/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:04,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:04,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:04,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:04,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:04,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:04,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:05,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:05,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:05,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:05,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:05,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:05,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:05,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:05,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:05,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:05,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:05,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:05,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:05,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:05,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:05,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:05,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:05,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:05,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:05,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:05,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:05,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:05,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:05,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:05,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:05,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:05,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:05,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:05,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:05,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:05,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:05,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:05,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:05,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:05,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:05,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:01:05,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:05,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:05,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:05,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:05,070 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:05,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:05,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:05,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:05,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:05,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:05,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:05,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:05,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:05,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:05,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:05,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:05,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:05,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:05,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:05,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:05,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:05,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:05,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:05,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:05,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:05,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:05,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:05,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:05,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:05,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:01:05,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:05,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:05,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:05,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:05,559 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:05,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 09:01:05,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b79471b/d1e9911fe14d463ca483be91ef99c47f/FLAGb9d718c00 [2020-09-25 09:01:06,334 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:06,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 09:01:06,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b79471b/d1e9911fe14d463ca483be91ef99c47f/FLAGb9d718c00 [2020-09-25 09:01:06,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b79471b/d1e9911fe14d463ca483be91ef99c47f [2020-09-25 09:01:06,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:06,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:06,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:06,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:06,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:06,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:06" (1/1) ... [2020-09-25 09:01:06,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c7438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:06, skipping insertion in model container [2020-09-25 09:01:06,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:06" (1/1) ... [2020-09-25 09:01:06,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:06,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:07,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:07,158 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:07,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:07,399 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:07,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07 WrapperNode [2020-09-25 09:01:07,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:07,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:07,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:07,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:07,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:07,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:07,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:07,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:07,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:08,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:08,985 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:08,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:08 BoogieIcfgContainer [2020-09-25 09:01:08,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:08,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:08,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:09,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:09,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:06" (1/3) ... [2020-09-25 09:01:09,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1330ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:09, skipping insertion in model container [2020-09-25 09:01:09,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (2/3) ... [2020-09-25 09:01:09,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1330ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:09, skipping insertion in model container [2020-09-25 09:01:09,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:08" (3/3) ... [2020-09-25 09:01:09,005 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 09:01:09,018 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:09,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:09,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:09,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:09,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:09,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:09,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:09,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:09,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:09,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:09,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 09:01:09,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:09,152 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] [2020-09-25 09:01:09,152 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:09,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 09:01:09,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:09,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658238283] [2020-09-25 09:01:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:14,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:01:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:01:14,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:14,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:01:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:01:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:14,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:14,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:01:14,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:14,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:14,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:14,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658238283] [2020-09-25 09:01:14,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:14,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:14,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66786326] [2020-09-25 09:01:14,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:14,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:14,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:14,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:14,864 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:17,020 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:01:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:17,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 09:01:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:17,050 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:01:17,050 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:01:17,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:01:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:01:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:01:17,165 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 09:01:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:17,166 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:01:17,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:01:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:01:17,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:17,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:17,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:17,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 09:01:17,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:17,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979533417] [2020-09-25 09:01:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:22,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:01:22,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:01:22,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:22,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:01:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:22,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:22,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:22,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:22,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:01:22,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:22,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:01:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:22,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:01:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:22,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:22,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979533417] [2020-09-25 09:01:22,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:22,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:22,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791161286] [2020-09-25 09:01:22,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:22,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:22,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:22,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:22,474 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 09:01:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:25,209 INFO L93 Difference]: Finished difference Result 1660 states and 2153 transitions. [2020-09-25 09:01:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:01:25,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 09:01:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:25,227 INFO L225 Difference]: With dead ends: 1660 [2020-09-25 09:01:25,227 INFO L226 Difference]: Without dead ends: 1081 [2020-09-25 09:01:25,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:01:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-25 09:01:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 906. [2020-09-25 09:01:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-09-25 09:01:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1105 transitions. [2020-09-25 09:01:25,330 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1105 transitions. Word has length 175 [2020-09-25 09:01:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:25,332 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1105 transitions. [2020-09-25 09:01:25,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1105 transitions. [2020-09-25 09:01:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 09:01:25,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:25,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:25,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:25,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 09:01:25,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:25,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089512130] [2020-09-25 09:01:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 09:01:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 09:01:30,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:30,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:30,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:30,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:01:30,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:30,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:30,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:30,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:01:30,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:30,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:30,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089512130] [2020-09-25 09:01:30,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:30,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:30,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11274663] [2020-09-25 09:01:30,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:30,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:30,762 INFO L87 Difference]: Start difference. First operand 906 states and 1105 transitions. Second operand 7 states. [2020-09-25 09:01:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:33,132 INFO L93 Difference]: Finished difference Result 2571 states and 3282 transitions. [2020-09-25 09:01:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:33,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 09:01:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:33,148 INFO L225 Difference]: With dead ends: 2571 [2020-09-25 09:01:33,149 INFO L226 Difference]: Without dead ends: 1689 [2020-09-25 09:01:33,155 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 [2020-09-25 09:01:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-09-25 09:01:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1566. [2020-09-25 09:01:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-25 09:01:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1934 transitions. [2020-09-25 09:01:33,238 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1934 transitions. Word has length 176 [2020-09-25 09:01:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:33,239 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1934 transitions. [2020-09-25 09:01:33,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1934 transitions. [2020-09-25 09:01:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 09:01:33,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:33,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:33,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:33,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:33,253 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 09:01:33,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:33,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304605908] [2020-09-25 09:01:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:01:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:01:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 09:01:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:38,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:38,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 09:01:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:38,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304605908] [2020-09-25 09:01:38,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:38,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:38,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343612435] [2020-09-25 09:01:38,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:38,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:38,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:38,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:38,738 INFO L87 Difference]: Start difference. First operand 1566 states and 1934 transitions. Second operand 6 states. [2020-09-25 09:01:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:40,717 INFO L93 Difference]: Finished difference Result 4186 states and 5385 transitions. [2020-09-25 09:01:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:40,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-09-25 09:01:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:40,737 INFO L225 Difference]: With dead ends: 4186 [2020-09-25 09:01:40,737 INFO L226 Difference]: Without dead ends: 2644 [2020-09-25 09:01:40,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-09-25 09:01:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2426. [2020-09-25 09:01:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2020-09-25 09:01:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3071 transitions. [2020-09-25 09:01:40,829 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3071 transitions. Word has length 183 [2020-09-25 09:01:40,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:40,831 INFO L479 AbstractCegarLoop]: Abstraction has 2426 states and 3071 transitions. [2020-09-25 09:01:40,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3071 transitions. [2020-09-25 09:01:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 09:01:40,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:40,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:40,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:40,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:40,844 INFO L82 PathProgramCache]: Analyzing trace with hash -422908273, now seen corresponding path program 1 times [2020-09-25 09:01:40,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:40,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871400018] [2020-09-25 09:01:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:45,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 09:01:45,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 09:01:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:01:45,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:45,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:01:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:01:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:45,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:01:46,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:01:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:01:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:01:46,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 09:01:46,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:01:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:46,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871400018] [2020-09-25 09:01:46,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:46,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:46,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554275012] [2020-09-25 09:01:46,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:46,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:46,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:46,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:46,479 INFO L87 Difference]: Start difference. First operand 2426 states and 3071 transitions. Second operand 7 states. [2020-09-25 09:01:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:50,250 INFO L93 Difference]: Finished difference Result 6172 states and 8622 transitions. [2020-09-25 09:01:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:50,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 09:01:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:50,286 INFO L225 Difference]: With dead ends: 6172 [2020-09-25 09:01:50,286 INFO L226 Difference]: Without dead ends: 3770 [2020-09-25 09:01:50,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2020-09-25 09:01:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3255. [2020-09-25 09:01:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3255 states. [2020-09-25 09:01:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3255 states to 3255 states and 4055 transitions. [2020-09-25 09:01:50,440 INFO L78 Accepts]: Start accepts. Automaton has 3255 states and 4055 transitions. Word has length 205 [2020-09-25 09:01:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:50,440 INFO L479 AbstractCegarLoop]: Abstraction has 3255 states and 4055 transitions. [2020-09-25 09:01:50,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3255 states and 4055 transitions. [2020-09-25 09:01:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 09:01:50,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:50,457 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-09-25 09:01:50,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:50,457 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:50,458 INFO L82 PathProgramCache]: Analyzing trace with hash -102390325, now seen corresponding path program 1 times [2020-09-25 09:01:50,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:50,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425495744] [2020-09-25 09:01:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking...