/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:46:46,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:46:46,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:46:46,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:46:46,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:46:46,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:46:46,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:46:46,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:46:46,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:46:46,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:46:46,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:46:46,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:46:46,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:46:46,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:46:46,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:46:46,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:46:46,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:46:46,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:46:46,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:46:46,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:46:46,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:46:46,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:46:46,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:46:46,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:46:46,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:46:46,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:46:46,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:46:46,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:46:46,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:46:46,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:46:46,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:46:46,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:46:46,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:46:46,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:46:46,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:46:46,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:46:46,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:46:46,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:46:46,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:46:46,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:46:46,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:46:46,683 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 [2020-10-14 00:46:46,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:46:46,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:46:46,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:46:46,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:46:46,727 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:46:46,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:46:46,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:46:46,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:46:46,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:46:46,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:46:46,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:46:46,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:46:46,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:46:46,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:46:46,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:46:46,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:46:46,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:46:46,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:46:46,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:46:46,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:46:46,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:46:46,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:46:46,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:46:46,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:46:46,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:46:46,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:46:46,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:46:46,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:46:46,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:46:46,731 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:46:47,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:46:47,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:46:47,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:46:47,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:46:47,033 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:46:47,033 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04.c [2020-10-14 00:46:47,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa7d6f5c8/0454fc174d3f41f2a8bbcd04ab8f7dbc/FLAG4b46409eb [2020-10-14 00:46:47,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:46:47,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label04.c [2020-10-14 00:46:47,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa7d6f5c8/0454fc174d3f41f2a8bbcd04ab8f7dbc/FLAG4b46409eb [2020-10-14 00:46:47,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa7d6f5c8/0454fc174d3f41f2a8bbcd04ab8f7dbc [2020-10-14 00:46:47,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:46:47,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:46:47,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:46:47,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:46:47,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:46:47,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:46:47" (1/1) ... [2020-10-14 00:46:47,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22dfad9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:47, skipping insertion in model container [2020-10-14 00:46:47,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:46:47" (1/1) ... [2020-10-14 00:46:48,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:46:48,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:46:48,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:46:48,890 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:46:49,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:46:49,314 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:46:49,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49 WrapperNode [2020-10-14 00:46:49,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:46:49,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:46:49,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:46:49,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:46:49,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (1/1) ... [2020-10-14 00:46:49,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:46:49,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:46:49,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:46:49,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:46:49,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (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 [2020-10-14 00:46:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:46:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:46:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:46:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:46:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:46:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:46:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:46:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:46:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:46:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:46:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:46:51,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:46:51,290 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:46:51,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:46:51 BoogieIcfgContainer [2020-10-14 00:46:51,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:46:51,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:46:51,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:46:51,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:46:51,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:46:47" (1/3) ... [2020-10-14 00:46:51,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b76e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:46:51, skipping insertion in model container [2020-10-14 00:46:51,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:49" (2/3) ... [2020-10-14 00:46:51,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b76e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:46:51, skipping insertion in model container [2020-10-14 00:46:51,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:46:51" (3/3) ... [2020-10-14 00:46:51,305 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label04.c [2020-10-14 00:46:51,315 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:46:51,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:46:51,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:46:51,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:46:51,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:46:51,361 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:46:51,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:46:51,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:46:51,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:46:51,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:46:51,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:46:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:46:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 00:46:51,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:51,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:46:51,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:51,440 INFO L82 PathProgramCache]: Analyzing trace with hash 339161469, now seen corresponding path program 1 times [2020-10-14 00:46:51,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:51,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541898694] [2020-10-14 00:46:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:52,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 00:46:56,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:46:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4229 [2020-10-14 00:46:56,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:56,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:46:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:46:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 00:46:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:46:56,378 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:46:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:46:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:46:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:46:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:46:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:46:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:46:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:46:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:46:56,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541898694] [2020-10-14 00:46:56,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:46:56,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:46:56,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617772540] [2020-10-14 00:46:56,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:46:56,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:46:56,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:46:56,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:46:56,515 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:46:56,697 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:46:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:46:59,348 INFO L93 Difference]: Finished difference Result 884 states and 1536 transitions. [2020-10-14 00:46:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:46:59,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2020-10-14 00:46:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:46:59,371 INFO L225 Difference]: With dead ends: 884 [2020-10-14 00:46:59,371 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 00:46:59,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:46:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 00:46:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-14 00:46:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 00:46:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 728 transitions. [2020-10-14 00:46:59,459 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 728 transitions. Word has length 204 [2020-10-14 00:46:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:46:59,460 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 728 transitions. [2020-10-14 00:46:59,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:46:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 728 transitions. [2020-10-14 00:46:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 00:46:59,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:59,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:46:59,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:46:59,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash -967678630, now seen corresponding path program 1 times [2020-10-14 00:46:59,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:59,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791816790] [2020-10-14 00:46:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:59,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:03,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:03,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 00:47:03,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3580 [2020-10-14 00:47:03,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:03,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:47:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 00:47:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:03,495 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:03,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:47:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:03,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:03,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:03,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:47:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:03,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:03,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791816790] [2020-10-14 00:47:03,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:03,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:47:03,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817802942] [2020-10-14 00:47:03,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:47:03,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:03,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:47:03,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:03,875 INFO L87 Difference]: Start difference. First operand 475 states and 728 transitions. Second operand 6 states. [2020-10-14 00:47:04,184 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:04,909 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:07,569 INFO L93 Difference]: Finished difference Result 1831 states and 2875 transitions. [2020-10-14 00:47:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:47:07,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-14 00:47:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:07,583 INFO L225 Difference]: With dead ends: 1831 [2020-10-14 00:47:07,583 INFO L226 Difference]: Without dead ends: 1362 [2020-10-14 00:47:07,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:47:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-10-14 00:47:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1322. [2020-10-14 00:47:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1322 states. [2020-10-14 00:47:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 2006 transitions. [2020-10-14 00:47:07,668 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 2006 transitions. Word has length 213 [2020-10-14 00:47:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:07,669 INFO L479 AbstractCegarLoop]: Abstraction has 1322 states and 2006 transitions. [2020-10-14 00:47:07,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:47:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 2006 transitions. [2020-10-14 00:47:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 00:47:07,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:07,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:07,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:47:07,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:07,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1534791447, now seen corresponding path program 1 times [2020-10-14 00:47:07,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:07,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044017866] [2020-10-14 00:47:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:11,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:11,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 00:47:11,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3931 [2020-10-14 00:47:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:11,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:47:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 00:47:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:11,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:11,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:11,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:11,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:11,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:47:11,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:11,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:12,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:12,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:47:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:47:12,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:12,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:12,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044017866] [2020-10-14 00:47:12,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:12,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:12,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896341273] [2020-10-14 00:47:12,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:12,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:12,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:12,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:12,123 INFO L87 Difference]: Start difference. First operand 1322 states and 2006 transitions. Second operand 5 states. [2020-10-14 00:47:12,365 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:14,886 INFO L93 Difference]: Finished difference Result 3907 states and 6043 transitions. [2020-10-14 00:47:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:14,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-14 00:47:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:14,905 INFO L225 Difference]: With dead ends: 3907 [2020-10-14 00:47:14,905 INFO L226 Difference]: Without dead ends: 2591 [2020-10-14 00:47:14,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-10-14 00:47:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2580. [2020-10-14 00:47:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2020-10-14 00:47:15,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3819 transitions. [2020-10-14 00:47:15,055 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3819 transitions. Word has length 216 [2020-10-14 00:47:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:15,056 INFO L479 AbstractCegarLoop]: Abstraction has 2580 states and 3819 transitions. [2020-10-14 00:47:15,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3819 transitions. [2020-10-14 00:47:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 00:47:15,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:15,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:15,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:47:15,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:15,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:15,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2072871859, now seen corresponding path program 1 times [2020-10-14 00:47:15,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:15,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688773727] [2020-10-14 00:47:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 00:47:20,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:47:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:47:20,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:20,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:47:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 00:47:20,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:20,407 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:20,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:20,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:20,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:20,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:47:20,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:20,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:47:20,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688773727] [2020-10-14 00:47:20,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:20,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:20,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234065713] [2020-10-14 00:47:20,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:20,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:20,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:20,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:20,840 INFO L87 Difference]: Start difference. First operand 2580 states and 3819 transitions. Second operand 5 states. [2020-10-14 00:47:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:23,356 INFO L93 Difference]: Finished difference Result 6836 states and 10194 transitions. [2020-10-14 00:47:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:23,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 00:47:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:23,375 INFO L225 Difference]: With dead ends: 6836 [2020-10-14 00:47:23,375 INFO L226 Difference]: Without dead ends: 2583 [2020-10-14 00:47:23,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2020-10-14 00:47:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2579. [2020-10-14 00:47:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-10-14 00:47:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3817 transitions. [2020-10-14 00:47:23,465 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3817 transitions. Word has length 223 [2020-10-14 00:47:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:23,466 INFO L479 AbstractCegarLoop]: Abstraction has 2579 states and 3817 transitions. [2020-10-14 00:47:23,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3817 transitions. [2020-10-14 00:47:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 00:47:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:23,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:23,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:47:23,476 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:23,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1809564582, now seen corresponding path program 1 times [2020-10-14 00:47:23,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:23,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024865972] [2020-10-14 00:47:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 00:47:25,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-14 00:47:25,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:47:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 00:47:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:26,164 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:26,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:26,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:26,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:26,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:47:26,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:26,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:26,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:47:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:47:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:26,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:47:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:26,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024865972] [2020-10-14 00:47:26,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:26,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:26,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403930696] [2020-10-14 00:47:26,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:26,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:26,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:26,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:26,384 INFO L87 Difference]: Start difference. First operand 2579 states and 3817 transitions. Second operand 5 states. [2020-10-14 00:47:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:28,761 INFO L93 Difference]: Finished difference Result 7264 states and 11043 transitions. [2020-10-14 00:47:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:28,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 00:47:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:28,787 INFO L225 Difference]: With dead ends: 7264 [2020-10-14 00:47:28,788 INFO L226 Difference]: Without dead ends: 4691 [2020-10-14 00:47:28,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2020-10-14 00:47:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4684. [2020-10-14 00:47:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4684 states. [2020-10-14 00:47:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 6753 transitions. [2020-10-14 00:47:28,930 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 6753 transitions. Word has length 223 [2020-10-14 00:47:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:28,930 INFO L479 AbstractCegarLoop]: Abstraction has 4684 states and 6753 transitions. [2020-10-14 00:47:28,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 6753 transitions. [2020-10-14 00:47:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 00:47:28,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:28,946 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:28,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:47:28,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash -115795166, now seen corresponding path program 1 times [2020-10-14 00:47:28,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:28,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809561155] [2020-10-14 00:47:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:29,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:34,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:34,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 00:47:34,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:47:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 00:47:34,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:34,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:47:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:47:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:34,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:34,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:34,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:47:34,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:34,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:34,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:34,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:34,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:47:34,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:47:34,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:34,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:47:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:34,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:34,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:47:34,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:47:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:47:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:34,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:34,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:34,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:34,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:34,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:47:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:47:34,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809561155] [2020-10-14 00:47:34,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:34,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:47:34,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082660368] [2020-10-14 00:47:34,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:34,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:34,526 INFO L87 Difference]: Start difference. First operand 4684 states and 6753 transitions. Second operand 7 states. [2020-10-14 00:47:35,251 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:37,891 INFO L93 Difference]: Finished difference Result 13165 states and 22567 transitions. [2020-10-14 00:47:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:47:37,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-14 00:47:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:37,957 INFO L225 Difference]: With dead ends: 13165 [2020-10-14 00:47:37,958 INFO L226 Difference]: Without dead ends: 8487 [2020-10-14 00:47:37,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:47:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8487 states. [2020-10-14 00:47:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8487 to 7927. [2020-10-14 00:47:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7927 states. [2020-10-14 00:47:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 10925 transitions. [2020-10-14 00:47:38,393 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 10925 transitions. Word has length 249 [2020-10-14 00:47:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:38,394 INFO L479 AbstractCegarLoop]: Abstraction has 7927 states and 10925 transitions. [2020-10-14 00:47:38,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:47:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 10925 transitions. [2020-10-14 00:47:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 00:47:38,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:38,422 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:38,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:47:38,423 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:38,423 INFO L82 PathProgramCache]: Analyzing trace with hash -915662129, now seen corresponding path program 1 times [2020-10-14 00:47:38,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:38,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133973250] [2020-10-14 00:47:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:38,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 00:47:43,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:47:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:47:43,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:43,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:47:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:47:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:47:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:43,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:43,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:43,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:43,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:43,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:43,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:47:43,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:47:43,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:43,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:47:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:43,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:47:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 00:47:43,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:43,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:47:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:43,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:47:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:43,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:43,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:43,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:43,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:47:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:43,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:47:44,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133973250] [2020-10-14 00:47:44,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:44,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:47:44,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191379067] [2020-10-14 00:47:44,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:44,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:44,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:44,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:44,006 INFO L87 Difference]: Start difference. First operand 7927 states and 10925 transitions. Second operand 7 states. [2020-10-14 00:47:44,265 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:47:44,535 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:48,765 INFO L93 Difference]: Finished difference Result 22987 states and 34803 transitions. [2020-10-14 00:47:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:47:48,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 00:47:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:48,867 INFO L225 Difference]: With dead ends: 22987 [2020-10-14 00:47:48,868 INFO L226 Difference]: Without dead ends: 15066 [2020-10-14 00:47:48,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:47:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15066 states. [2020-10-14 00:47:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15066 to 14820. [2020-10-14 00:47:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14820 states. [2020-10-14 00:47:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14820 states to 14820 states and 20353 transitions. [2020-10-14 00:47:49,416 INFO L78 Accepts]: Start accepts. Automaton has 14820 states and 20353 transitions. Word has length 250 [2020-10-14 00:47:49,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:49,417 INFO L479 AbstractCegarLoop]: Abstraction has 14820 states and 20353 transitions. [2020-10-14 00:47:49,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:47:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 14820 states and 20353 transitions. [2020-10-14 00:47:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 00:47:49,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:49,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:49,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:47:49,474 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash -937456021, now seen corresponding path program 1 times [2020-10-14 00:47:49,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:49,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996164162] [2020-10-14 00:47:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:51,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:51,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 00:47:51,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 00:47:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:52,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:52,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:52,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:52,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 00:47:52,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:52,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:47:52,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:52,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:52,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:47:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:52,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996164162] [2020-10-14 00:47:52,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:52,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:52,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920000743] [2020-10-14 00:47:52,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:52,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:52,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:52,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:52,360 INFO L87 Difference]: Start difference. First operand 14820 states and 20353 transitions. Second operand 5 states. [2020-10-14 00:47:52,552 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:54,917 INFO L93 Difference]: Finished difference Result 39086 states and 54407 transitions. [2020-10-14 00:47:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:54,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-14 00:47:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:54,998 INFO L225 Difference]: With dead ends: 39086 [2020-10-14 00:47:54,998 INFO L226 Difference]: Without dead ends: 24272 [2020-10-14 00:47:55,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24272 states. [2020-10-14 00:47:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24272 to 24024. [2020-10-14 00:47:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24024 states. [2020-10-14 00:47:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24024 states to 24024 states and 33082 transitions. [2020-10-14 00:47:55,669 INFO L78 Accepts]: Start accepts. Automaton has 24024 states and 33082 transitions. Word has length 272 [2020-10-14 00:47:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:55,670 INFO L479 AbstractCegarLoop]: Abstraction has 24024 states and 33082 transitions. [2020-10-14 00:47:55,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 24024 states and 33082 transitions. [2020-10-14 00:47:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 00:47:55,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:55,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:47:55,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:47:55,751 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:55,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2086681991, now seen corresponding path program 1 times [2020-10-14 00:47:55,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:55,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415245720] [2020-10-14 00:47:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-14 00:47:56,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-14 00:47:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:47:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 00:47:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:47:56,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:47:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:58,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415245720] [2020-10-14 00:47:58,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:47:58,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:47:58,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798031053] [2020-10-14 00:47:58,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:58,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:58,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:58,143 INFO L87 Difference]: Start difference. First operand 24024 states and 33082 transitions. Second operand 7 states. [2020-10-14 00:47:58,271 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:59,208 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:01,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:01,204 INFO L93 Difference]: Finished difference Result 56760 states and 82256 transitions. [2020-10-14 00:48:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:01,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-14 00:48:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:01,310 INFO L225 Difference]: With dead ends: 56760 [2020-10-14 00:48:01,311 INFO L226 Difference]: Without dead ends: 32742 [2020-10-14 00:48:01,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32742 states. [2020-10-14 00:48:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32742 to 32225. [2020-10-14 00:48:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32225 states. [2020-10-14 00:48:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32225 states to 32225 states and 41868 transitions. [2020-10-14 00:48:02,112 INFO L78 Accepts]: Start accepts. Automaton has 32225 states and 41868 transitions. Word has length 290 [2020-10-14 00:48:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:02,113 INFO L479 AbstractCegarLoop]: Abstraction has 32225 states and 41868 transitions. [2020-10-14 00:48:02,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32225 states and 41868 transitions. [2020-10-14 00:48:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 00:48:02,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:02,156 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:02,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:48:02,156 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1705507839, now seen corresponding path program 1 times [2020-10-14 00:48:02,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:02,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199164404] [2020-10-14 00:48:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 00:48:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:48:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:07,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:07,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:48:07,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:48:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:48:07,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 00:48:07,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:48:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:48:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:07,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:48:07,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:48:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:07,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 00:48:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:48:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:48:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:48:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 122 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:48:07,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199164404] [2020-10-14 00:48:07,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:07,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:07,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191915415] [2020-10-14 00:48:07,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:07,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:07,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:07,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:07,840 INFO L87 Difference]: Start difference. First operand 32225 states and 41868 transitions. Second operand 7 states. [2020-10-14 00:48:08,162 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:09,029 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:11,403 INFO L93 Difference]: Finished difference Result 83242 states and 123303 transitions. [2020-10-14 00:48:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:11,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-14 00:48:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:11,702 INFO L225 Difference]: With dead ends: 83242 [2020-10-14 00:48:11,702 INFO L226 Difference]: Without dead ends: 57372 [2020-10-14 00:48:11,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57372 states. [2020-10-14 00:48:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57372 to 54279. [2020-10-14 00:48:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54279 states. [2020-10-14 00:48:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54279 states to 54279 states and 69499 transitions. [2020-10-14 00:48:14,971 INFO L78 Accepts]: Start accepts. Automaton has 54279 states and 69499 transitions. Word has length 299 [2020-10-14 00:48:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:14,972 INFO L479 AbstractCegarLoop]: Abstraction has 54279 states and 69499 transitions. [2020-10-14 00:48:14,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 54279 states and 69499 transitions. [2020-10-14 00:48:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 00:48:15,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:15,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:15,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:48:15,053 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1274652007, now seen corresponding path program 1 times [2020-10-14 00:48:15,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:15,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862995212] [2020-10-14 00:48:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 00:48:20,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:48:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:48:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 00:48:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:48:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:20,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:20,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:20,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:48:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:48:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:48:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 110 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:48:20,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862995212] [2020-10-14 00:48:20,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:20,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:20,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292706172] [2020-10-14 00:48:20,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:20,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:20,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:20,815 INFO L87 Difference]: Start difference. First operand 54279 states and 69499 transitions. Second operand 7 states. [2020-10-14 00:48:21,071 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:21,532 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:48:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:24,437 INFO L93 Difference]: Finished difference Result 115103 states and 159502 transitions. [2020-10-14 00:48:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:24,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-14 00:48:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:24,695 INFO L225 Difference]: With dead ends: 115103 [2020-10-14 00:48:24,695 INFO L226 Difference]: Without dead ends: 60830 [2020-10-14 00:48:24,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60830 states. [2020-10-14 00:48:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60830 to 59209. [2020-10-14 00:48:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59209 states. [2020-10-14 00:48:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59209 states to 59209 states and 75403 transitions. [2020-10-14 00:48:26,540 INFO L78 Accepts]: Start accepts. Automaton has 59209 states and 75403 transitions. Word has length 302 [2020-10-14 00:48:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:26,541 INFO L479 AbstractCegarLoop]: Abstraction has 59209 states and 75403 transitions. [2020-10-14 00:48:26,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 59209 states and 75403 transitions. [2020-10-14 00:48:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 00:48:26,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:26,630 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:26,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:48:26,631 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1008619714, now seen corresponding path program 1 times [2020-10-14 00:48:26,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:26,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912120636] [2020-10-14 00:48:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-14 00:48:31,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:48:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:48:31,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 00:48:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:48:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,841 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:48:31,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:48:31,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:48:31,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:48:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:31,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:48:31,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:48:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:48:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:32,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:48:32,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 00:48:32,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:32,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:48:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 00:48:32,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912120636] [2020-10-14 00:48:32,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:32,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:32,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935351752] [2020-10-14 00:48:32,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:32,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:32,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:32,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:32,379 INFO L87 Difference]: Start difference. First operand 59209 states and 75403 transitions. Second operand 7 states. [2020-10-14 00:48:32,635 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:34,385 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:36,344 INFO L93 Difference]: Finished difference Result 104621 states and 139311 transitions. [2020-10-14 00:48:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:36,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-14 00:48:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:36,529 INFO L225 Difference]: With dead ends: 104621 [2020-10-14 00:48:36,529 INFO L226 Difference]: Without dead ends: 51998 [2020-10-14 00:48:36,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51998 states. [2020-10-14 00:48:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51998 to 50770. [2020-10-14 00:48:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50770 states. [2020-10-14 00:48:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50770 states to 50770 states and 62463 transitions. [2020-10-14 00:48:37,736 INFO L78 Accepts]: Start accepts. Automaton has 50770 states and 62463 transitions. Word has length 343 [2020-10-14 00:48:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:37,737 INFO L479 AbstractCegarLoop]: Abstraction has 50770 states and 62463 transitions. [2020-10-14 00:48:37,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 50770 states and 62463 transitions. [2020-10-14 00:48:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 00:48:37,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:37,800 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:37,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:48:37,800 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:37,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1769878616, now seen corresponding path program 1 times [2020-10-14 00:48:37,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:37,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612437629] [2020-10-14 00:48:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-14 00:48:42,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:48:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 00:48:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:42,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 00:48:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:48:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:43,061 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:43,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:43,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:43,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:43,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:43,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:48:43,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:48:43,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:43,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:48:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:43,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 00:48:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:48:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:43,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 00:48:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 00:48:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:43,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:48:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:48:43,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612437629] [2020-10-14 00:48:43,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:43,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:43,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348596387] [2020-10-14 00:48:43,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:43,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:43,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:43,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:43,450 INFO L87 Difference]: Start difference. First operand 50770 states and 62463 transitions. Second operand 7 states. [2020-10-14 00:48:43,581 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:48:43,988 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:46,998 INFO L93 Difference]: Finished difference Result 131118 states and 166327 transitions. [2020-10-14 00:48:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:46,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-14 00:48:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:47,176 INFO L225 Difference]: With dead ends: 131118 [2020-10-14 00:48:47,177 INFO L226 Difference]: Without dead ends: 86942 [2020-10-14 00:48:47,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86942 states. [2020-10-14 00:48:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86942 to 86126. [2020-10-14 00:48:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86126 states. [2020-10-14 00:48:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86126 states to 86126 states and 106935 transitions. [2020-10-14 00:48:48,462 INFO L78 Accepts]: Start accepts. Automaton has 86126 states and 106935 transitions. Word has length 354 [2020-10-14 00:48:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:48,462 INFO L479 AbstractCegarLoop]: Abstraction has 86126 states and 106935 transitions. [2020-10-14 00:48:48,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 86126 states and 106935 transitions. [2020-10-14 00:48:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-14 00:48:48,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:48,561 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:48,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:48:48,561 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash -461592841, now seen corresponding path program 1 times [2020-10-14 00:48:48,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:48,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611592156] [2020-10-14 00:48:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:53,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:48:53,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:48:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:53,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:53,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:53,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:48:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:53,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:53,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:48:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:48:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:53,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:48:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:48:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:53,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:48:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:48:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:48:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:54,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:54,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:48:54,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:54,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:48:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:54,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:48:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:48:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:54,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:48:54,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:48:54,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:54,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 00:48:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 177 proven. 44 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 00:48:54,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611592156] [2020-10-14 00:48:54,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:54,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:54,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058401328] [2020-10-14 00:48:54,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:54,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:54,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:54,236 INFO L87 Difference]: Start difference. First operand 86126 states and 106935 transitions. Second operand 7 states. [2020-10-14 00:48:54,371 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:56,407 INFO L93 Difference]: Finished difference Result 152537 states and 187995 transitions. [2020-10-14 00:48:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:56,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-14 00:48:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:56,554 INFO L225 Difference]: With dead ends: 152537 [2020-10-14 00:48:56,555 INFO L226 Difference]: Without dead ends: 78689 [2020-10-14 00:48:56,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:48:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78689 states. [2020-10-14 00:48:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78689 to 78601. [2020-10-14 00:48:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78601 states. [2020-10-14 00:48:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78601 states to 78601 states and 95382 transitions. [2020-10-14 00:48:58,217 INFO L78 Accepts]: Start accepts. Automaton has 78601 states and 95382 transitions. Word has length 377 [2020-10-14 00:48:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:58,217 INFO L479 AbstractCegarLoop]: Abstraction has 78601 states and 95382 transitions. [2020-10-14 00:48:58,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 78601 states and 95382 transitions. [2020-10-14 00:48:58,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-14 00:48:58,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:58,292 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:58,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:48:58,292 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1782470509, now seen corresponding path program 1 times [2020-10-14 00:48:58,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:58,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817878930] [2020-10-14 00:48:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:03,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-14 00:49:03,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:49:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 00:49:03,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:03,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:49:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 00:49:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 00:49:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:03,536 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:03,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:03,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:03,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:49:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:49:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:49:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:49:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:49:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:49:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 251 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:49:04,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817878930] [2020-10-14 00:49:04,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:04,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:49:04,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229561846] [2020-10-14 00:49:04,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:49:04,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:49:04,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:49:04,073 INFO L87 Difference]: Start difference. First operand 78601 states and 95382 transitions. Second operand 9 states. [2020-10-14 00:49:04,325 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:49:04,536 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:05,652 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:49:06,168 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:49:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:12,047 INFO L93 Difference]: Finished difference Result 179802 states and 231048 transitions. [2020-10-14 00:49:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:49:12,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 379 [2020-10-14 00:49:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:12,346 INFO L225 Difference]: With dead ends: 179802 [2020-10-14 00:49:12,346 INFO L226 Difference]: Without dead ends: 101207 [2020-10-14 00:49:12,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:49:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101207 states. [2020-10-14 00:49:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101207 to 97742. [2020-10-14 00:49:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97742 states. [2020-10-14 00:49:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97742 states to 97742 states and 114720 transitions. [2020-10-14 00:49:16,338 INFO L78 Accepts]: Start accepts. Automaton has 97742 states and 114720 transitions. Word has length 379 [2020-10-14 00:49:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:16,339 INFO L479 AbstractCegarLoop]: Abstraction has 97742 states and 114720 transitions. [2020-10-14 00:49:16,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:49:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 97742 states and 114720 transitions. [2020-10-14 00:49:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-14 00:49:16,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:16,423 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:16,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:49:16,423 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash 277143765, now seen corresponding path program 1 times [2020-10-14 00:49:16,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:16,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718730089] [2020-10-14 00:49:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:20,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:21,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 00:49:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:21,805 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:21,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:21,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:21,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:21,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:21,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:21,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:21,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:49:21,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:21,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:49:21,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:21,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:21,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:21,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:21,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:21,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:49:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:49:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:22,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:49:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 185 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-14 00:49:22,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718730089] [2020-10-14 00:49:22,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:22,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:49:22,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915677371] [2020-10-14 00:49:22,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:49:22,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:22,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:49:22,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:49:22,178 INFO L87 Difference]: Start difference. First operand 97742 states and 114720 transitions. Second operand 5 states. [2020-10-14 00:49:22,680 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:24,973 INFO L93 Difference]: Finished difference Result 193345 states and 226737 transitions. [2020-10-14 00:49:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:49:24,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2020-10-14 00:49:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:25,147 INFO L225 Difference]: With dead ends: 193345 [2020-10-14 00:49:25,148 INFO L226 Difference]: Without dead ends: 96552 [2020-10-14 00:49:25,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:49:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96552 states. [2020-10-14 00:49:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96552 to 96466. [2020-10-14 00:49:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96466 states. [2020-10-14 00:49:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96466 states to 96466 states and 112630 transitions. [2020-10-14 00:49:28,591 INFO L78 Accepts]: Start accepts. Automaton has 96466 states and 112630 transitions. Word has length 395 [2020-10-14 00:49:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:28,591 INFO L479 AbstractCegarLoop]: Abstraction has 96466 states and 112630 transitions. [2020-10-14 00:49:28,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:49:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 96466 states and 112630 transitions. [2020-10-14 00:49:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 00:49:28,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:28,681 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:28,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:49:28,681 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:28,681 INFO L82 PathProgramCache]: Analyzing trace with hash -678313980, now seen corresponding path program 1 times [2020-10-14 00:49:28,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:28,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730612693] [2020-10-14 00:49:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:33,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 00:49:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,284 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:35,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:49:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:49:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:49:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:49:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:35,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:35,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:49:35,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:49:35,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730612693] [2020-10-14 00:49:35,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:35,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:35,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384546460] [2020-10-14 00:49:35,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:35,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:35,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:35,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:35,812 INFO L87 Difference]: Start difference. First operand 96466 states and 112630 transitions. Second operand 7 states. [2020-10-14 00:49:35,941 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:49:36,713 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:49:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:39,106 INFO L93 Difference]: Finished difference Result 199693 states and 232920 transitions. [2020-10-14 00:49:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:49:39,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 00:49:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:39,316 INFO L225 Difference]: With dead ends: 199693 [2020-10-14 00:49:39,316 INFO L226 Difference]: Without dead ends: 103667 [2020-10-14 00:49:39,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103667 states. [2020-10-14 00:49:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103667 to 103509. [2020-10-14 00:49:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103509 states. [2020-10-14 00:49:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103509 states to 103509 states and 117915 transitions. [2020-10-14 00:49:40,952 INFO L78 Accepts]: Start accepts. Automaton has 103509 states and 117915 transitions. Word has length 417 [2020-10-14 00:49:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:40,952 INFO L479 AbstractCegarLoop]: Abstraction has 103509 states and 117915 transitions. [2020-10-14 00:49:40,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 103509 states and 117915 transitions. [2020-10-14 00:49:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-14 00:49:41,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:41,037 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:41,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:49:41,037 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:41,038 INFO L82 PathProgramCache]: Analyzing trace with hash 669646414, now seen corresponding path program 1 times [2020-10-14 00:49:41,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:41,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998350466] [2020-10-14 00:49:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:46,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-14 00:49:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:49:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:49:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:46,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 00:49:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:49:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:46,303 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:46,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:46,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:46,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:49:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:46,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:49:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:49:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:49:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:46,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:46,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:49:46,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:49:47,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998350466] [2020-10-14 00:49:47,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:47,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:47,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168616233] [2020-10-14 00:49:47,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:47,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:47,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:47,196 INFO L87 Difference]: Start difference. First operand 103509 states and 117915 transitions. Second operand 7 states. [2020-10-14 00:49:47,692 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 00:49:48,047 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:49:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:52,580 INFO L93 Difference]: Finished difference Result 208663 states and 245151 transitions. [2020-10-14 00:49:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:49:52,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-14 00:49:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:52,818 INFO L225 Difference]: With dead ends: 208663 [2020-10-14 00:49:52,818 INFO L226 Difference]: Without dead ends: 105622 [2020-10-14 00:49:52,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105622 states. [2020-10-14 00:49:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105622 to 103133. [2020-10-14 00:49:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103133 states. [2020-10-14 00:49:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103133 states to 103133 states and 115713 transitions. [2020-10-14 00:49:54,278 INFO L78 Accepts]: Start accepts. Automaton has 103133 states and 115713 transitions. Word has length 428 [2020-10-14 00:49:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:54,279 INFO L479 AbstractCegarLoop]: Abstraction has 103133 states and 115713 transitions. [2020-10-14 00:49:54,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 103133 states and 115713 transitions. [2020-10-14 00:49:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-14 00:49:54,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:54,362 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:54,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:49:54,362 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash -835151658, now seen corresponding path program 1 times [2020-10-14 00:49:54,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:54,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297162924] [2020-10-14 00:49:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:54,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-14 00:49:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:49:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 00:49:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:49:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 00:49:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:59,598 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:59,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:49:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:49:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:49:59,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 00:49:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 00:49:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:49:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:49:59,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:49:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:49:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:49:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:49:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 00:49:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:49:59,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:49:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:49:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:49:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:59,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:49:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:59,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 00:49:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:00,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:50:00,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 00:50:00,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:00,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 00:50:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 243 proven. 130 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-10-14 00:50:00,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297162924] [2020-10-14 00:50:00,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:00,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:00,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930613809] [2020-10-14 00:50:00,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:00,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:00,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:00,205 INFO L87 Difference]: Start difference. First operand 103133 states and 115713 transitions. Second operand 7 states. [2020-10-14 00:50:00,334 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:02,154 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:04,138 INFO L93 Difference]: Finished difference Result 191363 states and 214456 transitions. [2020-10-14 00:50:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:50:04,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-14 00:50:04,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:04,311 INFO L225 Difference]: With dead ends: 191363 [2020-10-14 00:50:04,311 INFO L226 Difference]: Without dead ends: 103686 [2020-10-14 00:50:04,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103686 states. [2020-10-14 00:50:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103686 to 103135. [2020-10-14 00:50:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103135 states. [2020-10-14 00:50:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103135 states to 103135 states and 115631 transitions. [2020-10-14 00:50:05,552 INFO L78 Accepts]: Start accepts. Automaton has 103135 states and 115631 transitions. Word has length 443 [2020-10-14 00:50:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:05,552 INFO L479 AbstractCegarLoop]: Abstraction has 103135 states and 115631 transitions. [2020-10-14 00:50:05,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 103135 states and 115631 transitions. [2020-10-14 00:50:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-14 00:50:05,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:05,642 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:05,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:50:05,643 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:05,643 INFO L82 PathProgramCache]: Analyzing trace with hash 164679949, now seen corresponding path program 1 times [2020-10-14 00:50:05,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:05,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133072380] [2020-10-14 00:50:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:10,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:10,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 00:50:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:50:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 00:50:10,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:10,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:50:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:50:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:10,930 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:10,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:10,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:11,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:11,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:11,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:50:11,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:11,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:50:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:50:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:50:11,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 00:50:11,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:11,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:50:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:50:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:11,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:11,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:50:11,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:50:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:11,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:50:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:50:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:11,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:11,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:50:11,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:50:11,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:11,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 00:50:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:50:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:11,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:11,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:50:11,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:50:11,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:11,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:50:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-14 00:50:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:11,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:50:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 00:50:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:11,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 00:50:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 281 proven. 126 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-14 00:50:12,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133072380] [2020-10-14 00:50:12,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:12,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:12,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411419943] [2020-10-14 00:50:12,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:12,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:12,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:12,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:12,010 INFO L87 Difference]: Start difference. First operand 103135 states and 115631 transitions. Second operand 7 states. [2020-10-14 00:50:12,349 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 00:50:13,881 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 00:50:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:16,232 INFO L93 Difference]: Finished difference Result 213332 states and 238933 transitions. [2020-10-14 00:50:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:50:16,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-14 00:50:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:16,448 INFO L225 Difference]: With dead ends: 213332 [2020-10-14 00:50:16,448 INFO L226 Difference]: Without dead ends: 123950 [2020-10-14 00:50:16,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:50:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123950 states.