/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:00,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:00,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:00,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:00,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:00,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:00,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:00,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:00,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:00,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:00,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:00,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:00,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:00,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:00,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:00,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:00,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:00,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:00,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:00,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:00,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:00,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:00,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:00,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:00,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:00,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:00,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:00,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:00,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:00,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:00,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:00,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:00,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:00,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:00,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:00,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:00,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:00,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:00,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:00,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:00,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:00,304 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 10:12:00,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:00,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:00,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:00,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:00,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:00,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:00,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:00,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:00,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:00,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:00,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:00,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:00,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:00,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:00,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:00,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:00,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:00,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:00,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:00,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:00,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:00,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:00,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:00,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:00,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:00,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:00,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:00,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:00,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:00,337 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:00,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:00,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:00,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:00,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:00,815 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:00,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 10:12:00,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0cd19294/acc10f3cc9344fcc95fe440cc4b7f40c/FLAGab67d5798 [2020-09-25 10:12:01,591 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:01,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 10:12:01,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0cd19294/acc10f3cc9344fcc95fe440cc4b7f40c/FLAGab67d5798 [2020-09-25 10:12:01,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0cd19294/acc10f3cc9344fcc95fe440cc4b7f40c [2020-09-25 10:12:01,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:01,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:01,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:01,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:01,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:01,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:01" (1/1) ... [2020-09-25 10:12:01,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d7e22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:01, skipping insertion in model container [2020-09-25 10:12:01,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:01" (1/1) ... [2020-09-25 10:12:01,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:01,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:02,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:02,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:02,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:02,794 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:02,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02 WrapperNode [2020-09-25 10:12:02,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:02,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:02,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:02,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:02,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... [2020-09-25 10:12:02,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:02,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:02,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:02,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:02,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:04,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:04,648 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:04,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:04 BoogieIcfgContainer [2020-09-25 10:12:04,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:04,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:04,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:04,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:04,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:01" (1/3) ... [2020-09-25 10:12:04,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485bd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:04, skipping insertion in model container [2020-09-25 10:12:04,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:02" (2/3) ... [2020-09-25 10:12:04,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485bd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:04, skipping insertion in model container [2020-09-25 10:12:04,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:04" (3/3) ... [2020-09-25 10:12:04,668 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 10:12:04,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:04,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:04,716 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:04,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:04,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:04,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:04,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:04,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:04,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:04,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:04,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:12:04,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:04,799 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] [2020-09-25 10:12:04,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:04,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 10:12:04,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:04,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088718078] [2020-09-25 10:12:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:06,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:06,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 10:12:06,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-09-25 10:12:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:06,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:12:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:12:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:06,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:12:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:06,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:06,626 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 10:12:06,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088718078] [2020-09-25 10:12:06,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:06,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:06,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225624636] [2020-09-25 10:12:06,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:06,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:06,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:06,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:06,663 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:08,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:08,814 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:12:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:08,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 10:12:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:08,841 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:12:08,842 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:12:08,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:12:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:12:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:12:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:12:08,958 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 63 [2020-09-25 10:12:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:08,959 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:12:08,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:12:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 10:12:08,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:08,971 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, 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] [2020-09-25 10:12:08,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:08,979 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:08,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1742825944, now seen corresponding path program 1 times [2020-09-25 10:12:08,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:08,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127632790] [2020-09-25 10:12:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:09,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:14,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 10:12:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:12:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:14,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 10:12:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:14,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:14,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:12:14,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:14,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:14,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 10:12:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:14,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127632790] [2020-09-25 10:12:14,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:14,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:14,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366945741] [2020-09-25 10:12:14,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:14,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:14,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:14,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:14,555 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 10:12:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:16,321 INFO L93 Difference]: Finished difference Result 885 states and 1111 transitions. [2020-09-25 10:12:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:12:16,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-09-25 10:12:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:16,329 INFO L225 Difference]: With dead ends: 885 [2020-09-25 10:12:16,329 INFO L226 Difference]: Without dead ends: 883 [2020-09-25 10:12:16,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-09-25 10:12:16,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 699. [2020-09-25 10:12:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 10:12:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 877 transitions. [2020-09-25 10:12:16,377 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 877 transitions. Word has length 142 [2020-09-25 10:12:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:16,378 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 877 transitions. [2020-09-25 10:12:16,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 877 transitions. [2020-09-25 10:12:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 10:12:16,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:16,383 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, 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] [2020-09-25 10:12:16,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:16,384 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:16,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:16,384 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 10:12:16,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:16,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6186290] [2020-09-25 10:12:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:12:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:12:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:12:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:12:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:21,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:21,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:21,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 10:12:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:22,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6186290] [2020-09-25 10:12:22,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:22,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:12:22,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644597654] [2020-09-25 10:12:22,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:12:22,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:22,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:12:22,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:22,099 INFO L87 Difference]: Start difference. First operand 699 states and 877 transitions. Second operand 12 states. [2020-09-25 10:12:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:25,305 INFO L93 Difference]: Finished difference Result 1737 states and 2275 transitions. [2020-09-25 10:12:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:25,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-09-25 10:12:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:25,317 INFO L225 Difference]: With dead ends: 1737 [2020-09-25 10:12:25,318 INFO L226 Difference]: Without dead ends: 1011 [2020-09-25 10:12:25,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:12:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-25 10:12:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 841. [2020-09-25 10:12:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-09-25 10:12:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1027 transitions. [2020-09-25 10:12:25,352 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1027 transitions. Word has length 146 [2020-09-25 10:12:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:25,353 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1027 transitions. [2020-09-25 10:12:25,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:12:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1027 transitions. [2020-09-25 10:12:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:12:25,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:25,356 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, 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] [2020-09-25 10:12:25,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:25,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 10:12:25,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:25,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869118919] [2020-09-25 10:12:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:30,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 10:12:30,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 10:12:30,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:30,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 10:12:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:30,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:30,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:12:30,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:30,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:30,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:12:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:30,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:30,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869118919] [2020-09-25 10:12:30,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:30,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:30,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236310679] [2020-09-25 10:12:30,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:30,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:30,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:30,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:30,838 INFO L87 Difference]: Start difference. First operand 841 states and 1027 transitions. Second operand 8 states. [2020-09-25 10:12:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:34,527 INFO L93 Difference]: Finished difference Result 2899 states and 3771 transitions. [2020-09-25 10:12:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:34,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 10:12:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:34,547 INFO L225 Difference]: With dead ends: 2899 [2020-09-25 10:12:34,547 INFO L226 Difference]: Without dead ends: 2073 [2020-09-25 10:12:34,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2020-09-25 10:12:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1811. [2020-09-25 10:12:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-09-25 10:12:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2286 transitions. [2020-09-25 10:12:34,646 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2286 transitions. Word has length 152 [2020-09-25 10:12:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:34,646 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2286 transitions. [2020-09-25 10:12:34,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2286 transitions. [2020-09-25 10:12:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:12:34,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:34,651 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, 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] [2020-09-25 10:12:34,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:34,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1916393390, now seen corresponding path program 1 times [2020-09-25 10:12:34,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:34,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677555094] [2020-09-25 10:12:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 10:12:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:12:39,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:39,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 10:12:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:39,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:39,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 10:12:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-25 10:12:40,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:40,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:40,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:40,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:12:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:40,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677555094] [2020-09-25 10:12:40,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:40,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:12:40,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937578089] [2020-09-25 10:12:40,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:12:40,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:40,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:12:40,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:40,525 INFO L87 Difference]: Start difference. First operand 1811 states and 2286 transitions. Second operand 10 states. [2020-09-25 10:12:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:43,367 INFO L93 Difference]: Finished difference Result 4121 states and 5171 transitions. [2020-09-25 10:12:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:43,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-09-25 10:12:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:43,380 INFO L225 Difference]: With dead ends: 4121 [2020-09-25 10:12:43,380 INFO L226 Difference]: Without dead ends: 2297 [2020-09-25 10:12:43,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:12:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-25 10:12:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1972. [2020-09-25 10:12:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2020-09-25 10:12:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2458 transitions. [2020-09-25 10:12:43,446 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2458 transitions. Word has length 195 [2020-09-25 10:12:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:43,447 INFO L479 AbstractCegarLoop]: Abstraction has 1972 states and 2458 transitions. [2020-09-25 10:12:43,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:12:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2458 transitions. [2020-09-25 10:12:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 10:12:43,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:43,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 10:12:43,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:43,454 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:43,454 INFO L82 PathProgramCache]: Analyzing trace with hash 34942326, now seen corresponding path program 1 times [2020-09-25 10:12:43,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:43,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510297400] [2020-09-25 10:12:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking...