/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/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:34,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:34,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:34,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:34,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:34,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:34,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:34,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:34,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:34,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:34,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:34,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:34,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:34,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:34,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:34,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:34,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:34,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:34,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:34,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:34,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:34,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:34,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:34,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:34,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:34,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:34,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:34,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:34,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:34,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:34,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:34,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:34,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:34,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:34,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:34,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:34,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:34,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:34,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:34,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:34,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:34,930 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 10:06:34,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:34,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:34,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:34,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:34,983 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:34,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:34,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:34,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:34,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:34,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:34,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:34,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:34,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:34,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:34,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:34,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:34,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:34,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:34,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:34,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:34,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:34,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:34,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:34,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:34,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:34,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:34,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:34,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:34,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:34,989 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 10:06:35,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:35,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:35,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:35,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:35,514 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:35,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 10:06:35,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b559bfb7/edbaf9b6a3fa43cda4b975c71ee9cfa0/FLAG038aae1e7 [2020-09-25 10:06:36,261 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:36,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 10:06:36,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b559bfb7/edbaf9b6a3fa43cda4b975c71ee9cfa0/FLAG038aae1e7 [2020-09-25 10:06:36,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b559bfb7/edbaf9b6a3fa43cda4b975c71ee9cfa0 [2020-09-25 10:06:36,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:36,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:36,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:36,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:36,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:36,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36, skipping insertion in model container [2020-09-25 10:06:36,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:36,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:37,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:37,222 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:37,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:37,453 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:37,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37 WrapperNode [2020-09-25 10:06:37,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:37,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:37,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:37,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:37,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (1/1) ... [2020-09-25 10:06:37,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:37,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:37,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:37,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:37,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (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 10:06:37,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:37,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:37,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:37,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:37,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:37,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:37,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:37,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:37,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:37,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:37,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:39,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:39,225 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:39,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:39 BoogieIcfgContainer [2020-09-25 10:06:39,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:39,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:39,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:39,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:39,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:36" (1/3) ... [2020-09-25 10:06:39,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:39, skipping insertion in model container [2020-09-25 10:06:39,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:37" (2/3) ... [2020-09-25 10:06:39,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:39, skipping insertion in model container [2020-09-25 10:06:39,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:39" (3/3) ... [2020-09-25 10:06:39,244 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-25 10:06:39,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:39,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:39,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:39,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:39,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:39,342 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:39,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:39,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:39,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:39,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:39,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 10:06:39,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:39,423 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] [2020-09-25 10:06:39,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:39,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:39,432 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-25 10:06:39,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:39,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 10:06:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 10:06:44,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:44,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:06:44,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:06:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:06:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:45,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:06:45,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:06:45,163 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 10:06:45,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 10:06:45,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:45,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:45,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642760209] [2020-09-25 10:06:45,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:45,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:45,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:45,209 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:47,592 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 10:06:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:47,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 10:06:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:47,634 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 10:06:47,634 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 10:06:47,647 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 10:06:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 10:06:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 10:06:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:47,796 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 120 [2020-09-25 10:06:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:47,798 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:47,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 10:06:47,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:47,809 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:06:47,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:47,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:47,811 INFO L82 PathProgramCache]: Analyzing trace with hash -858442752, now seen corresponding path program 1 times [2020-09-25 10:06:47,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:47,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227101835] [2020-09-25 10:06:47,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 10:06:51,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3171 [2020-09-25 10:06:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:06:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 10:06:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:51,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:06:51,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:51,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:51,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:06:51,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:51,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:06:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:51,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227101835] [2020-09-25 10:06:51,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:51,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:06:51,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49514090] [2020-09-25 10:06:51,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:06:51,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:06:51,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:51,354 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 10:06:53,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:53,516 INFO L93 Difference]: Finished difference Result 1677 states and 2045 transitions. [2020-09-25 10:06:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:06:53,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 10:06:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:53,525 INFO L225 Difference]: With dead ends: 1677 [2020-09-25 10:06:53,525 INFO L226 Difference]: Without dead ends: 1037 [2020-09-25 10:06:53,528 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 10:06:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-09-25 10:06:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 950. [2020-09-25 10:06:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 10:06:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1136 transitions. [2020-09-25 10:06:53,562 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1136 transitions. Word has length 141 [2020-09-25 10:06:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:53,562 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1136 transitions. [2020-09-25 10:06:53,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:06:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1136 transitions. [2020-09-25 10:06:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:06:53,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:53,573 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:06:53,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:53,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:53,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1279661441, now seen corresponding path program 1 times [2020-09-25 10:06:53,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:53,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36527510] [2020-09-25 10:06:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:06:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:06:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:58,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 10:06:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:06:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:58,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:58,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:06:58,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:58,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:06:58,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:06:58,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:58,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:58,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36527510] [2020-09-25 10:06:58,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:58,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:06:58,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639312950] [2020-09-25 10:06:58,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:06:58,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:58,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:06:58,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:58,928 INFO L87 Difference]: Start difference. First operand 950 states and 1136 transitions. Second operand 6 states. [2020-09-25 10:07:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:01,689 INFO L93 Difference]: Finished difference Result 3053 states and 3871 transitions. [2020-09-25 10:07:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:07:01,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 10:07:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:01,712 INFO L225 Difference]: With dead ends: 3053 [2020-09-25 10:07:01,712 INFO L226 Difference]: Without dead ends: 2127 [2020-09-25 10:07:01,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:07:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-09-25 10:07:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1383. [2020-09-25 10:07:01,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2020-09-25 10:07:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1637 transitions. [2020-09-25 10:07:01,804 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1637 transitions. Word has length 148 [2020-09-25 10:07:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:01,806 INFO L479 AbstractCegarLoop]: Abstraction has 1383 states and 1637 transitions. [2020-09-25 10:07:01,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:07:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1637 transitions. [2020-09-25 10:07:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 10:07:01,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:01,814 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:01,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:01,817 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:01,818 INFO L82 PathProgramCache]: Analyzing trace with hash -819909468, now seen corresponding path program 1 times [2020-09-25 10:07:01,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:01,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369828778] [2020-09-25 10:07:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:03,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:06,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 10:07:06,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:06,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:07:06,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:06,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 10:07:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:07:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:07,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:07:07,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:07,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:07,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:07,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:07:07,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:07:07,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:07,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:07,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 10:07:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 10:07:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:07,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:07:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:07:07,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369828778] [2020-09-25 10:07:07,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:07,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:07:07,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916051325] [2020-09-25 10:07:07,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:07:07,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:07,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:07:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:07:07,262 INFO L87 Difference]: Start difference. First operand 1383 states and 1637 transitions. Second operand 6 states. [2020-09-25 10:07:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:09,406 INFO L93 Difference]: Finished difference Result 3385 states and 4096 transitions. [2020-09-25 10:07:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:07:09,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-09-25 10:07:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:09,419 INFO L225 Difference]: With dead ends: 3385 [2020-09-25 10:07:09,420 INFO L226 Difference]: Without dead ends: 1877 [2020-09-25 10:07:09,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2020-09-25 10:07:09,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1808. [2020-09-25 10:07:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-25 10:07:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2158 transitions. [2020-09-25 10:07:09,493 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2158 transitions. Word has length 179 [2020-09-25 10:07:09,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:09,493 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2158 transitions. [2020-09-25 10:07:09,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:07:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2158 transitions. [2020-09-25 10:07:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 10:07:09,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:09,504 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:07:09,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:09,505 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:09,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:09,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1255486104, now seen corresponding path program 1 times [2020-09-25 10:07:09,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:09,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072153925] [2020-09-25 10:07:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:09,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:14,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 10:07:14,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:07:14,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:14,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:07:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-09-25 10:07:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:07:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:15,304 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-09-25 10:07:15,509 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-09-25 10:07:15,833 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 56 [2020-09-25 10:07:16,199 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2020-09-25 10:07:16,544 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 59 [2020-09-25 10:07:16,844 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 53 [2020-09-25 10:07:17,161 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2020-09-25 10:07:17,447 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2020-09-25 10:07:17,725 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-09-25 10:07:18,087 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2020-09-25 10:07:18,335 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 39 [2020-09-25 10:07:18,537 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 30 [2020-09-25 10:07:18,757 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 34 [2020-09-25 10:07:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:07:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:18,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:18,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:07:18,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:07:18,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:18,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:07:18,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 10:07:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:19,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:07:19,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:07:19,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:19,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 10:07:19,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072153925] [2020-09-25 10:07:19,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:19,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:07:19,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82654462] [2020-09-25 10:07:19,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:07:19,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:19,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:07:19,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:07:19,562 INFO L87 Difference]: Start difference. First operand 1808 states and 2158 transitions. Second operand 21 states. [2020-09-25 10:07:20,464 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-25 10:07:20,712 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-25 10:07:21,410 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 119 [2020-09-25 10:07:21,589 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-09-25 10:07:21,927 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-09-25 10:07:22,465 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 118 [2020-09-25 10:07:23,015 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 123 [2020-09-25 10:07:23,375 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-09-25 10:07:23,926 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 118 [2020-09-25 10:07:24,190 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 10:07:24,489 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 100