/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:31,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:31,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:31,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:31,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:31,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:31,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:31,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:31,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:31,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:31,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:31,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:31,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:31,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:31,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:31,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:31,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:31,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:31,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:31,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:31,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:31,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:31,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:31,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:31,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:31,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:31,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:31,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:31,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:31,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:31,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:31,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:31,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:31,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:31,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:31,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:31,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:31,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:31,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:31,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:31,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:31,962 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 05:39:31,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:31,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:31,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:31,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:31,989 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:31,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:31,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:31,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:31,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:31,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:31,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:31,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:31,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:31,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:31,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:31,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:31,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:31,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:31,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:31,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:31,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:31,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:31,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:31,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:31,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:31,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:31,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:31,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:31,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:31,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:39:32,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:32,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:32,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:32,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:32,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:32,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 05:39:32,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaf3df13c/d1720fedc5a74807bcb5bc106213cf78/FLAGae2f56871 [2020-09-25 05:39:33,192 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:33,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 05:39:33,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaf3df13c/d1720fedc5a74807bcb5bc106213cf78/FLAGae2f56871 [2020-09-25 05:39:33,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaf3df13c/d1720fedc5a74807bcb5bc106213cf78 [2020-09-25 05:39:33,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:33,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:33,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:33,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:33,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:33,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:33" (1/1) ... [2020-09-25 05:39:33,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e0ef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:33, skipping insertion in model container [2020-09-25 05:39:33,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:33" (1/1) ... [2020-09-25 05:39:33,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:33,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:33,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:34,000 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:34,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:34,250 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:34,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34 WrapperNode [2020-09-25 05:39:34,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:34,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:34,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:34,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:34,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (1/1) ... [2020-09-25 05:39:34,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:34,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:34,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:34,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:34,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (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 05:39:34,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:34,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:34,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:34,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:35,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:35,833 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:35,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:35 BoogieIcfgContainer [2020-09-25 05:39:35,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:35,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:35,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:35,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:35,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:33" (1/3) ... [2020-09-25 05:39:35,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c9e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:35, skipping insertion in model container [2020-09-25 05:39:35,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:34" (2/3) ... [2020-09-25 05:39:35,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c9e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:35, skipping insertion in model container [2020-09-25 05:39:35,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:35" (3/3) ... [2020-09-25 05:39:35,858 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 05:39:35,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:35,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:35,902 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:35,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:35,937 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:35,937 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:35,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:35,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:35,938 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:35,938 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:35,938 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 05:39:35,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:35,981 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] [2020-09-25 05:39:35,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:35,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 05:39:36,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:36,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994094453] [2020-09-25 05:39:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 05:39:37,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-09-25 05:39:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:39:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:37,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:37,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:39:37,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:37,873 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 05:39:37,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994094453] [2020-09-25 05:39:37,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:37,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:37,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869309324] [2020-09-25 05:39:37,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:37,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:37,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:37,907 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:40,016 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 05:39:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:40,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 05:39:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:40,041 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 05:39:40,041 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 05:39:40,054 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 05:39:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 05:39:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 05:39:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:39:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:39:40,149 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 61 [2020-09-25 05:39:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:40,150 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:39:40,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:39:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:39:40,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:40,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:40,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:40,161 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:40,162 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 05:39:40,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:40,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412227900] [2020-09-25 05:39:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 05:39:45,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:39:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:45,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:39:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:39:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 05:39:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:45,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:45,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:39:45,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:45,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:39:45,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:45,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:45,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:45,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:45,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 05:39:45,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:45,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:46,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412227900] [2020-09-25 05:39:46,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:46,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:39:46,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862580021] [2020-09-25 05:39:46,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:39:46,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:46,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:39:46,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:39:46,015 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 10 states. [2020-09-25 05:39:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:49,221 INFO L93 Difference]: Finished difference Result 1663 states and 2149 transitions. [2020-09-25 05:39:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:49,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-09-25 05:39:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:49,234 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 05:39:49,234 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 05:39:49,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:39:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 05:39:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 05:39:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 05:39:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 05:39:49,285 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 144 [2020-09-25 05:39:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:49,286 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 05:39:49,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:39:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 05:39:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:39:49,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:49,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:49,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:49,291 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:49,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2467362, now seen corresponding path program 1 times [2020-09-25 05:39:49,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:49,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764812896] [2020-09-25 05:39:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:52,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 05:39:52,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3166 [2020-09-25 05:39:52,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:52,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:39:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:39:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:52,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:52,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 05:39:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:52,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:52,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764812896] [2020-09-25 05:39:52,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:52,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:52,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823306260] [2020-09-25 05:39:52,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:52,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:52,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:52,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:52,724 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 5 states. [2020-09-25 05:39:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:54,114 INFO L93 Difference]: Finished difference Result 1652 states and 2082 transitions. [2020-09-25 05:39:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:54,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 05:39:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:54,125 INFO L225 Difference]: With dead ends: 1652 [2020-09-25 05:39:54,125 INFO L226 Difference]: Without dead ends: 1650 [2020-09-25 05:39:54,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-09-25 05:39:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1190. [2020-09-25 05:39:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 05:39:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1499 transitions. [2020-09-25 05:39:54,172 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1499 transitions. Word has length 144 [2020-09-25 05:39:54,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:54,172 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1499 transitions. [2020-09-25 05:39:54,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1499 transitions. [2020-09-25 05:39:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 05:39:54,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:54,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:54,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:54,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 05:39:54,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:54,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557704909] [2020-09-25 05:39:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 05:39:57,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:57,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3556 [2020-09-25 05:39:57,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 05:39:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:57,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:39:57,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:57,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:58,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 05:39:58,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:58,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:58,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557704909] [2020-09-25 05:39:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:58,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:58,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888700336] [2020-09-25 05:39:58,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:58,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:58,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:58,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:58,090 INFO L87 Difference]: Start difference. First operand 1190 states and 1499 transitions. Second operand 6 states. [2020-09-25 05:40:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:00,771 INFO L93 Difference]: Finished difference Result 3204 states and 4274 transitions. [2020-09-25 05:40:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:00,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-09-25 05:40:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:00,784 INFO L225 Difference]: With dead ends: 3204 [2020-09-25 05:40:00,785 INFO L226 Difference]: Without dead ends: 2029 [2020-09-25 05:40:00,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 05:40:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-09-25 05:40:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1812. [2020-09-25 05:40:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2020-09-25 05:40:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2413 transitions. [2020-09-25 05:40:00,869 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2413 transitions. Word has length 150 [2020-09-25 05:40:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:00,870 INFO L479 AbstractCegarLoop]: Abstraction has 1812 states and 2413 transitions. [2020-09-25 05:40:00,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2413 transitions. [2020-09-25 05:40:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 05:40:00,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:00,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:00,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:00,875 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:00,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:00,875 INFO L82 PathProgramCache]: Analyzing trace with hash -768352162, now seen corresponding path program 1 times [2020-09-25 05:40:00,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:00,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443113435] [2020-09-25 05:40:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 05:40:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:40:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:05,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:40:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:40:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:40:06,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:06,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:40:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:40:06,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:06,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:06,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443113435] [2020-09-25 05:40:06,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:06,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:06,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275516929] [2020-09-25 05:40:06,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:06,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:06,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:06,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:06,198 INFO L87 Difference]: Start difference. First operand 1812 states and 2413 transitions. Second operand 5 states. [2020-09-25 05:40:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:08,268 INFO L93 Difference]: Finished difference Result 4690 states and 6527 transitions. [2020-09-25 05:40:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:08,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 05:40:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:08,285 INFO L225 Difference]: With dead ends: 4690 [2020-09-25 05:40:08,286 INFO L226 Difference]: Without dead ends: 2893 [2020-09-25 05:40:08,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-09-25 05:40:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2721. [2020-09-25 05:40:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2721 states. [2020-09-25 05:40:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3674 transitions. [2020-09-25 05:40:08,392 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3674 transitions. Word has length 169 [2020-09-25 05:40:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:08,393 INFO L479 AbstractCegarLoop]: Abstraction has 2721 states and 3674 transitions. [2020-09-25 05:40:08,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3674 transitions. [2020-09-25 05:40:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 05:40:08,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:08,411 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, 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, 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] [2020-09-25 05:40:08,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:08,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1899467345, now seen corresponding path program 1 times [2020-09-25 05:40:08,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:08,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895855031] [2020-09-25 05:40:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:40:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:40:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:13,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:40:13,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:40:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 05:40:13,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:13,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 05:40:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 05:40:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:40:13,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 05:40:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 90 proven. 85 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:40:13,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895855031] [2020-09-25 05:40:13,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:13,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:13,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022737542] [2020-09-25 05:40:13,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:13,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:13,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:13,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:13,936 INFO L87 Difference]: Start difference. First operand 2721 states and 3674 transitions. Second operand 7 states. [2020-09-25 05:40:16,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:16,137 INFO L93 Difference]: Finished difference Result 7075 states and 10968 transitions. [2020-09-25 05:40:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:40:16,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-09-25 05:40:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:16,177 INFO L225 Difference]: With dead ends: 7075 [2020-09-25 05:40:16,178 INFO L226 Difference]: Without dead ends: 4369 [2020-09-25 05:40:16,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:40:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2020-09-25 05:40:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3513. [2020-09-25 05:40:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-09-25 05:40:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4630 transitions. [2020-09-25 05:40:16,370 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4630 transitions. Word has length 264 [2020-09-25 05:40:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:16,372 INFO L479 AbstractCegarLoop]: Abstraction has 3513 states and 4630 transitions. [2020-09-25 05:40:16,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4630 transitions. [2020-09-25 05:40:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-09-25 05:40:16,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:16,384 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, 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] [2020-09-25 05:40:16,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:40:16,385 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash 434341334, now seen corresponding path program 1 times [2020-09-25 05:40:16,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:16,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647176002] [2020-09-25 05:40:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:40:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:40:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:21,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:21,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:21,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:40:21,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:40:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 05:40:21,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 05:40:21,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:40:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:21,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647176002] [2020-09-25 05:40:21,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:21,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:21,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404554412] [2020-09-25 05:40:21,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:21,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:21,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:21,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:21,934 INFO L87 Difference]: Start difference. First operand 3513 states and 4630 transitions. Second operand 7 states.