/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:19:43,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:19:43,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:19:43,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:19:43,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:19:43,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:19:43,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:19:43,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:19:43,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:19:43,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:19:43,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:19:43,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:19:43,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:19:43,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:19:43,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:19:43,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:19:43,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:19:43,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:19:43,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:19:43,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:19:43,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:19:43,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:19:43,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:19:43,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:19:43,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:19:43,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:19:43,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:19:43,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:19:43,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:19:43,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:19:43,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:19:43,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:19:43,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:19:43,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:19:43,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:19:43,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:19:43,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:19:43,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:19:43,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:19:43,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:19:43,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:19:43,628 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 [2020-10-12 11:19:43,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:19:43,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:19:43,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:19:43,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:19:43,668 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:19:43,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:19:43,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:19:43,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:19:43,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:19:43,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:19:43,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:19:43,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:19:43,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:19:43,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:19:43,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:19:43,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:19:43,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:19:43,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:19:43,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:19:43,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:19:43,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:19:43,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:19:43,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:19:43,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:19:43,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:19:43,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:19:43,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:19:43,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:19:43,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:19:43,674 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:19:43,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:19:43,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:19:43,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:19:44,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:19:44,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:19:44,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18.c [2020-10-12 11:19:44,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/071cdd8a6/d5c093aec7a340539127243676cbe47e/FLAG0c4f44139 [2020-10-12 11:19:44,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:19:44,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label18.c [2020-10-12 11:19:44,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/071cdd8a6/d5c093aec7a340539127243676cbe47e/FLAG0c4f44139 [2020-10-12 11:19:44,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/071cdd8a6/d5c093aec7a340539127243676cbe47e [2020-10-12 11:19:44,959 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:19:44,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:19:44,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:19:44,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:19:44,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:19:44,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:19:44" (1/1) ... [2020-10-12 11:19:44,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:44, skipping insertion in model container [2020-10-12 11:19:44,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:19:44" (1/1) ... [2020-10-12 11:19:44,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:19:45,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:19:45,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:19:45,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:19:46,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:19:46,427 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:19:46,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46 WrapperNode [2020-10-12 11:19:46,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:19:46,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:19:46,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:19:46,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:19:46,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (1/1) ... [2020-10-12 11:19:46,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:19:46,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:19:46,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:19:46,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:19:46,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (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 [2020-10-12 11:19:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:19:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:19:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:19:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:19:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:19:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:19:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:19:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:19:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:19:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:19:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:19:48,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:19:48,370 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:19:48,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:19:48 BoogieIcfgContainer [2020-10-12 11:19:48,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:19:48,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:19:48,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:19:48,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:19:48,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:19:44" (1/3) ... [2020-10-12 11:19:48,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d64098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:19:48, skipping insertion in model container [2020-10-12 11:19:48,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:46" (2/3) ... [2020-10-12 11:19:48,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d64098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:19:48, skipping insertion in model container [2020-10-12 11:19:48,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:19:48" (3/3) ... [2020-10-12 11:19:48,385 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label18.c [2020-10-12 11:19:48,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:19:48,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:19:48,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:19:48,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:19:48,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:19:48,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:19:48,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:19:48,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:19:48,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:19:48,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:19:48,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:19:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:19:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 11:19:48,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:48,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:48,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:48,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1923222136, now seen corresponding path program 1 times [2020-10-12 11:19:48,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:48,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900807770] [2020-10-12 11:19:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:50,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:53,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 11:19:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4409 [2020-10-12 11:19:53,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:19:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:19:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:19:54,384 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 63 [2020-10-12 11:19:54,826 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-12 11:19:54,978 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-12 11:19:55,110 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-12 11:19:55,365 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-12 11:19:55,592 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:55,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:55,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:55,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:55,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:55,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:19:55,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:55,819 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-12 11:19:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:19:56,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900807770] [2020-10-12 11:19:56,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:19:56,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 11:19:56,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771653241] [2020-10-12 11:19:56,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 11:19:56,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:56,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 11:19:56,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:19:56,480 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-12 11:19:56,820 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:19:57,468 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 168 [2020-10-12 11:19:58,063 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 168 [2020-10-12 11:19:58,809 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 178 [2020-10-12 11:19:59,513 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 177 [2020-10-12 11:20:00,380 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 176 [2020-10-12 11:20:01,370 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 175 [2020-10-12 11:20:03,727 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 174 [2020-10-12 11:20:04,722 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 172 [2020-10-12 11:20:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:06,787 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:20:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:20:06,790 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2020-10-12 11:20:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:06,818 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:20:06,818 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:20:06,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:20:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:20:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:20:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:20:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:20:06,950 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 209 [2020-10-12 11:20:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:06,955 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:20:06,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 11:20:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:20:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-12 11:20:06,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:06,978 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:20:06,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:20:06,979 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:06,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash -92820881, now seen corresponding path program 1 times [2020-10-12 11:20:06,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:06,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695873766] [2020-10-12 11:20:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:11,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 11:20:11,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:11,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4789 [2020-10-12 11:20:11,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:11,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:20:11,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:11,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:20:11,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:13,028 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-12 11:20:13,217 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-12 11:20:13,710 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2020-10-12 11:20:14,277 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 90 [2020-10-12 11:20:14,656 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 77 [2020-10-12 11:20:15,070 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 68 [2020-10-12 11:20:15,362 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 52 [2020-10-12 11:20:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:15,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:15,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:15,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:20:15,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:16,132 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-12 11:20:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:20:17,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695873766] [2020-10-12 11:20:17,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:17,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:20:17,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273330360] [2020-10-12 11:20:17,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:20:17,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:17,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:20:17,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:20:17,158 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:20:17,461 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 11:20:18,125 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 93 [2020-10-12 11:20:18,489 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2020-10-12 11:20:18,878 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2020-10-12 11:20:19,580 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 171 [2020-10-12 11:20:20,333 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 179 [2020-10-12 11:20:21,580 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 224 DAG size of output: 180 [2020-10-12 11:20:23,524 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 228 DAG size of output: 179 [2020-10-12 11:20:26,003 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 230 DAG size of output: 177 [2020-10-12 11:20:28,900 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 176 [2020-10-12 11:20:29,847 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 174 [2020-10-12 11:20:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:31,682 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-12 11:20:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:20:31,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 220 [2020-10-12 11:20:31,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:31,688 INFO L225 Difference]: With dead ends: 756 [2020-10-12 11:20:31,689 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 11:20:31,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2020-10-12 11:20:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 11:20:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-12 11:20:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:20:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-12 11:20:31,723 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 220 [2020-10-12 11:20:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:31,724 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-12 11:20:31,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:20:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-12 11:20:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 11:20:31,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:31,728 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:20:31,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:20:31,728 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash -784522333, now seen corresponding path program 1 times [2020-10-12 11:20:31,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:31,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791415506] [2020-10-12 11:20:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 11:20:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-12 11:20:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-12 11:20:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:33,846 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:33,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:34,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:34,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:34,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 11:20:34,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:20:34,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791415506] [2020-10-12 11:20:34,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:34,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:20:34,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860371791] [2020-10-12 11:20:34,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:20:34,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:20:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:20:34,312 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 6 states. [2020-10-12 11:20:34,504 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:37,007 INFO L93 Difference]: Finished difference Result 988 states and 1470 transitions. [2020-10-12 11:20:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:20:37,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-10-12 11:20:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:37,014 INFO L225 Difference]: With dead ends: 988 [2020-10-12 11:20:37,014 INFO L226 Difference]: Without dead ends: 745 [2020-10-12 11:20:37,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:37,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-10-12 11:20:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 731. [2020-10-12 11:20:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 11:20:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1027 transitions. [2020-10-12 11:20:37,048 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1027 transitions. Word has length 230 [2020-10-12 11:20:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:37,048 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1027 transitions. [2020-10-12 11:20:37,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:20:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1027 transitions. [2020-10-12 11:20:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 11:20:37,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:37,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-12 11:20:37,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:20:37,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash 293413904, now seen corresponding path program 1 times [2020-10-12 11:20:37,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:37,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286123372] [2020-10-12 11:20:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3518 [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:20:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:40,816 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:40,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:40,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:40,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:20:40,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:40,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:40,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:40,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:20:40,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:20:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:20:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:20:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:20:41,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286123372] [2020-10-12 11:20:41,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:41,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:20:41,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235034613] [2020-10-12 11:20:41,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:20:41,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:20:41,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:20:41,085 INFO L87 Difference]: Start difference. First operand 731 states and 1027 transitions. Second operand 8 states. [2020-10-12 11:20:41,223 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:44,100 INFO L93 Difference]: Finished difference Result 1682 states and 2566 transitions. [2020-10-12 11:20:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:20:44,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-10-12 11:20:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:44,110 INFO L225 Difference]: With dead ends: 1682 [2020-10-12 11:20:44,110 INFO L226 Difference]: Without dead ends: 1217 [2020-10-12 11:20:44,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:20:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-12 11:20:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1199. [2020-10-12 11:20:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2020-10-12 11:20:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1780 transitions. [2020-10-12 11:20:44,168 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1780 transitions. Word has length 239 [2020-10-12 11:20:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:44,168 INFO L479 AbstractCegarLoop]: Abstraction has 1199 states and 1780 transitions. [2020-10-12 11:20:44,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:20:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1780 transitions. [2020-10-12 11:20:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-12 11:20:44,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:44,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:20:44,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:20:44,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1599328908, now seen corresponding path program 1 times [2020-10-12 11:20:44,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:44,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601785806] [2020-10-12 11:20:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:45,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-12 11:20:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-12 11:20:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 11:20:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:20:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 11:20:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:46,577 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:46,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:46,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:46,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:20:46,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 11:20:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:20:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:46,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:46,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:46,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:46,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:20:46,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:20:47,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601785806] [2020-10-12 11:20:47,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:47,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:20:47,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51907] [2020-10-12 11:20:47,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:20:47,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:47,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:20:47,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:47,112 INFO L87 Difference]: Start difference. First operand 1199 states and 1780 transitions. Second operand 7 states. [2020-10-12 11:20:47,415 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:20:48,167 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 11:20:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:50,923 INFO L93 Difference]: Finished difference Result 3082 states and 4947 transitions. [2020-10-12 11:20:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:20:50,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-12 11:20:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:50,941 INFO L225 Difference]: With dead ends: 3082 [2020-10-12 11:20:50,941 INFO L226 Difference]: Without dead ends: 1909 [2020-10-12 11:20:50,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:20:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-10-12 11:20:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1765. [2020-10-12 11:20:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-10-12 11:20:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2382 transitions. [2020-10-12 11:20:51,012 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2382 transitions. Word has length 241 [2020-10-12 11:20:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:51,013 INFO L479 AbstractCegarLoop]: Abstraction has 1765 states and 2382 transitions. [2020-10-12 11:20:51,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:20:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2382 transitions. [2020-10-12 11:20:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 11:20:51,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:51,022 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:51,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:20:51,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1982239788, now seen corresponding path program 1 times [2020-10-12 11:20:51,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:51,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857172641] [2020-10-12 11:20:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:56,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 11:20:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:20:56,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:20:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:20:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 11:20:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:56,307 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:56,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:56,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:20:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:56,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:20:56,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:20:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:20:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:20:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:56,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 11:20:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:20:56,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857172641] [2020-10-12 11:20:56,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:56,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:20:56,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528242882] [2020-10-12 11:20:56,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:20:56,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:20:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:56,770 INFO L87 Difference]: Start difference. First operand 1765 states and 2382 transitions. Second operand 7 states. [2020-10-12 11:20:57,062 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:20:57,360 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:01,727 INFO L93 Difference]: Finished difference Result 4761 states and 7161 transitions. [2020-10-12 11:21:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:21:01,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-12 11:21:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:01,751 INFO L225 Difference]: With dead ends: 4761 [2020-10-12 11:21:01,752 INFO L226 Difference]: Without dead ends: 3262 [2020-10-12 11:21:01,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:21:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2020-10-12 11:21:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3186. [2020-10-12 11:21:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2020-10-12 11:21:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4635 transitions. [2020-10-12 11:21:01,877 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4635 transitions. Word has length 252 [2020-10-12 11:21:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:01,877 INFO L479 AbstractCegarLoop]: Abstraction has 3186 states and 4635 transitions. [2020-10-12 11:21:01,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4635 transitions. [2020-10-12 11:21:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 11:21:01,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:01,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:01,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:21:01,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:01,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:01,891 INFO L82 PathProgramCache]: Analyzing trace with hash 605197912, now seen corresponding path program 1 times [2020-10-12 11:21:01,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:01,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857198369] [2020-10-12 11:21:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:06,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:06,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 11:21:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4587 [2020-10-12 11:21:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:21:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 11:21:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:06,682 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:06,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:06,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:06,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:06,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:21:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:06,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 11:21:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:07,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:07,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:21:07,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:07,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:21:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:21:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:21:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:21:07,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857198369] [2020-10-12 11:21:07,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:07,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:21:07,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367070844] [2020-10-12 11:21:07,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:07,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:07,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:07,102 INFO L87 Difference]: Start difference. First operand 3186 states and 4635 transitions. Second operand 7 states. [2020-10-12 11:21:07,318 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:08,845 INFO L93 Difference]: Finished difference Result 5522 states and 8130 transitions. [2020-10-12 11:21:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:21:08,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-12 11:21:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:08,861 INFO L225 Difference]: With dead ends: 5522 [2020-10-12 11:21:08,862 INFO L226 Difference]: Without dead ends: 3041 [2020-10-12 11:21:08,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2020-10-12 11:21:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3033. [2020-10-12 11:21:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3033 states. [2020-10-12 11:21:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4285 transitions. [2020-10-12 11:21:08,954 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4285 transitions. Word has length 258 [2020-10-12 11:21:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:08,954 INFO L479 AbstractCegarLoop]: Abstraction has 3033 states and 4285 transitions. [2020-10-12 11:21:08,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4285 transitions. [2020-10-12 11:21:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 11:21:08,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:08,965 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:08,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:21:08,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2002507332, now seen corresponding path program 1 times [2020-10-12 11:21:08,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:08,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076437649] [2020-10-12 11:21:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:13,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:21:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:14,199 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:14,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:14,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:14,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:21:14,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:14,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:14,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:14,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:14,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:14,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 11:21:14,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:21:14,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:21:14,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 11:21:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:21:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 11:21:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:14,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:14,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:21:14,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:21:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-12 11:21:14,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076437649] [2020-10-12 11:21:14,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:14,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:14,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733638848] [2020-10-12 11:21:14,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:14,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:14,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:14,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:14,749 INFO L87 Difference]: Start difference. First operand 3033 states and 4285 transitions. Second operand 7 states. [2020-10-12 11:21:14,974 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:21:17,016 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:21:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:18,397 INFO L93 Difference]: Finished difference Result 6880 states and 9934 transitions. [2020-10-12 11:21:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:21:18,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-12 11:21:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:18,419 INFO L225 Difference]: With dead ends: 6880 [2020-10-12 11:21:18,419 INFO L226 Difference]: Without dead ends: 4556 [2020-10-12 11:21:18,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:21:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-10-12 11:21:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4298. [2020-10-12 11:21:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4298 states. [2020-10-12 11:21:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 6189 transitions. [2020-10-12 11:21:18,536 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 6189 transitions. Word has length 262 [2020-10-12 11:21:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:18,537 INFO L479 AbstractCegarLoop]: Abstraction has 4298 states and 6189 transitions. [2020-10-12 11:21:18,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 6189 transitions. [2020-10-12 11:21:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-12 11:21:18,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:18,550 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2020-10-12 11:21:18,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:21:18,551 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:18,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2097297205, now seen corresponding path program 2 times [2020-10-12 11:21:18,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:18,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656308455] [2020-10-12 11:21:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:23,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:23,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-12 11:21:23,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:21:23,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:23,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:21:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:21:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:23,811 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:23,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:23,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:21:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:24,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:24,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:24,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 11:21:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:21:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:21:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:21:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 11:21:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 11:21:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:21:24,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:21:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 61 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 11:21:24,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656308455] [2020-10-12 11:21:24,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:24,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:24,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996156512] [2020-10-12 11:21:24,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:24,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:24,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:24,206 INFO L87 Difference]: Start difference. First operand 4298 states and 6189 transitions. Second operand 7 states. [2020-10-12 11:21:24,342 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:21:24,998 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:21:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:26,969 INFO L93 Difference]: Finished difference Result 12404 states and 19012 transitions. [2020-10-12 11:21:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:21:26,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-12 11:21:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:27,021 INFO L225 Difference]: With dead ends: 12404 [2020-10-12 11:21:27,022 INFO L226 Difference]: Without dead ends: 8372 [2020-10-12 11:21:27,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:21:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2020-10-12 11:21:27,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 7983. [2020-10-12 11:21:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7983 states. [2020-10-12 11:21:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 10727 transitions. [2020-10-12 11:21:27,260 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 10727 transitions. Word has length 273 [2020-10-12 11:21:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:27,260 INFO L479 AbstractCegarLoop]: Abstraction has 7983 states and 10727 transitions. [2020-10-12 11:21:27,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 10727 transitions. [2020-10-12 11:21:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-12 11:21:27,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:27,293 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:21:27,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:21:27,294 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:27,294 INFO L82 PathProgramCache]: Analyzing trace with hash 189609494, now seen corresponding path program 1 times [2020-10-12 11:21:27,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:27,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630003422] [2020-10-12 11:21:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:30,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 11:21:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:21:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 11:21:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:21:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-12 11:21:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:32,852 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:32,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:32,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:21:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:21:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 11:21:33,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:21:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:21:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:21:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-12 11:21:33,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:21:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:21:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:21:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 11:21:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 14 proven. 100 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:21:33,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630003422] [2020-10-12 11:21:33,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:33,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:21:33,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897896970] [2020-10-12 11:21:33,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 11:21:33,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 11:21:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:21:33,882 INFO L87 Difference]: Start difference. First operand 7983 states and 10727 transitions. Second operand 11 states. [2020-10-12 11:21:34,029 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:34,950 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 139 [2020-10-12 11:21:38,108 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 141 [2020-10-12 11:21:39,334 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 11:21:40,267 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 11:21:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:40,413 INFO L93 Difference]: Finished difference Result 23598 states and 33940 transitions. [2020-10-12 11:21:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 11:21:40,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 299 [2020-10-12 11:21:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:40,479 INFO L225 Difference]: With dead ends: 23598 [2020-10-12 11:21:40,479 INFO L226 Difference]: Without dead ends: 16682 [2020-10-12 11:21:40,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-10-12 11:21:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16682 states. [2020-10-12 11:21:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16682 to 15116. [2020-10-12 11:21:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15116 states. [2020-10-12 11:21:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15116 states to 15116 states and 20331 transitions. [2020-10-12 11:21:41,082 INFO L78 Accepts]: Start accepts. Automaton has 15116 states and 20331 transitions. Word has length 299 [2020-10-12 11:21:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:41,083 INFO L479 AbstractCegarLoop]: Abstraction has 15116 states and 20331 transitions. [2020-10-12 11:21:41,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 11:21:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 15116 states and 20331 transitions. [2020-10-12 11:21:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 11:21:41,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:41,128 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-12 11:21:41,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:21:41,128 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash -748344707, now seen corresponding path program 1 times [2020-10-12 11:21:41,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:41,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320653589] [2020-10-12 11:21:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:42,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 11:21:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:42,792 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:42,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:21:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:21:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:43,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:43,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:43,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:21:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 107 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:21:43,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320653589] [2020-10-12 11:21:43,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:43,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:43,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548767843] [2020-10-12 11:21:43,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:43,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:43,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:43,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:43,153 INFO L87 Difference]: Start difference. First operand 15116 states and 20331 transitions. Second operand 7 states. [2020-10-12 11:21:43,280 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:44,009 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:46,383 INFO L93 Difference]: Finished difference Result 44543 states and 63838 transitions. [2020-10-12 11:21:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:21:46,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-12 11:21:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:46,491 INFO L225 Difference]: With dead ends: 44543 [2020-10-12 11:21:46,491 INFO L226 Difference]: Without dead ends: 29693 [2020-10-12 11:21:46,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:21:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29693 states. [2020-10-12 11:21:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29693 to 29437. [2020-10-12 11:21:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29437 states. [2020-10-12 11:21:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29437 states to 29437 states and 42762 transitions. [2020-10-12 11:21:47,228 INFO L78 Accepts]: Start accepts. Automaton has 29437 states and 42762 transitions. Word has length 320 [2020-10-12 11:21:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:47,228 INFO L479 AbstractCegarLoop]: Abstraction has 29437 states and 42762 transitions. [2020-10-12 11:21:47,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 29437 states and 42762 transitions. [2020-10-12 11:21:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-12 11:21:47,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:47,317 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:47,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:21:47,318 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:47,318 INFO L82 PathProgramCache]: Analyzing trace with hash 695191895, now seen corresponding path program 1 times [2020-10-12 11:21:47,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:47,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110324445] [2020-10-12 11:21:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:48,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-12 11:21:48,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-12 11:21:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:21:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 11:21:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 11:21:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,072 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:49,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:21:49,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:21:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 11:21:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:21:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:21:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 11:21:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 157 proven. 62 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:21:49,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110324445] [2020-10-12 11:21:49,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:49,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:49,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963806345] [2020-10-12 11:21:49,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:49,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:49,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:49,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:49,670 INFO L87 Difference]: Start difference. First operand 29437 states and 42762 transitions. Second operand 7 states. [2020-10-12 11:21:49,901 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:21:50,158 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:54,185 INFO L93 Difference]: Finished difference Result 105405 states and 158676 transitions. [2020-10-12 11:21:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:21:54,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-12 11:21:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:54,437 INFO L225 Difference]: With dead ends: 105405 [2020-10-12 11:21:54,437 INFO L226 Difference]: Without dead ends: 75676 [2020-10-12 11:21:54,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:21:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75676 states. [2020-10-12 11:21:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75676 to 75323. [2020-10-12 11:21:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75323 states. [2020-10-12 11:21:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75323 states to 75323 states and 105970 transitions. [2020-10-12 11:21:55,975 INFO L78 Accepts]: Start accepts. Automaton has 75323 states and 105970 transitions. Word has length 374 [2020-10-12 11:21:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:55,976 INFO L479 AbstractCegarLoop]: Abstraction has 75323 states and 105970 transitions. [2020-10-12 11:21:55,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 75323 states and 105970 transitions. [2020-10-12 11:21:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-12 11:21:56,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:56,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:21:56,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:21:56,146 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:56,147 INFO L82 PathProgramCache]: Analyzing trace with hash -233282642, now seen corresponding path program 1 times [2020-10-12 11:21:56,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:56,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798669189] [2020-10-12 11:21:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:01,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:01,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-12 11:22:01,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:22:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 11:22:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:22:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:22:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 11:22:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:01,398 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:01,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:22:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:01,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:22:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:01,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:22:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:22:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:22:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:01,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 11:22:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 169 proven. 65 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:22:02,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798669189] [2020-10-12 11:22:02,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:02,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:22:02,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876929669] [2020-10-12 11:22:02,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:22:02,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:22:02,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:22:02,047 INFO L87 Difference]: Start difference. First operand 75323 states and 105970 transitions. Second operand 7 states. [2020-10-12 11:22:02,182 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:22:03,175 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:22:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:05,256 INFO L93 Difference]: Finished difference Result 164130 states and 233892 transitions. [2020-10-12 11:22:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:22:05,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2020-10-12 11:22:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:05,532 INFO L225 Difference]: With dead ends: 164130 [2020-10-12 11:22:05,532 INFO L226 Difference]: Without dead ends: 93154 [2020-10-12 11:22:05,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:22:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93154 states. [2020-10-12 11:22:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93154 to 92871. [2020-10-12 11:22:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92871 states. [2020-10-12 11:22:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92871 states to 92871 states and 127144 transitions. [2020-10-12 11:22:10,281 INFO L78 Accepts]: Start accepts. Automaton has 92871 states and 127144 transitions. Word has length 384 [2020-10-12 11:22:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:10,282 INFO L479 AbstractCegarLoop]: Abstraction has 92871 states and 127144 transitions. [2020-10-12 11:22:10,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:22:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 92871 states and 127144 transitions. [2020-10-12 11:22:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-12 11:22:10,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:10,443 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:22:10,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:22:10,444 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:10,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1002774572, now seen corresponding path program 1 times [2020-10-12 11:22:10,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:10,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197553856] [2020-10-12 11:22:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:14,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-12 11:22:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:22:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 11:22:15,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:22:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:22:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 11:22:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:15,792 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:15,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:15,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:22:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:16,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:16,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:22:16,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:22:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 11:22:16,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:22:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:22:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:16,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:16,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:22:16,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 11:22:16,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 11:22:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-12 11:22:16,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197553856] [2020-10-12 11:22:16,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:16,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:22:16,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126361118] [2020-10-12 11:22:16,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:22:16,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:16,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:22:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:22:16,469 INFO L87 Difference]: Start difference. First operand 92871 states and 127144 transitions. Second operand 8 states. [2020-10-12 11:22:16,594 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:17,547 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:22:17,738 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:21,233 INFO L93 Difference]: Finished difference Result 257825 states and 364089 transitions. [2020-10-12 11:22:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:22:21,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 397 [2020-10-12 11:22:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:21,618 INFO L225 Difference]: With dead ends: 257825 [2020-10-12 11:22:21,619 INFO L226 Difference]: Without dead ends: 165220 [2020-10-12 11:22:21,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:22:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165220 states. [2020-10-12 11:22:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165220 to 164625. [2020-10-12 11:22:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164625 states. [2020-10-12 11:22:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164625 states to 164625 states and 223874 transitions. [2020-10-12 11:22:24,231 INFO L78 Accepts]: Start accepts. Automaton has 164625 states and 223874 transitions. Word has length 397 [2020-10-12 11:22:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:24,232 INFO L479 AbstractCegarLoop]: Abstraction has 164625 states and 223874 transitions. [2020-10-12 11:22:24,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:22:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 164625 states and 223874 transitions. [2020-10-12 11:22:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-12 11:22:27,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:27,798 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:22:27,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:22:27,798 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1062930772, now seen corresponding path program 1 times [2020-10-12 11:22:27,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:27,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817636468] [2020-10-12 11:22:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-12 11:22:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 11:22:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:30,133 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:30,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:30,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:22:30,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:22:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:22:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:30,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:30,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 11:22:30,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:22:30,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:30,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:30,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:30,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:22:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 11:22:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 11:22:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 11:22:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 11:22:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 11:22:30,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817636468] [2020-10-12 11:22:30,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:30,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:22:30,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614799183] [2020-10-12 11:22:30,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:22:30,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:30,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:22:30,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:22:30,673 INFO L87 Difference]: Start difference. First operand 164625 states and 223874 transitions. Second operand 7 states. [2020-10-12 11:22:31,524 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:22:31,668 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:22:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:35,395 INFO L93 Difference]: Finished difference Result 290335 states and 421343 transitions. [2020-10-12 11:22:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:22:35,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-12 11:22:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:36,086 INFO L225 Difference]: With dead ends: 290335 [2020-10-12 11:22:36,086 INFO L226 Difference]: Without dead ends: 177112 [2020-10-12 11:22:36,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:22:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177112 states. [2020-10-12 11:22:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177112 to 173985. [2020-10-12 11:22:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173985 states. [2020-10-12 11:22:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173985 states to 173985 states and 236845 transitions. [2020-10-12 11:22:40,241 INFO L78 Accepts]: Start accepts. Automaton has 173985 states and 236845 transitions. Word has length 405 [2020-10-12 11:22:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:40,242 INFO L479 AbstractCegarLoop]: Abstraction has 173985 states and 236845 transitions. [2020-10-12 11:22:40,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:22:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 173985 states and 236845 transitions. [2020-10-12 11:22:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-12 11:22:40,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:40,412 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:22:40,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:22:40,413 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash 371858768, now seen corresponding path program 1 times [2020-10-12 11:22:40,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:40,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072019015] [2020-10-12 11:22:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:45,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-12 11:22:45,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:22:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 11:22:45,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 11:22:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 11:22:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-12 11:22:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:46,001 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:46,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:46,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:22:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:46,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:22:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 11:22:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:22:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:22:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:46,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:22:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 11:22:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:22:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-12 11:22:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:47,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:47,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 11:22:47,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 11:22:47,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:22:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 11:22:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 187 proven. 129 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:22:47,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072019015] [2020-10-12 11:22:47,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:47,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:22:47,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505132865] [2020-10-12 11:22:47,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:22:47,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:22:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:22:47,899 INFO L87 Difference]: Start difference. First operand 173985 states and 236845 transitions. Second operand 9 states. [2020-10-12 11:22:48,632 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:22:50,313 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 11:22:51,387 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 11:22:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:54,900 INFO L93 Difference]: Finished difference Result 390689 states and 537653 transitions. [2020-10-12 11:22:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 11:22:54,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 408 [2020-10-12 11:22:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:55,471 INFO L225 Difference]: With dead ends: 390689 [2020-10-12 11:22:55,471 INFO L226 Difference]: Without dead ends: 216444 [2020-10-12 11:22:55,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:22:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216444 states. [2020-10-12 11:23:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216444 to 214710. [2020-10-12 11:23:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214710 states. [2020-10-12 11:23:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214710 states to 214710 states and 286913 transitions. [2020-10-12 11:23:05,322 INFO L78 Accepts]: Start accepts. Automaton has 214710 states and 286913 transitions. Word has length 408 [2020-10-12 11:23:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:23:05,323 INFO L479 AbstractCegarLoop]: Abstraction has 214710 states and 286913 transitions. [2020-10-12 11:23:05,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:23:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 214710 states and 286913 transitions. [2020-10-12 11:23:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-12 11:23:05,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:23:05,511 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:23:05,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 11:23:05,511 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:23:05,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:23:05,512 INFO L82 PathProgramCache]: Analyzing trace with hash 310628211, now seen corresponding path program 1 times [2020-10-12 11:23:05,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:23:05,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089883047] [2020-10-12 11:23:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:23:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:08,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-12 11:23:10,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:23:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 11:23:10,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:23:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 11:23:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 11:23:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:10,849 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:23:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:23:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:10,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:23:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:23:10,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:23:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:23:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:23:11,328 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:23:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:23:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:11,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:23:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 11:23:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:23:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:23:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1