/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:09,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:09,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:09,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:09,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:09,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:09,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:09,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:09,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:09,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:09,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:09,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:09,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:09,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:09,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:09,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:09,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:09,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:09,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:09,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:09,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:09,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:09,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:09,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:09,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:09,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:09,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:09,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:09,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:09,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:09,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:09,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:09,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:09,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:09,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:09,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:09,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:09,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:09,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:09,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:09,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:09,538 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 06:45:09,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:09,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:09,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:09,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:09,593 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:09,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:09,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:09,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:09,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:09,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:09,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:09,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:09,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:09,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:09,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:09,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:09,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:09,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:09,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:09,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:09,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:09,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:09,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:09,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:09,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:09,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:09,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:09,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:09,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:09,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:45:10,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:10,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:10,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:10,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:10,076 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:10,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 06:45:10,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed0d3178b/bfe0f4d2c97948dfad5a875d5e6d5416/FLAGab9347efc [2020-09-25 06:45:10,803 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:10,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 06:45:10,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed0d3178b/bfe0f4d2c97948dfad5a875d5e6d5416/FLAGab9347efc [2020-09-25 06:45:10,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed0d3178b/bfe0f4d2c97948dfad5a875d5e6d5416 [2020-09-25 06:45:11,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:11,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:11,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:11,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:11,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:11,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:10" (1/1) ... [2020-09-25 06:45:11,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3213de8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11, skipping insertion in model container [2020-09-25 06:45:11,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:10" (1/1) ... [2020-09-25 06:45:11,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:11,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:11,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:11,600 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:11,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:11,862 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:11,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11 WrapperNode [2020-09-25 06:45:11,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:11,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:11,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:11,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:11,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:11,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:11,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:11,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:11,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:11,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:11,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (1/1) ... [2020-09-25 06:45:12,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:12,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:12,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:12,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:12,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (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 06:45:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:13,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:13,451 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:13,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:13 BoogieIcfgContainer [2020-09-25 06:45:13,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:13,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:13,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:13,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:13,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:10" (1/3) ... [2020-09-25 06:45:13,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@939d996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:13, skipping insertion in model container [2020-09-25 06:45:13,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:11" (2/3) ... [2020-09-25 06:45:13,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@939d996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:13, skipping insertion in model container [2020-09-25 06:45:13,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:13" (3/3) ... [2020-09-25 06:45:13,472 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-09-25 06:45:13,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:13,499 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:13,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:13,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:13,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:13,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:13,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:13,561 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:13,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:13,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:13,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 06:45:13,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:13,618 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] [2020-09-25 06:45:13,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:13,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1921303583, now seen corresponding path program 1 times [2020-09-25 06:45:13,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:13,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925650291] [2020-09-25 06:45:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:18,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:45:18,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:45:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:45:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:18,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:45:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 06:45:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:45:19,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:19,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:19,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:45:19,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:19,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:45:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:19,383 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 06:45:19,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925650291] [2020-09-25 06:45:19,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:19,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:19,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471478739] [2020-09-25 06:45:19,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:19,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:19,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:19,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:19,430 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:21,806 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 06:45:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:21,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 06:45:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:21,845 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 06:45:21,846 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 06:45:21,857 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 06:45:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 06:45:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 06:45:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 06:45:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 06:45:21,977 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 142 [2020-09-25 06:45:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:21,979 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 06:45:21,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 06:45:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:45:21,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:21,988 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] [2020-09-25 06:45:21,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:21,989 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:21,989 INFO L82 PathProgramCache]: Analyzing trace with hash -377236683, now seen corresponding path program 1 times [2020-09-25 06:45:21,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:21,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949728286] [2020-09-25 06:45:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:22,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:27,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:45:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:45:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:45:27,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:27,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:45:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:45:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:27,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:27,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:27,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:27,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:27,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:45:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:27,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:45:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:27,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949728286] [2020-09-25 06:45:27,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:27,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:27,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342037652] [2020-09-25 06:45:27,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:27,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:27,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:27,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:27,352 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 06:45:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:29,252 INFO L93 Difference]: Finished difference Result 1609 states and 2063 transitions. [2020-09-25 06:45:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:29,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 06:45:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:29,264 INFO L225 Difference]: With dead ends: 1609 [2020-09-25 06:45:29,264 INFO L226 Difference]: Without dead ends: 972 [2020-09-25 06:45:29,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-25 06:45:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 810. [2020-09-25 06:45:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-09-25 06:45:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1037 transitions. [2020-09-25 06:45:29,314 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1037 transitions. Word has length 160 [2020-09-25 06:45:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:29,315 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1037 transitions. [2020-09-25 06:45:29,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1037 transitions. [2020-09-25 06:45:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 06:45:29,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:29,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:29,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:29,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:29,322 INFO L82 PathProgramCache]: Analyzing trace with hash -880736070, now seen corresponding path program 1 times [2020-09-25 06:45:29,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:29,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484989166] [2020-09-25 06:45:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 06:45:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:45:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:34,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:34,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:45:34,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 06:45:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:34,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:34,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:34,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:34,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:34,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:45:34,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:34,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:45:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:34,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484989166] [2020-09-25 06:45:34,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:34,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:34,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941937266] [2020-09-25 06:45:34,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:34,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:34,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:34,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:34,618 INFO L87 Difference]: Start difference. First operand 810 states and 1037 transitions. Second operand 5 states. [2020-09-25 06:45:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:36,684 INFO L93 Difference]: Finished difference Result 2061 states and 2780 transitions. [2020-09-25 06:45:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:36,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 06:45:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:36,698 INFO L225 Difference]: With dead ends: 2061 [2020-09-25 06:45:36,699 INFO L226 Difference]: Without dead ends: 1273 [2020-09-25 06:45:36,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-25 06:45:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1263. [2020-09-25 06:45:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-09-25 06:45:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1657 transitions. [2020-09-25 06:45:36,761 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1657 transitions. Word has length 168 [2020-09-25 06:45:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:36,763 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1657 transitions. [2020-09-25 06:45:36,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1657 transitions. [2020-09-25 06:45:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 06:45:36,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:36,778 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, 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] [2020-09-25 06:45:36,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:36,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:36,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1512218259, now seen corresponding path program 1 times [2020-09-25 06:45:36,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:36,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860575728] [2020-09-25 06:45:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:41,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 06:45:41,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:45:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:45:41,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:41,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:45:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:45:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:41,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:41,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:41,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:41,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:41,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:45:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:45:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:41,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:45:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 06:45:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:45:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 06:45:42,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:42,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:45:42,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:45:42,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860575728] [2020-09-25 06:45:42,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:42,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:42,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642397658] [2020-09-25 06:45:42,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:42,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:42,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:42,224 INFO L87 Difference]: Start difference. First operand 1263 states and 1657 transitions. Second operand 7 states. [2020-09-25 06:45:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:46,020 INFO L93 Difference]: Finished difference Result 4128 states and 5925 transitions. [2020-09-25 06:45:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:45:46,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 06:45:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:46,041 INFO L225 Difference]: With dead ends: 4128 [2020-09-25 06:45:46,041 INFO L226 Difference]: Without dead ends: 2887 [2020-09-25 06:45:46,051 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 [2020-09-25 06:45:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-09-25 06:45:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2827. [2020-09-25 06:45:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-09-25 06:45:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3711 transitions. [2020-09-25 06:45:46,179 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3711 transitions. Word has length 217 [2020-09-25 06:45:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:46,179 INFO L479 AbstractCegarLoop]: Abstraction has 2827 states and 3711 transitions. [2020-09-25 06:45:46,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3711 transitions. [2020-09-25 06:45:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 06:45:46,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:46,201 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] [2020-09-25 06:45:46,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:46,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:46,202 INFO L82 PathProgramCache]: Analyzing trace with hash -144447401, now seen corresponding path program 1 times [2020-09-25 06:45:46,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:46,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785070371] [2020-09-25 06:45:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 06:45:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:45:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:45:51,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 06:45:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:45:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:51,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:51,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:45:51,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:45:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:45:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:45:51,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 06:45:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:45:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:45:51,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785070371] [2020-09-25 06:45:51,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:51,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:45:51,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579853545] [2020-09-25 06:45:51,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:45:51,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:45:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:45:51,646 INFO L87 Difference]: Start difference. First operand 2827 states and 3711 transitions. Second operand 8 states. [2020-09-25 06:45:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:54,830 INFO L93 Difference]: Finished difference Result 6150 states and 8370 transitions. [2020-09-25 06:45:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:45:54,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-09-25 06:45:54,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:54,852 INFO L225 Difference]: With dead ends: 6150 [2020-09-25 06:45:54,853 INFO L226 Difference]: Without dead ends: 3345 [2020-09-25 06:45:54,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:45:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2020-09-25 06:45:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3120. [2020-09-25 06:45:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-09-25 06:45:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 3993 transitions. [2020-09-25 06:45:54,960 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 3993 transitions. Word has length 220 [2020-09-25 06:45:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:54,960 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 3993 transitions. [2020-09-25 06:45:54,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:45:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 3993 transitions. [2020-09-25 06:45:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 06:45:54,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:54,977 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:54,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:54,977 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash -190242086, now seen corresponding path program 1 times [2020-09-25 06:45:54,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:54,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72407444] [2020-09-25 06:45:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:00,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 06:46:00,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:46:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:46:00,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:00,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 06:46:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:46:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking...