:43:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2866 states. [2020-09-25 06:43:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3561 transitions. [2020-09-25 06:43:35,620 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3561 transitions. Word has length 203 [2020-09-25 06:43:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:35,621 INFO L479 AbstractCegarLoop]: Abstraction has 2866 states and 3561 transitions. [2020-09-25 06:43:35,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:43:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3561 transitions. [2020-09-25 06:43:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 06:43:35,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:35,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:35,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:43:35,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1773335206, now seen corresponding path program 1 times [2020-09-25 06:43:35,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:35,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067413889] [2020-09-25 06:43:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking...