/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=NARROWEST --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/Problem18_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:43:30,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:43:30,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:43:30,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:43:30,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:43:30,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:43:30,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:43:30,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:43:30,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:43:30,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:43:30,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:43:30,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:43:30,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:43:30,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:43:30,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:43:30,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:43:30,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:43:30,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:43:30,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:43:30,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:43:30,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:43:30,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:43:30,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:43:30,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:43:30,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:43:30,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:43:30,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:43:30,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:43:30,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:43:30,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:43:30,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:43:30,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:43:30,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:43:30,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:43:30,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:43:30,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:43:30,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:43:30,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:43:30,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:43:30,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:43:30,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:43:30,413 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 [2020-10-13 09:43:30,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:43:30,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:43:30,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:43:30,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:43:30,453 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:43:30,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:43:30,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:43:30,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:43:30,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:43:30,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:43:30,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:43:30,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:43:30,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:43:30,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:43:30,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:43:30,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:43:30,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:43:30,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:43:30,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:43:30,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:43:30,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:43:30,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:43:30,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:43:30,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:43:30,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:43:30,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:43:30,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:43:30,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:43:30,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:43:30,459 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:43:30,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:43:30,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:43:30,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:43:30,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:43:30,786 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:43:30,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05.c [2020-10-13 09:43:30,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95147143b/1c4ca41b017b499baf4641ef96371abf/FLAG22aaa7eb3 [2020-10-13 09:43:31,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:43:31,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label05.c [2020-10-13 09:43:31,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95147143b/1c4ca41b017b499baf4641ef96371abf/FLAG22aaa7eb3 [2020-10-13 09:43:31,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95147143b/1c4ca41b017b499baf4641ef96371abf [2020-10-13 09:43:31,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:43:31,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:43:31,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:43:31,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:43:31,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:43:31,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:43:31" (1/1) ... [2020-10-13 09:43:31,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b15dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:31, skipping insertion in model container [2020-10-13 09:43:31,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:43:31" (1/1) ... [2020-10-13 09:43:31,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:43:31,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:43:33,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:43:33,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:43:33,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:43:33,475 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:43:33,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33 WrapperNode [2020-10-13 09:43:33,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:43:33,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:43:33,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:43:33,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:43:33,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (1/1) ... [2020-10-13 09:43:33,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:43:33,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:43:33,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:43:33,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:43:33,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (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 [2020-10-13 09:43:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:43:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:43:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:43:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:43:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:43:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:43:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:43:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:43:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:43:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:43:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:43:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:43:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:43:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:43:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:43:39,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:43:39,616 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:43:39,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:43:39 BoogieIcfgContainer [2020-10-13 09:43:39,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:43:39,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:43:39,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:43:39,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:43:39,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:43:31" (1/3) ... [2020-10-13 09:43:39,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f068af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:43:39, skipping insertion in model container [2020-10-13 09:43:39,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:33" (2/3) ... [2020-10-13 09:43:39,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f068af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:43:39, skipping insertion in model container [2020-10-13 09:43:39,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:43:39" (3/3) ... [2020-10-13 09:43:39,636 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label05.c [2020-10-13 09:43:39,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:43:39,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:43:39,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:43:39,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:43:39,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:43:39,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:43:39,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:43:39,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:43:39,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:43:39,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:43:39,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:43:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:43:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 09:43:39,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:39,739 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] [2020-10-13 09:43:39,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:39,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1899410001, now seen corresponding path program 1 times [2020-10-13 09:43:39,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:39,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016606736] [2020-10-13 09:43:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:40,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:40,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 09:43:40,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 09:43:40,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:43:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:43:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:43:40,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:43:40,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:40,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:43:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:43:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:40,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016606736] [2020-10-13 09:43:40,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:43:40,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:43:40,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41767225] [2020-10-13 09:43:40,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:43:40,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:40,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:43:40,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:43:40,392 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:43:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:47,221 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:43:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:47,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 09:43:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:47,265 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:43:47,265 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:43:47,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:47,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:43:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:43:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:43:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:43:47,445 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 44 [2020-10-13 09:43:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:47,446 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:43:47,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:43:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:43:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:43:47,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:47,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:47,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:43:47,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash 171152236, now seen corresponding path program 1 times [2020-10-13 09:43:47,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:47,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203225587] [2020-10-13 09:43:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:48,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:48,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:43:48,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-13 09:43:48,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:43:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:43:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:48,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:48,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:48,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:43:48,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:48,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:48,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:43:48,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:43:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:43:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:48,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203225587] [2020-10-13 09:43:48,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:48,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:48,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608648889] [2020-10-13 09:43:48,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:48,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:48,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:48,524 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-13 09:43:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:56,499 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-13 09:43:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:56,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 09:43:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:56,517 INFO L225 Difference]: With dead ends: 4276 [2020-10-13 09:43:56,518 INFO L226 Difference]: Without dead ends: 2857 [2020-10-13 09:43:56,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-13 09:43:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-13 09:43:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-13 09:43:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-13 09:43:56,597 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 114 [2020-10-13 09:43:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:56,598 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-13 09:43:56,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-13 09:43:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 09:43:56,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:56,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:56,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:43:56,602 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1546759260, now seen corresponding path program 1 times [2020-10-13 09:43:56,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:56,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916221219] [2020-10-13 09:43:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:57,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:57,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 09:43:57,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-13 09:43:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:43:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:43:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:57,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:43:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:57,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:43:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:43:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:43:57,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:57,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916221219] [2020-10-13 09:43:57,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:57,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:57,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332624562] [2020-10-13 09:43:57,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:57,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:57,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:57,657 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-13 09:44:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:07,459 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-13 09:44:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:07,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 09:44:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:07,486 INFO L225 Difference]: With dead ends: 8547 [2020-10-13 09:44:07,487 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:44:07,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:44:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:44:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:44:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7348 transitions. [2020-10-13 09:44:07,628 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7348 transitions. Word has length 118 [2020-10-13 09:44:07,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:07,628 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7348 transitions. [2020-10-13 09:44:07,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7348 transitions. [2020-10-13 09:44:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 09:44:07,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:07,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:07,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:44:07,632 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:07,633 INFO L82 PathProgramCache]: Analyzing trace with hash -360337304, now seen corresponding path program 1 times [2020-10-13 09:44:07,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:07,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618340952] [2020-10-13 09:44:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:07,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:44:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-13 09:44:08,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:44:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:44:08,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:08,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:08,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:08,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:08,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:08,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:08,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:08,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:44:08,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:44:08,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:44:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:08,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618340952] [2020-10-13 09:44:08,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:08,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:08,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457393967] [2020-10-13 09:44:08,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:08,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:08,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:08,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:08,957 INFO L87 Difference]: Start difference. First operand 5696 states and 7348 transitions. Second operand 5 states. [2020-10-13 09:44:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:14,340 INFO L93 Difference]: Finished difference Result 11408 states and 14741 transitions. [2020-10-13 09:44:14,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:14,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 09:44:14,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:14,368 INFO L225 Difference]: With dead ends: 11408 [2020-10-13 09:44:14,369 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:44:14,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:44:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:44:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:44:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7340 transitions. [2020-10-13 09:44:14,507 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7340 transitions. Word has length 132 [2020-10-13 09:44:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:14,507 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7340 transitions. [2020-10-13 09:44:14,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7340 transitions. [2020-10-13 09:44:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 09:44:14,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:14,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:14,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:44:14,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:14,512 INFO L82 PathProgramCache]: Analyzing trace with hash 51287172, now seen corresponding path program 1 times [2020-10-13 09:44:14,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599013267] [2020-10-13 09:44:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:44:15,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-13 09:44:15,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:44:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:44:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:15,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:15,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:15,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:15,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:15,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:15,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:15,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:44:15,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:15,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:44:15,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:44:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:15,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599013267] [2020-10-13 09:44:15,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:15,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:15,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387918519] [2020-10-13 09:44:15,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:15,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:15,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:15,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:15,317 INFO L87 Difference]: Start difference. First operand 5696 states and 7340 transitions. Second operand 5 states. [2020-10-13 09:44:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:25,938 INFO L93 Difference]: Finished difference Result 14231 states and 18828 transitions. [2020-10-13 09:44:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:25,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 09:44:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:25,974 INFO L225 Difference]: With dead ends: 14231 [2020-10-13 09:44:25,974 INFO L226 Difference]: Without dead ends: 8541 [2020-10-13 09:44:25,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-10-13 09:44:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8533. [2020-10-13 09:44:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-13 09:44:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10767 transitions. [2020-10-13 09:44:26,172 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10767 transitions. Word has length 134 [2020-10-13 09:44:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:26,173 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10767 transitions. [2020-10-13 09:44:26,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10767 transitions. [2020-10-13 09:44:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 09:44:26,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:26,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:26,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:44:26,179 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:26,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1755016711, now seen corresponding path program 1 times [2020-10-13 09:44:26,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:26,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637996528] [2020-10-13 09:44:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:27,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:27,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:44:27,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-13 09:44:27,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:44:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:44:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:27,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:27,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:27,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:27,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:27,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:27,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:44:27,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:44:27,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:44:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:27,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637996528] [2020-10-13 09:44:27,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:27,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:27,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414932819] [2020-10-13 09:44:27,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:27,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:27,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:27,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:27,697 INFO L87 Difference]: Start difference. First operand 8533 states and 10767 transitions. Second operand 5 states. [2020-10-13 09:44:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:32,725 INFO L93 Difference]: Finished difference Result 17087 states and 21608 transitions. [2020-10-13 09:44:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:32,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-13 09:44:32,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:32,751 INFO L225 Difference]: With dead ends: 17087 [2020-10-13 09:44:32,751 INFO L226 Difference]: Without dead ends: 8541 [2020-10-13 09:44:32,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-10-13 09:44:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8533. [2020-10-13 09:44:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-13 09:44:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10755 transitions. [2020-10-13 09:44:32,912 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10755 transitions. Word has length 139 [2020-10-13 09:44:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:32,912 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10755 transitions. [2020-10-13 09:44:32,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10755 transitions. [2020-10-13 09:44:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 09:44:32,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:32,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:32,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:44:32,916 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:32,916 INFO L82 PathProgramCache]: Analyzing trace with hash 964637913, now seen corresponding path program 1 times [2020-10-13 09:44:32,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:32,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107509572] [2020-10-13 09:44:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:32,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:33,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:33,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 09:44:33,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-13 09:44:33,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:44:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:44:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:33,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:34,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:34,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:44:34,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:44:34,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:44:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:44:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:34,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107509572] [2020-10-13 09:44:34,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:34,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:34,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71211662] [2020-10-13 09:44:34,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:34,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:34,142 INFO L87 Difference]: Start difference. First operand 8533 states and 10755 transitions. Second operand 5 states. [2020-10-13 09:44:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:42,937 INFO L93 Difference]: Finished difference Result 19905 states and 25726 transitions. [2020-10-13 09:44:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:42,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 09:44:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:42,971 INFO L225 Difference]: With dead ends: 19905 [2020-10-13 09:44:42,971 INFO L226 Difference]: Without dead ends: 11378 [2020-10-13 09:44:42,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11378 states. [2020-10-13 09:44:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 11370. [2020-10-13 09:44:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11370 states. [2020-10-13 09:44:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 14449 transitions. [2020-10-13 09:44:43,185 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 14449 transitions. Word has length 155 [2020-10-13 09:44:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:43,185 INFO L479 AbstractCegarLoop]: Abstraction has 11370 states and 14449 transitions. [2020-10-13 09:44:43,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 14449 transitions. [2020-10-13 09:44:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 09:44:43,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:43,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:43,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:44:43,189 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:43,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:43,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1628105148, now seen corresponding path program 1 times [2020-10-13 09:44:43,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:43,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549511613] [2020-10-13 09:44:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:44:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-13 09:44:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:44:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:44:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:44,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:44:44,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:44,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:44,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:44:44,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:44:44,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:44:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:44,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549511613] [2020-10-13 09:44:44,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:44,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:44,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073508638] [2020-10-13 09:44:44,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:44,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:44,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:44,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:44,470 INFO L87 Difference]: Start difference. First operand 11370 states and 14449 transitions. Second operand 5 states. [2020-10-13 09:44:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:53,554 INFO L93 Difference]: Finished difference Result 25586 states and 33180 transitions. [2020-10-13 09:44:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:53,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 09:44:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:53,602 INFO L225 Difference]: With dead ends: 25586 [2020-10-13 09:44:53,602 INFO L226 Difference]: Without dead ends: 14222 [2020-10-13 09:44:53,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14222 states. [2020-10-13 09:44:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14222 to 14206. [2020-10-13 09:44:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14206 states. [2020-10-13 09:44:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14206 states to 14206 states and 17961 transitions. [2020-10-13 09:44:53,974 INFO L78 Accepts]: Start accepts. Automaton has 14206 states and 17961 transitions. Word has length 166 [2020-10-13 09:44:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:53,975 INFO L479 AbstractCegarLoop]: Abstraction has 14206 states and 17961 transitions. [2020-10-13 09:44:53,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 14206 states and 17961 transitions. [2020-10-13 09:44:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 09:44:53,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:53,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:53,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:44:53,981 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:53,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:53,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1254933526, now seen corresponding path program 1 times [2020-10-13 09:44:53,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:53,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60030845] [2020-10-13 09:44:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:54,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:54,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 09:44:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-13 09:44:54,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:44:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:44:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:54,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:54,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:54,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:54,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:54,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:54,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:54,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:44:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:44:54,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:54,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:44:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:54,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:44:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:44:54,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:44:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:44:55,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60030845] [2020-10-13 09:44:55,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:55,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:55,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407455637] [2020-10-13 09:44:55,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:55,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:55,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:55,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:55,034 INFO L87 Difference]: Start difference. First operand 14206 states and 17961 transitions. Second operand 5 states. [2020-10-13 09:45:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:06,055 INFO L93 Difference]: Finished difference Result 34800 states and 45223 transitions. [2020-10-13 09:45:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:06,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-13 09:45:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:06,130 INFO L225 Difference]: With dead ends: 34800 [2020-10-13 09:45:06,130 INFO L226 Difference]: Without dead ends: 20600 [2020-10-13 09:45:06,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20600 states. [2020-10-13 09:45:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20600 to 20592. [2020-10-13 09:45:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20592 states. [2020-10-13 09:45:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20592 states to 20592 states and 26680 transitions. [2020-10-13 09:45:06,588 INFO L78 Accepts]: Start accepts. Automaton has 20592 states and 26680 transitions. Word has length 205 [2020-10-13 09:45:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:06,589 INFO L479 AbstractCegarLoop]: Abstraction has 20592 states and 26680 transitions. [2020-10-13 09:45:06,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 20592 states and 26680 transitions. [2020-10-13 09:45:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 09:45:06,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:06,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:06,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:45:06,617 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash -370044847, now seen corresponding path program 1 times [2020-10-13 09:45:06,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:06,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239994236] [2020-10-13 09:45:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:08,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:08,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-13 09:45:08,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2064 [2020-10-13 09:45:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 369 [2020-10-13 09:45:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:45:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:08,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:08,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:08,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:08,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:09,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 09:45:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 09:45:09,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 354 [2020-10-13 09:45:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:09,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:09,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:45:09,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:45:09,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:45:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:09,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239994236] [2020-10-13 09:45:09,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:09,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:09,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683155826] [2020-10-13 09:45:09,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:09,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:09,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:09,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:09,784 INFO L87 Difference]: Start difference. First operand 20592 states and 26680 transitions. Second operand 5 states. [2020-10-13 09:45:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:19,230 INFO L93 Difference]: Finished difference Result 53920 states and 71081 transitions. [2020-10-13 09:45:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:19,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 404 [2020-10-13 09:45:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:19,325 INFO L225 Difference]: With dead ends: 53920 [2020-10-13 09:45:19,326 INFO L226 Difference]: Without dead ends: 33334 [2020-10-13 09:45:19,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33334 states. [2020-10-13 09:45:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33334 to 32624. [2020-10-13 09:45:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32624 states. [2020-10-13 09:45:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32624 states to 32624 states and 40623 transitions. [2020-10-13 09:45:19,787 INFO L78 Accepts]: Start accepts. Automaton has 32624 states and 40623 transitions. Word has length 404 [2020-10-13 09:45:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:19,788 INFO L479 AbstractCegarLoop]: Abstraction has 32624 states and 40623 transitions. [2020-10-13 09:45:19,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 32624 states and 40623 transitions. [2020-10-13 09:45:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-13 09:45:19,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:19,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:19,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:45:19,831 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1360581572, now seen corresponding path program 1 times [2020-10-13 09:45:19,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:19,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234881302] [2020-10-13 09:45:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:20,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:24,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:24,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-13 09:45:24,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:45:24,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:45:24,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-13 09:45:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:45:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:25,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:25,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:25,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:45:25,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:25,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:25,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:45:25,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:45:25,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:45:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:25,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:45:25,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-13 09:45:25,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 386 [2020-10-13 09:45:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:25,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:25,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:45:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 09:45:25,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234881302] [2020-10-13 09:45:25,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:25,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:25,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335178326] [2020-10-13 09:45:25,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:25,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:25,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:25,921 INFO L87 Difference]: Start difference. First operand 32624 states and 40623 transitions. Second operand 5 states. [2020-10-13 09:45:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:37,262 INFO L93 Difference]: Finished difference Result 77284 states and 98604 transitions. [2020-10-13 09:45:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:37,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 526 [2020-10-13 09:45:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:37,357 INFO L225 Difference]: With dead ends: 77284 [2020-10-13 09:45:37,357 INFO L226 Difference]: Without dead ends: 44666 [2020-10-13 09:45:37,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44666 states. [2020-10-13 09:45:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44666 to 42552. [2020-10-13 09:45:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42552 states. [2020-10-13 09:45:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42552 states to 42552 states and 52032 transitions. [2020-10-13 09:45:38,306 INFO L78 Accepts]: Start accepts. Automaton has 42552 states and 52032 transitions. Word has length 526 [2020-10-13 09:45:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:38,308 INFO L479 AbstractCegarLoop]: Abstraction has 42552 states and 52032 transitions. [2020-10-13 09:45:38,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 42552 states and 52032 transitions. [2020-10-13 09:45:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-13 09:45:38,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:38,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:38,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:45:38,359 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:38,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1890334444, now seen corresponding path program 1 times [2020-10-13 09:45:38,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:38,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857683675] [2020-10-13 09:45:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:43,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-13 09:45:43,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:45:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:45:43,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-13 09:45:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:45:43,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:43,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:43,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:43,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:43,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:43,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:45:43,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:45:43,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:45:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:45:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 09:45:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:45:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:44,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:44,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:45:44,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:45:44,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:45:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:45:44,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857683675] [2020-10-13 09:45:44,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:44,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:44,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142837475] [2020-10-13 09:45:44,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:44,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:44,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:44,638 INFO L87 Difference]: Start difference. First operand 42552 states and 52032 transitions. Second operand 5 states. [2020-10-13 09:45:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:50,743 INFO L93 Difference]: Finished difference Result 85135 states and 104217 transitions. [2020-10-13 09:45:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:50,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 534 [2020-10-13 09:45:50,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:50,840 INFO L225 Difference]: With dead ends: 85135 [2020-10-13 09:45:50,840 INFO L226 Difference]: Without dead ends: 42560 [2020-10-13 09:45:50,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42560 states. [2020-10-13 09:45:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42560 to 42552. [2020-10-13 09:45:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42552 states. [2020-10-13 09:45:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42552 states to 42552 states and 52026 transitions. [2020-10-13 09:45:51,537 INFO L78 Accepts]: Start accepts. Automaton has 42552 states and 52026 transitions. Word has length 534 [2020-10-13 09:45:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:51,538 INFO L479 AbstractCegarLoop]: Abstraction has 42552 states and 52026 transitions. [2020-10-13 09:45:51,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 42552 states and 52026 transitions. [2020-10-13 09:45:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-13 09:45:51,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:51,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:51,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:45:51,591 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash -196480868, now seen corresponding path program 1 times [2020-10-13 09:45:51,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:51,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933798685] [2020-10-13 09:45:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:56,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-13 09:45:56,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:45:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 09:45:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 537 [2020-10-13 09:45:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:45:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:56,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:56,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:56,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:45:56,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:57,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:57,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:45:57,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:45:57,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:57,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:57,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:45:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:45:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-13 09:45:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-13 09:45:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:45:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:45:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:45:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:45:57,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933798685] [2020-10-13 09:45:57,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:57,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:57,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49383927] [2020-10-13 09:45:57,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:57,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:57,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:57,988 INFO L87 Difference]: Start difference. First operand 42552 states and 52026 transitions. Second operand 5 states. [2020-10-13 09:46:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:04,858 INFO L93 Difference]: Finished difference Result 85125 states and 104191 transitions. [2020-10-13 09:46:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:04,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 570 [2020-10-13 09:46:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:04,945 INFO L225 Difference]: With dead ends: 85125 [2020-10-13 09:46:04,945 INFO L226 Difference]: Without dead ends: 42560 [2020-10-13 09:46:04,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42560 states. [2020-10-13 09:46:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42560 to 42552. [2020-10-13 09:46:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42552 states. [2020-10-13 09:46:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42552 states to 42552 states and 52022 transitions. [2020-10-13 09:46:05,560 INFO L78 Accepts]: Start accepts. Automaton has 42552 states and 52022 transitions. Word has length 570 [2020-10-13 09:46:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:05,561 INFO L479 AbstractCegarLoop]: Abstraction has 42552 states and 52022 transitions. [2020-10-13 09:46:05,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 42552 states and 52022 transitions. [2020-10-13 09:46:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-13 09:46:05,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:05,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:05,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:46:05,619 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1941733088, now seen corresponding path program 1 times [2020-10-13 09:46:05,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:05,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772028013] [2020-10-13 09:46:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-13 09:46:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:46:10,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 539 [2020-10-13 09:46:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:46:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:10,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:10,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:46:10,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:10,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:46:10,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:46:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-13 09:46:11,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 09:46:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 448 [2020-10-13 09:46:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:11,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:11,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:46:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:46:12,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772028013] [2020-10-13 09:46:12,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:12,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:12,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781572460] [2020-10-13 09:46:12,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:12,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:12,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:12,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:12,575 INFO L87 Difference]: Start difference. First operand 42552 states and 52022 transitions. Second operand 5 states. [2020-10-13 09:46:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:24,253 INFO L93 Difference]: Finished difference Result 91478 states and 114590 transitions. [2020-10-13 09:46:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:24,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 572 [2020-10-13 09:46:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:24,352 INFO L225 Difference]: With dead ends: 91478 [2020-10-13 09:46:24,352 INFO L226 Difference]: Without dead ends: 48932 [2020-10-13 09:46:24,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48932 states. [2020-10-13 09:46:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48932 to 47520. [2020-10-13 09:46:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47520 states. [2020-10-13 09:46:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47520 states to 47520 states and 57397 transitions. [2020-10-13 09:46:25,035 INFO L78 Accepts]: Start accepts. Automaton has 47520 states and 57397 transitions. Word has length 572 [2020-10-13 09:46:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:25,036 INFO L479 AbstractCegarLoop]: Abstraction has 47520 states and 57397 transitions. [2020-10-13 09:46:25,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:25,037 INFO L276 IsEmpty]: Start isEmpty. Operand 47520 states and 57397 transitions. [2020-10-13 09:46:25,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2020-10-13 09:46:25,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:25,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:25,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:46:25,068 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:25,069 INFO L82 PathProgramCache]: Analyzing trace with hash -597945047, now seen corresponding path program 1 times [2020-10-13 09:46:25,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:25,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031740426] [2020-10-13 09:46:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:25,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 556 [2020-10-13 09:46:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:46:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:27,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:27,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 541 [2020-10-13 09:46:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:28,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:28,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:46:28,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:46:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-13 09:46:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:46:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:28,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:28,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:46:28,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:46:28,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:46:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:28,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031740426] [2020-10-13 09:46:28,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:28,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:28,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919808125] [2020-10-13 09:46:28,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:28,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:28,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:28,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:28,540 INFO L87 Difference]: Start difference. First operand 47520 states and 57397 transitions. Second operand 5 states. [2020-10-13 09:46:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:37,742 INFO L93 Difference]: Finished difference Result 95068 states and 115051 transitions. [2020-10-13 09:46:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:37,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 592 [2020-10-13 09:46:37,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:37,834 INFO L225 Difference]: With dead ends: 95068 [2020-10-13 09:46:37,834 INFO L226 Difference]: Without dead ends: 47528 [2020-10-13 09:46:37,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47528 states. [2020-10-13 09:46:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47528 to 47520. [2020-10-13 09:46:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47520 states. [2020-10-13 09:46:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47520 states to 47520 states and 57362 transitions. [2020-10-13 09:46:38,581 INFO L78 Accepts]: Start accepts. Automaton has 47520 states and 57362 transitions. Word has length 592 [2020-10-13 09:46:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:38,582 INFO L479 AbstractCegarLoop]: Abstraction has 47520 states and 57362 transitions. [2020-10-13 09:46:38,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 47520 states and 57362 transitions. [2020-10-13 09:46:38,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-13 09:46:38,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:38,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:38,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:46:38,617 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:38,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1704492313, now seen corresponding path program 1 times [2020-10-13 09:46:38,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:38,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178364970] [2020-10-13 09:46:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-13 09:46:42,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:42,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3674 [2020-10-13 09:46:42,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:46:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 560 [2020-10-13 09:46:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:42,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:43,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:43,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:46:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-13 09:46:43,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:46:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 561 [2020-10-13 09:46:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:46:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 09:46:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:46:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:43,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:46:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:46:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:46:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:46:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:44,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178364970] [2020-10-13 09:46:44,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:46:44,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:46:44,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466844982] [2020-10-13 09:46:44,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:44,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:45,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:45,000 INFO L87 Difference]: Start difference. First operand 47520 states and 57362 transitions. Second operand 7 states. [2020-10-13 09:46:55,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:55,852 INFO L93 Difference]: Finished difference Result 97430 states and 118630 transitions. [2020-10-13 09:46:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:46:55,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 600 [2020-10-13 09:46:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:55,943 INFO L225 Difference]: With dead ends: 97430 [2020-10-13 09:46:55,943 INFO L226 Difference]: Without dead ends: 47081 [2020-10-13 09:46:55,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:46:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47081 states. [2020-10-13 09:46:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47081 to 47031. [2020-10-13 09:46:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47031 states. [2020-10-13 09:46:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47031 states to 47031 states and 54325 transitions. [2020-10-13 09:46:56,491 INFO L78 Accepts]: Start accepts. Automaton has 47031 states and 54325 transitions. Word has length 600 [2020-10-13 09:46:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:56,492 INFO L479 AbstractCegarLoop]: Abstraction has 47031 states and 54325 transitions. [2020-10-13 09:46:56,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:46:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 47031 states and 54325 transitions. [2020-10-13 09:46:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2020-10-13 09:46:56,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:56,536 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:56,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:46:56,537 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:56,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1054246050, now seen corresponding path program 1 times [2020-10-13 09:46:56,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:56,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47152598] [2020-10-13 09:46:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 779 [2020-10-13 09:47:01,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 09:47:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:47:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:47:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:47:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:01,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:47:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:01,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:47:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:47:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:47:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:47:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:02,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:02,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:47:02,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:02,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-13 09:47:02,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:47:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:47:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:47:03,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 09:47:03,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:47:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:47:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:47:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:47:03,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:03,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:47:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:03,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:03,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:47:03,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:47:03,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:03,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 111 proven. 151 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 09:47:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47152598] [2020-10-13 09:47:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:04,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:47:04,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212128867] [2020-10-13 09:47:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:47:04,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:47:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:47:04,320 INFO L87 Difference]: Start difference. First operand 47031 states and 54325 transitions. Second operand 7 states.