/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:28:15,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:28:15,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:28:15,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:28:15,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:28:15,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:28:15,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:28:15,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:28:15,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:28:15,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:28:15,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:28:15,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:28:15,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:28:15,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:28:15,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:28:15,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:28:15,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:28:15,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:28:15,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:28:15,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:28:15,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:28:15,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:28:15,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:28:15,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:28:15,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:28:15,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:28:15,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:28:15,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:28:15,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:28:15,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 19:28:15,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:28:15,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:28:15,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:28:15,962 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 [2020-09-24 19:28:15,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:28:15,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:28:15,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:28:15,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:28:15,993 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:28:15,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:28:15,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:28:15,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:28:15,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:28:15,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:28:15,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:28:15,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:28:15,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:28:15,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:28:15,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:28:15,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:28:15,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:28:15,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:28:15,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:28:15,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:28:15,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:28:15,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:28:15,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:28:15,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:28:15,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:28:16,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:28:16,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:28:16,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:28:16,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:28:16,002 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:28:16,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:28:16,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:28:16,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:28:16,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:28:16,526 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:28:16,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-24 19:28:16,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e3f6c9a/34da2cb3a6f44b8b92e2634794815c1f/FLAG2897fa8b0 [2020-09-24 19:28:17,301 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:28:17,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-24 19:28:17,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e3f6c9a/34da2cb3a6f44b8b92e2634794815c1f/FLAG2897fa8b0 [2020-09-24 19:28:17,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e3f6c9a/34da2cb3a6f44b8b92e2634794815c1f [2020-09-24 19:28:17,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:28:17,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:28:17,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:17,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:28:17,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:28:17,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:17" (1/1) ... [2020-09-24 19:28:17,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:17, skipping insertion in model container [2020-09-24 19:28:17,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:17" (1/1) ... [2020-09-24 19:28:17,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:28:17,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:28:18,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:18,165 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:28:18,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:18,418 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:28:18,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18 WrapperNode [2020-09-24 19:28:18,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:18,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:28:18,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:28:18,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:28:18,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (1/1) ... [2020-09-24 19:28:18,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:28:18,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:28:18,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:28:18,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:28:18,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (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 [2020-09-24 19:28:18,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:28:18,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:28:18,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:28:18,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:28:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:28:18,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:28:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:28:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:28:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:28:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:28:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:28:20,023 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:28:20,024 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:28:20,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:20 BoogieIcfgContainer [2020-09-24 19:28:20,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:28:20,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:28:20,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:28:20,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:28:20,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:28:17" (1/3) ... [2020-09-24 19:28:20,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:20, skipping insertion in model container [2020-09-24 19:28:20,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:18" (2/3) ... [2020-09-24 19:28:20,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:20, skipping insertion in model container [2020-09-24 19:28:20,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:20" (3/3) ... [2020-09-24 19:28:20,051 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-24 19:28:20,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:28:20,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:28:20,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:28:20,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:28:20,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:28:20,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:28:20,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:28:20,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:28:20,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:28:20,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:28:20,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:28:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 19:28:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 19:28:20,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:20,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:20,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-24 19:28:20,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:20,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-24 19:28:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:21,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:21,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 19:28:21,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:28:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:28:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-24 19:28:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:28:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:21,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:21,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:28:21,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:28:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:21,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-24 19:28:21,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:21,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:28:21,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828324473] [2020-09-24 19:28:21,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:28:21,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:21,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:28:21,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:28:21,900 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 19:28:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:24,249 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-24 19:28:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:28:24,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-24 19:28:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:24,282 INFO L225 Difference]: With dead ends: 1386 [2020-09-24 19:28:24,283 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 19:28:24,295 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 [2020-09-24 19:28:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 19:28:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-24 19:28:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-24 19:28:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-24 19:28:24,431 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-24 19:28:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:24,433 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-24 19:28:24,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:28:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-24 19:28:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 19:28:24,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:24,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:24,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:28:24,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-24 19:28:24,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:24,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776703588] [2020-09-24 19:28:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:24,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:25,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:25,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 19:28:25,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:28:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:28:25,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 19:28:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-24 19:28:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:25,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:25,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:25,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:28:25,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:25,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:25,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:28:25,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:25,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:28:25,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:28:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:25,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776703588] [2020-09-24 19:28:25,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:25,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:28:25,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538727788] [2020-09-24 19:28:25,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:28:25,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:28:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:28:25,781 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-24 19:28:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:27,780 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-24 19:28:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:28:27,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-24 19:28:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:27,789 INFO L225 Difference]: With dead ends: 1757 [2020-09-24 19:28:27,789 INFO L226 Difference]: Without dead ends: 1046 [2020-09-24 19:28:27,793 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 [2020-09-24 19:28:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-24 19:28:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-24 19:28:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-24 19:28:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-24 19:28:27,843 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-24 19:28:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:27,843 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-24 19:28:27,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:28:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-24 19:28:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 19:28:27,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:27,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:27,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:28:27,852 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-24 19:28:27,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:27,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336821702] [2020-09-24 19:28:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:28,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 19:28:28,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:28:28,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 19:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 19:28:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:28:29,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:28:29,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:29,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:29,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:28:29,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:28:29,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:28:29,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:29,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336821702] [2020-09-24 19:28:29,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:29,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:28:29,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509134260] [2020-09-24 19:28:29,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:28:29,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:29,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:28:29,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:28:29,181 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 7 states. [2020-09-24 19:28:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:31,680 INFO L93 Difference]: Finished difference Result 2946 states and 3847 transitions. [2020-09-24 19:28:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:28:31,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-09-24 19:28:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:31,700 INFO L225 Difference]: With dead ends: 2946 [2020-09-24 19:28:31,700 INFO L226 Difference]: Without dead ends: 1932 [2020-09-24 19:28:31,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:28:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-09-24 19:28:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1729. [2020-09-24 19:28:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1729 states. [2020-09-24 19:28:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2212 transitions. [2020-09-24 19:28:31,798 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2212 transitions. Word has length 198 [2020-09-24 19:28:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:31,799 INFO L479 AbstractCegarLoop]: Abstraction has 1729 states and 2212 transitions. [2020-09-24 19:28:31,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:28:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2212 transitions. [2020-09-24 19:28:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-24 19:28:31,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:31,811 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:31,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:28:31,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash 855673452, now seen corresponding path program 1 times [2020-09-24 19:28:31,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:31,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289013353] [2020-09-24 19:28:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:32,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:32,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 19:28:32,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:28:32,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:28:32,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:32,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:32,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 19:28:32,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:28:32,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:33,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:28:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:33,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:28:33,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:28:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:28:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:28:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:28:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:28:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:28:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:28:33,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289013353] [2020-09-24 19:28:33,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:33,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:28:33,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284791763] [2020-09-24 19:28:33,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:28:33,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:28:33,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:28:33,279 INFO L87 Difference]: Start difference. First operand 1729 states and 2212 transitions. Second operand 7 states. [2020-09-24 19:28:37,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:37,182 INFO L93 Difference]: Finished difference Result 4462 states and 5847 transitions. [2020-09-24 19:28:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:28:37,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-09-24 19:28:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:37,202 INFO L225 Difference]: With dead ends: 4462 [2020-09-24 19:28:37,203 INFO L226 Difference]: Without dead ends: 2755 [2020-09-24 19:28:37,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:28:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2020-09-24 19:28:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2601. [2020-09-24 19:28:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-09-24 19:28:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3224 transitions. [2020-09-24 19:28:37,303 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3224 transitions. Word has length 220 [2020-09-24 19:28:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:37,303 INFO L479 AbstractCegarLoop]: Abstraction has 2601 states and 3224 transitions. [2020-09-24 19:28:37,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:28:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3224 transitions. [2020-09-24 19:28:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 19:28:37,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:37,316 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:37,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:28:37,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-24 19:28:37,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:37,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066841535] [2020-09-24 19:28:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:38,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-24 19:28:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:28:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:28:38,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:28:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:28:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:38,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:28:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:38,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:38,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:28:38,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:28:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:28:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:28:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:28:38,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 19:28:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:28:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:28:38,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066841535] [2020-09-24 19:28:38,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:38,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:28:38,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942050371] [2020-09-24 19:28:38,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:28:38,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:38,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:28:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:28:38,776 INFO L87 Difference]: Start difference. First operand 2601 states and 3224 transitions. Second operand 7 states. [2020-09-24 19:28:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:41,244 INFO L93 Difference]: Finished difference Result 7452 states and 10145 transitions. [2020-09-24 19:28:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:28:41,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-24 19:28:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:41,329 INFO L225 Difference]: With dead ends: 7452 [2020-09-24 19:28:41,329 INFO L226 Difference]: Without dead ends: 4883 [2020-09-24 19:28:41,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:28:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2020-09-24 19:28:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4488. [2020-09-24 19:28:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2020-09-24 19:28:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 5678 transitions. [2020-09-24 19:28:41,494 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 5678 transitions. Word has length 227 [2020-09-24 19:28:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:41,495 INFO L479 AbstractCegarLoop]: Abstraction has 4488 states and 5678 transitions. [2020-09-24 19:28:41,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:28:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 5678 transitions. [2020-09-24 19:28:41,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-24 19:28:41,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:41,514 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:41,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:28:41,515 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1967485839, now seen corresponding path program 1 times [2020-09-24 19:28:41,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:41,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729050948] [2020-09-24 19:28:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:42,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:42,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-24 19:28:42,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:28:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:28:42,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 19:28:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:28:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:42,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:42,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:42,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:42,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:28:42,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:42,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:42,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:28:42,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 19:28:42,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:28:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:28:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:42,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:28:42,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 19:28:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:28:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:28:43,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729050948] [2020-09-24 19:28:43,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:43,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:28:43,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728660800] [2020-09-24 19:28:43,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:28:43,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:43,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:28:43,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:28:43,037 INFO L87 Difference]: Start difference. First operand 4488 states and 5678 transitions. Second operand 7 states. [2020-09-24 19:28:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:46,121 INFO L93 Difference]: Finished difference Result 8689 states and 11161 transitions. [2020-09-24 19:28:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:28:46,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-24 19:28:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:46,144 INFO L225 Difference]: With dead ends: 8689 [2020-09-24 19:28:46,145 INFO L226 Difference]: Without dead ends: 4233 [2020-09-24 19:28:46,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:28:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2020-09-24 19:28:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3677. [2020-09-24 19:28:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2020-09-24 19:28:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 4292 transitions. [2020-09-24 19:28:46,271 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 4292 transitions. Word has length 242 [2020-09-24 19:28:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:46,272 INFO L479 AbstractCegarLoop]: Abstraction has 3677 states and 4292 transitions. [2020-09-24 19:28:46,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:28:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 4292 transitions. [2020-09-24 19:28:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-24 19:28:46,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:46,289 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:46,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:28:46,289 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:46,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2097267617, now seen corresponding path program 1 times [2020-09-24 19:28:46,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:46,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882479297] [2020-09-24 19:28:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:47,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-24 19:28:47,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:28:47,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:28:47,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 19:28:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:28:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:47,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:28:47,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:47,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:28:47,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:28:47,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:28:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:28:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:28:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 19:28:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 19:28:47,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 19:28:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:28:47,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882479297] [2020-09-24 19:28:47,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:47,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:28:47,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476217634] [2020-09-24 19:28:47,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:28:47,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:28:47,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:28:47,827 INFO L87 Difference]: Start difference. First operand 3677 states and 4292 transitions. Second operand 7 states. [2020-09-24 19:28:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:50,508 INFO L93 Difference]: Finished difference Result 8133 states and 9480 transitions. [2020-09-24 19:28:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:28:50,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-24 19:28:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:50,530 INFO L225 Difference]: With dead ends: 8133 [2020-09-24 19:28:50,530 INFO L226 Difference]: Without dead ends: 4148 [2020-09-24 19:28:50,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:28:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2020-09-24 19:28:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3094. [2020-09-24 19:28:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3094 states. [2020-09-24 19:28:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3442 transitions. [2020-09-24 19:28:50,630 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3442 transitions. Word has length 246 [2020-09-24 19:28:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:50,631 INFO L479 AbstractCegarLoop]: Abstraction has 3094 states and 3442 transitions. [2020-09-24 19:28:50,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:28:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3442 transitions. [2020-09-24 19:28:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-24 19:28:50,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:50,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:50,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:28:50,643 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash -616383950, now seen corresponding path program 1 times [2020-09-24 19:28:50,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:50,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647785971] [2020-09-24 19:28:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-24 19:28:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:28:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:28:51,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:28:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:28:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:51,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:51,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:28:51,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:28:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:51,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:52,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:52,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:28:52,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 19:28:52,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:28:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:52,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647785971] [2020-09-24 19:28:52,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:52,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:28:52,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629895074] [2020-09-24 19:28:52,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:28:52,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:28:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:28:52,275 INFO L87 Difference]: Start difference. First operand 3094 states and 3442 transitions. Second operand 8 states. [2020-09-24 19:28:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:55,107 INFO L93 Difference]: Finished difference Result 7056 states and 7893 transitions. [2020-09-24 19:28:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:28:55,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-09-24 19:28:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:55,127 INFO L225 Difference]: With dead ends: 7056 [2020-09-24 19:28:55,127 INFO L226 Difference]: Without dead ends: 3607 [2020-09-24 19:28:55,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:28:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2020-09-24 19:28:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3574. [2020-09-24 19:28:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-09-24 19:28:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 3809 transitions. [2020-09-24 19:28:55,230 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 3809 transitions. Word has length 248 [2020-09-24 19:28:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:55,231 INFO L479 AbstractCegarLoop]: Abstraction has 3574 states and 3809 transitions. [2020-09-24 19:28:55,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:28:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 3809 transitions. [2020-09-24 19:28:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-24 19:28:55,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:55,244 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:55,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:28:55,244 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1929999808, now seen corresponding path program 1 times [2020-09-24 19:28:55,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:55,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480207802] [2020-09-24 19:28:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:56,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-24 19:28:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:28:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:28:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 19:28:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-24 19:28:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:28:56,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:28:56,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:28:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:56,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:56,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:28:56,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:28:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:28:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:28:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:28:57,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:28:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 19:28:57,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:28:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:28:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 116 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 19:28:57,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480207802] [2020-09-24 19:28:57,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:57,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:28:57,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067079901] [2020-09-24 19:28:57,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:28:57,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:57,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:28:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:28:57,780 INFO L87 Difference]: Start difference. First operand 3574 states and 3809 transitions. Second operand 11 states. [2020-09-24 19:28:57,971 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-24 19:29:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:00,582 INFO L93 Difference]: Finished difference Result 3820 states and 4058 transitions. [2020-09-24 19:29:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 19:29:00,582 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 291 [2020-09-24 19:29:00,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:00,597 INFO L225 Difference]: With dead ends: 3820 [2020-09-24 19:29:00,597 INFO L226 Difference]: Without dead ends: 3552 [2020-09-24 19:29:00,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:29:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-09-24 19:29:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3550. [2020-09-24 19:29:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3550 states. [2020-09-24 19:29:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 3780 transitions. [2020-09-24 19:29:00,682 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 3780 transitions. Word has length 291 [2020-09-24 19:29:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:00,683 INFO L479 AbstractCegarLoop]: Abstraction has 3550 states and 3780 transitions. [2020-09-24 19:29:00,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:29:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 3780 transitions. [2020-09-24 19:29:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-09-24 19:29:00,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:00,699 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:00,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:00,699 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1217092952, now seen corresponding path program 1 times [2020-09-24 19:29:00,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:00,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199576637] [2020-09-24 19:29:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:01,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:01,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-09-24 19:29:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-24 19:29:01,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:29:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:29:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:29:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:29:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:29:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:01,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:01,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:29:01,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:01,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:29:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:29:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:29:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:02,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:29:02,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:02,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-24 19:29:02,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:29:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 19:29:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:29:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:29:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 19:29:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 19:29:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:02,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:02,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:29:02,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:29:02,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 19:29:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 166 proven. 61 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-24 19:29:02,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199576637] [2020-09-24 19:29:02,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:02,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:02,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516097426] [2020-09-24 19:29:02,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:02,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:02,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:02,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:02,351 INFO L87 Difference]: Start difference. First operand 3550 states and 3780 transitions. Second operand 7 states. [2020-09-24 19:29:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:04,072 INFO L93 Difference]: Finished difference Result 7056 states and 7522 transitions. [2020-09-24 19:29:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:04,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-09-24 19:29:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:04,081 INFO L225 Difference]: With dead ends: 7056 [2020-09-24 19:29:04,082 INFO L226 Difference]: Without dead ends: 3482 [2020-09-24 19:29:04,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2020-09-24 19:29:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3326. [2020-09-24 19:29:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3326 states. [2020-09-24 19:29:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 3482 transitions. [2020-09-24 19:29:04,154 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 3482 transitions. Word has length 336 [2020-09-24 19:29:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:04,155 INFO L479 AbstractCegarLoop]: Abstraction has 3326 states and 3482 transitions. [2020-09-24 19:29:04,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 3482 transitions. [2020-09-24 19:29:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-09-24 19:29:04,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:04,168 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:04,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:04,169 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:04,169 INFO L82 PathProgramCache]: Analyzing trace with hash 124530160, now seen corresponding path program 1 times [2020-09-24 19:29:04,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:04,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633156171] [2020-09-24 19:29:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-09-24 19:29:05,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:29:05,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-24 19:29:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:29:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:29:05,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:05,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:29:05,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:29:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:29:05,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:29:05,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:29:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:29:05,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:05,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:29:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:29:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:05,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 19:29:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:29:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:29:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:29:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:05,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 19:29:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:05,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:29:05,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:05,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 19:29:05,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:29:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-24 19:29:05,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633156171] [2020-09-24 19:29:05,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:05,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:05,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148819930] [2020-09-24 19:29:05,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:05,777 INFO L87 Difference]: Start difference. First operand 3326 states and 3482 transitions. Second operand 7 states.