/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:03,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:03,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:03,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:03,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:03,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:03,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:03,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:03,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:03,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:03,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:03,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:03,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:03,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:03,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:03,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:03,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:03,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:03,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:03,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:03,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:03,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:03,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:03,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:03,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:03,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:03,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:03,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:03,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:03,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:03,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:03,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:03,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:03,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:03,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:03,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:03,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:03,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:03,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:03,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:03,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:03,565 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 13:29:03,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:03,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:03,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:03,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:03,617 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:03,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:03,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:03,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:03,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:03,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:03,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:03,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:03,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:03,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:03,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:03,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:03,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:03,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:03,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:03,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:03,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:03,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:03,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:03,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:03,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:03,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:03,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:03,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:03,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:03,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:29:04,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:04,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:04,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:04,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:04,138 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:04,140 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 13:29:04,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54305c6ff/fffc0a19cd1249dba3e8fe3807547c06/FLAG58d4c3a5a [2020-09-25 13:29:04,901 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:04,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 13:29:04,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54305c6ff/fffc0a19cd1249dba3e8fe3807547c06/FLAG58d4c3a5a [2020-09-25 13:29:05,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54305c6ff/fffc0a19cd1249dba3e8fe3807547c06 [2020-09-25 13:29:05,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:05,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:05,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:05,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:05,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:05,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:05,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05, skipping insertion in model container [2020-09-25 13:29:05,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:05,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:05,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:05,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:05,716 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:05,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:05,967 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:05,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05 WrapperNode [2020-09-25 13:29:05,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:05,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:05,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:05,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:05,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:05,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:06,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:06,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:06,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:06,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:06,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:06,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:06,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:06,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:06,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:06,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (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 13:29:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:07,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:07,525 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:07,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:07 BoogieIcfgContainer [2020-09-25 13:29:07,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:07,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:07,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:07,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:07,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:05" (1/3) ... [2020-09-25 13:29:07,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:07, skipping insertion in model container [2020-09-25 13:29:07,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05" (2/3) ... [2020-09-25 13:29:07,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:07, skipping insertion in model container [2020-09-25 13:29:07,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:07" (3/3) ... [2020-09-25 13:29:07,545 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 13:29:07,559 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:07,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:07,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:07,631 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:07,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:07,631 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:07,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:07,632 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:07,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:07,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:07,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 13:29:07,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:07,684 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] [2020-09-25 13:29:07,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 13:29:07,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:07,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 13:29:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 13:29:12,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:29:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:29:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:12,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:29:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 13:29:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:13,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:13,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:29:13,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:13,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:29:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:13,275 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 13:29:13,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 13:29:13,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:13,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:29:13,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860132374] [2020-09-25 13:29:13,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:13,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:13,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:13,310 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:29:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:16,404 INFO L93 Difference]: Finished difference Result 1449 states and 1984 transitions. [2020-09-25 13:29:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:29:16,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-09-25 13:29:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:16,449 INFO L225 Difference]: With dead ends: 1449 [2020-09-25 13:29:16,449 INFO L226 Difference]: Without dead ends: 870 [2020-09-25 13:29:16,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:29:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-09-25 13:29:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 746. [2020-09-25 13:29:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 13:29:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 13:29:16,572 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 114 [2020-09-25 13:29:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:16,573 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 13:29:16,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 13:29:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 13:29:16,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:16,583 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] [2020-09-25 13:29:16,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:16,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1825258725, now seen corresponding path program 1 times [2020-09-25 13:29:16,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:16,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501150412] [2020-09-25 13:29:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:16,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 13:29:21,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:29:21,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:29:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:29:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:29:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:22,093 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-09-25 13:29:22,350 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 13:29:22,479 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 13:29:22,612 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 13:29:22,768 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 13:29:22,935 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 13:29:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:23,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:23,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:23,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:29:23,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:23,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 13:29:23,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:23,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:29:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:23,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501150412] [2020-09-25 13:29:23,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:23,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:29:23,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938084176] [2020-09-25 13:29:23,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:29:23,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:29:23,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:29:23,644 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 19 states. [2020-09-25 13:29:24,423 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 13:29:24,602 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 13:29:25,080 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 13:29:25,624 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 13:29:26,073 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 13:29:27,053 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 13:29:27,369 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 13:29:27,852 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 13:29:28,055 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 13:29:29,206 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 13:29:29,817 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 13:29:30,332 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 13:29:30,648 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 13:29:31,344 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 13:29:31,766 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-09-25 13:29:32,073 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 13:29:32,616 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 13:29:33,086 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 13:29:33,751 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 13:29:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:34,619 INFO L93 Difference]: Finished difference Result 2397 states and 3163 transitions. [2020-09-25 13:29:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 13:29:34,620 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 136 [2020-09-25 13:29:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:34,639 INFO L225 Difference]: With dead ends: 2397 [2020-09-25 13:29:34,640 INFO L226 Difference]: Without dead ends: 1675 [2020-09-25 13:29:34,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=682, Invalid=1768, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 13:29:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-09-25 13:29:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1566. [2020-09-25 13:29:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-25 13:29:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1896 transitions. [2020-09-25 13:29:34,726 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1896 transitions. Word has length 136 [2020-09-25 13:29:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:34,727 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1896 transitions. [2020-09-25 13:29:34,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:29:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1896 transitions. [2020-09-25 13:29:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 13:29:34,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:34,733 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] [2020-09-25 13:29:34,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:34,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash -688181854, now seen corresponding path program 1 times [2020-09-25 13:29:34,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:34,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897681512] [2020-09-25 13:29:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:39,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:29:39,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:29:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:29:39,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:39,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 13:29:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:29:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:39,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:39,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:29:39,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:39,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:39,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:29:39,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:29:39,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:39,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:29:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:40,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897681512] [2020-09-25 13:29:40,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:40,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:40,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368997357] [2020-09-25 13:29:40,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:40,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:40,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:40,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:40,043 INFO L87 Difference]: Start difference. First operand 1566 states and 1896 transitions. Second operand 5 states. [2020-09-25 13:29:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:42,077 INFO L93 Difference]: Finished difference Result 3851 states and 4828 transitions. [2020-09-25 13:29:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:42,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 13:29:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:42,095 INFO L225 Difference]: With dead ends: 3851 [2020-09-25 13:29:42,095 INFO L226 Difference]: Without dead ends: 2309 [2020-09-25 13:29:42,101 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 13:29:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-09-25 13:29:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2281. [2020-09-25 13:29:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-25 13:29:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2824 transitions. [2020-09-25 13:29:42,189 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2824 transitions. Word has length 143 [2020-09-25 13:29:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:42,190 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 2824 transitions. [2020-09-25 13:29:42,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2824 transitions. [2020-09-25 13:29:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 13:29:42,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:42,203 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, 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] [2020-09-25 13:29:42,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:42,204 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1128367714, now seen corresponding path program 1 times [2020-09-25 13:29:42,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:42,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518558124] [2020-09-25 13:29:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:47,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 13:29:47,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:29:47,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:47,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:29:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:29:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:47,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:47,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:29:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:47,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:47,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:47,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:29:47,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:47,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:47,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:29:47,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:47,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 13:29:47,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:47,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:29:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:29:47,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518558124] [2020-09-25 13:29:47,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:47,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:29:47,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434689281] [2020-09-25 13:29:47,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:29:47,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:47,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:29:47,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:29:47,818 INFO L87 Difference]: Start difference. First operand 2281 states and 2824 transitions. Second operand 8 states. [2020-09-25 13:29:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:50,338 INFO L93 Difference]: Finished difference Result 5133 states and 6539 transitions. [2020-09-25 13:29:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:29:50,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-09-25 13:29:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:50,356 INFO L225 Difference]: With dead ends: 5133 [2020-09-25 13:29:50,357 INFO L226 Difference]: Without dead ends: 2876 [2020-09-25 13:29:50,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:29:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-09-25 13:29:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2481. [2020-09-25 13:29:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2481 states. [2020-09-25 13:29:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3077 transitions. [2020-09-25 13:29:50,463 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3077 transitions. Word has length 168 [2020-09-25 13:29:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:50,464 INFO L479 AbstractCegarLoop]: Abstraction has 2481 states and 3077 transitions. [2020-09-25 13:29:50,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:29:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3077 transitions. [2020-09-25 13:29:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 13:29:50,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:50,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:50,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:50,477 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -263853482, now seen corresponding path program 1 times [2020-09-25 13:29:50,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:50,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493201435] [2020-09-25 13:29:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking...