/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:31:45,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:31:45,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:31:45,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:31:45,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:31:45,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:31:45,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:31:45,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:31:45,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:31:45,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:31:45,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:31:45,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:31:45,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:31:45,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:31:45,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:31:45,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:31:45,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:31:45,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:31:45,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:31:45,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:31:45,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:31:45,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:31:45,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:31:45,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:31:45,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:31:45,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:31:45,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:31:45,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:31:45,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:31:45,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:31:45,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:31:45,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:31:45,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:31:45,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:31:45,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:31:45,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:31:45,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:31:45,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:31:45,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:31:45,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:31:45,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:31:45,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:31:45,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:31:45,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:31:45,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:31:45,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:31:45,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:31:45,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:31:45,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:31:45,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:31:45,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:31:45,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:31:45,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:31:45,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:31:45,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:31:45,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:31:45,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:31:45,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:31:45,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:31:45,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:31:45,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:31:45,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:31:45,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:31:45,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:31:45,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:31:45,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:31:45,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:31:45,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:31:45,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:31:45,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:31:45,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:31:45,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:31:45,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:31:46,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:31:46,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:31:46,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:31:46,034 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:31:46,035 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2020-10-13 08:31:46,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61706d32/f13989fbd9d148c8b00c5eedb82167d2/FLAGb25577e46 [2020-10-13 08:31:47,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:31:47,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2020-10-13 08:31:47,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61706d32/f13989fbd9d148c8b00c5eedb82167d2/FLAGb25577e46 [2020-10-13 08:31:47,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61706d32/f13989fbd9d148c8b00c5eedb82167d2 [2020-10-13 08:31:47,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:31:47,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:31:47,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:31:47,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:31:47,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:31:47,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:47" (1/1) ... [2020-10-13 08:31:47,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ea52f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:47, skipping insertion in model container [2020-10-13 08:31:47,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:47" (1/1) ... [2020-10-13 08:31:47,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:31:47,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:31:49,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:31:49,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:31:50,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:31:51,018 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:31:51,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51 WrapperNode [2020-10-13 08:31:51,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:31:51,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:31:51,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:31:51,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:31:51,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... [2020-10-13 08:31:51,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:31:51,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:31:51,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:31:51,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:31:51,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:31:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:31:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:31:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:31:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:31:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:31:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:31:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:31:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:31:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:31:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:31:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:31:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:31:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:31:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:31:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:31:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:31:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:32:05,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:32:05,664 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:32:05,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:05 BoogieIcfgContainer [2020-10-13 08:32:05,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:32:05,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:32:05,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:32:05,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:32:05,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:31:47" (1/3) ... [2020-10-13 08:32:05,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b18eb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:05, skipping insertion in model container [2020-10-13 08:32:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:51" (2/3) ... [2020-10-13 08:32:05,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b18eb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:05, skipping insertion in model container [2020-10-13 08:32:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:05" (3/3) ... [2020-10-13 08:32:05,690 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label12.c [2020-10-13 08:32:05,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:32:05,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:32:05,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:32:05,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:32:05,778 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:32:05,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:32:05,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:32:05,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:32:05,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:32:05,780 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:32:05,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:32:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:32:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 08:32:05,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:05,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:05,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:05,842 INFO L82 PathProgramCache]: Analyzing trace with hash 461583928, now seen corresponding path program 1 times [2020-10-13 08:32:05,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:05,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821682920] [2020-10-13 08:32:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:06,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:06,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 08:32:06,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 08:32:06,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:32:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:32:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:32:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:32:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:06,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:06,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:06,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 08:32:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:06,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821682920] [2020-10-13 08:32:06,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:32:06,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:32:06,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400969886] [2020-10-13 08:32:06,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:32:06,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:32:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:32:06,511 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:32:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:22,968 INFO L93 Difference]: Finished difference Result 3118 states and 5748 transitions. [2020-10-13 08:32:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:22,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 08:32:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:23,034 INFO L225 Difference]: With dead ends: 3118 [2020-10-13 08:32:23,034 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 08:32:23,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 08:32:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1917. [2020-10-13 08:32:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-13 08:32:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2935 transitions. [2020-10-13 08:32:23,304 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2935 transitions. Word has length 15 [2020-10-13 08:32:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:23,306 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2935 transitions. [2020-10-13 08:32:23,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:32:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2935 transitions. [2020-10-13 08:32:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 08:32:23,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:23,317 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] [2020-10-13 08:32:23,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:32:23,318 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2118425549, now seen corresponding path program 1 times [2020-10-13 08:32:23,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:23,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906869322] [2020-10-13 08:32:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:25,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:32:25,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:32:25,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1880 [2020-10-13 08:32:25,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:32:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:32:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:25,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:25,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:25,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:32:25,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:32:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 08:32:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:32:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:25,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906869322] [2020-10-13 08:32:25,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:25,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:25,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437990293] [2020-10-13 08:32:25,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:25,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:25,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:25,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:25,699 INFO L87 Difference]: Start difference. First operand 1917 states and 2935 transitions. Second operand 5 states. [2020-10-13 08:32:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:45,477 INFO L93 Difference]: Finished difference Result 4684 states and 7484 transitions. [2020-10-13 08:32:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:45,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 08:32:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:45,496 INFO L225 Difference]: With dead ends: 4684 [2020-10-13 08:32:45,496 INFO L226 Difference]: Without dead ends: 2773 [2020-10-13 08:32:45,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2020-10-13 08:32:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2765. [2020-10-13 08:32:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2765 states. [2020-10-13 08:32:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3979 transitions. [2020-10-13 08:32:45,582 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3979 transitions. Word has length 91 [2020-10-13 08:32:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:45,582 INFO L479 AbstractCegarLoop]: Abstraction has 2765 states and 3979 transitions. [2020-10-13 08:32:45,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3979 transitions. [2020-10-13 08:32:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:32:45,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:45,586 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] [2020-10-13 08:32:45,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:32:45,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1681807286, now seen corresponding path program 1 times [2020-10-13 08:32:45,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:45,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519379790] [2020-10-13 08:32:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:46,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:46,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:32:46,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:32:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-13 08:32:46,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:32:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:32:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:46,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:46,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:46,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:32:46,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:46,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:46,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:46,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:32:46,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:32:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:32:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:46,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519379790] [2020-10-13 08:32:46,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:46,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:46,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586695846] [2020-10-13 08:32:46,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:46,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:46,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:46,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:46,998 INFO L87 Difference]: Start difference. First operand 2765 states and 3979 transitions. Second operand 5 states. [2020-10-13 08:33:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:07,300 INFO L93 Difference]: Finished difference Result 7987 states and 11645 transitions. [2020-10-13 08:33:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:07,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:33:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:07,342 INFO L225 Difference]: With dead ends: 7987 [2020-10-13 08:33:07,342 INFO L226 Difference]: Without dead ends: 5228 [2020-10-13 08:33:07,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2020-10-13 08:33:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5223. [2020-10-13 08:33:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5223 states. [2020-10-13 08:33:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 7242 transitions. [2020-10-13 08:33:07,519 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 7242 transitions. Word has length 105 [2020-10-13 08:33:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:07,521 INFO L479 AbstractCegarLoop]: Abstraction has 5223 states and 7242 transitions. [2020-10-13 08:33:07,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 7242 transitions. [2020-10-13 08:33:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 08:33:07,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:07,531 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] [2020-10-13 08:33:07,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:33:07,532 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:07,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:07,533 INFO L82 PathProgramCache]: Analyzing trace with hash 432072225, now seen corresponding path program 1 times [2020-10-13 08:33:07,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:07,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494642439] [2020-10-13 08:33:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:08,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:08,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:33:08,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:08,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-13 08:33:08,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-13 08:33:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:33:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:09,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:09,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:09,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:33:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:33:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:33:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:33:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:09,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494642439] [2020-10-13 08:33:09,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:09,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:09,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697025939] [2020-10-13 08:33:09,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:09,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:09,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:09,291 INFO L87 Difference]: Start difference. First operand 5223 states and 7242 transitions. Second operand 5 states. [2020-10-13 08:33:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:28,601 INFO L93 Difference]: Finished difference Result 15345 states and 21684 transitions. [2020-10-13 08:33:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:28,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 08:33:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:28,658 INFO L225 Difference]: With dead ends: 15345 [2020-10-13 08:33:28,658 INFO L226 Difference]: Without dead ends: 10128 [2020-10-13 08:33:28,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10128 states. [2020-10-13 08:33:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10128 to 10123. [2020-10-13 08:33:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10123 states. [2020-10-13 08:33:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10123 states to 10123 states and 13773 transitions. [2020-10-13 08:33:28,975 INFO L78 Accepts]: Start accepts. Automaton has 10123 states and 13773 transitions. Word has length 108 [2020-10-13 08:33:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:28,977 INFO L479 AbstractCegarLoop]: Abstraction has 10123 states and 13773 transitions. [2020-10-13 08:33:28,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 10123 states and 13773 transitions. [2020-10-13 08:33:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 08:33:28,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:28,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:28,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:33:28,983 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:28,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1620522189, now seen corresponding path program 1 times [2020-10-13 08:33:28,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:28,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425513988] [2020-10-13 08:33:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:29,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:31,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:33:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2826 [2020-10-13 08:33:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 08:33:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:33:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:31,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:31,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:31,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:33:31,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:32,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:32,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:32,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:32,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:33:32,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:33:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:33:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:33:32,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:33:32,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:33:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 08:33:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 08:33:32,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425513988] [2020-10-13 08:33:32,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:32,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:33:32,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491102625] [2020-10-13 08:33:32,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:33:32,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:32,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:33:32,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:32,340 INFO L87 Difference]: Start difference. First operand 10123 states and 13773 transitions. Second operand 6 states. [2020-10-13 08:33:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:56,154 INFO L93 Difference]: Finished difference Result 23517 states and 33486 transitions. [2020-10-13 08:33:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:33:56,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-10-13 08:33:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:56,215 INFO L225 Difference]: With dead ends: 23517 [2020-10-13 08:33:56,215 INFO L226 Difference]: Without dead ends: 13400 [2020-10-13 08:33:56,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:33:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13400 states. [2020-10-13 08:33:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13400 to 13383. [2020-10-13 08:33:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13383 states. [2020-10-13 08:33:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 18755 transitions. [2020-10-13 08:33:56,540 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 18755 transitions. Word has length 174 [2020-10-13 08:33:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:56,541 INFO L479 AbstractCegarLoop]: Abstraction has 13383 states and 18755 transitions. [2020-10-13 08:33:56,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:33:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 18755 transitions. [2020-10-13 08:33:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 08:33:56,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:56,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:56,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:33:56,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:56,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1188662650, now seen corresponding path program 1 times [2020-10-13 08:33:56,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:56,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530726758] [2020-10-13 08:33:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:33:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2762 [2020-10-13 08:33:59,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:33:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:33:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:33:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:59,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:33:59,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:33:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:33:59,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:33:59,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:33:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:33:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:33:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:33:59,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:33:59,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-13 08:33:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:59,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 16 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:34:00,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530726758] [2020-10-13 08:34:00,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:00,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:34:00,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273081152] [2020-10-13 08:34:00,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:34:00,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:00,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:34:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:34:00,102 INFO L87 Difference]: Start difference. First operand 13383 states and 18755 transitions. Second operand 7 states. [2020-10-13 08:34:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:22,210 INFO L93 Difference]: Finished difference Result 40381 states and 59586 transitions. [2020-10-13 08:34:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:34:22,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-13 08:34:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:22,342 INFO L225 Difference]: With dead ends: 40381 [2020-10-13 08:34:22,342 INFO L226 Difference]: Without dead ends: 27004 [2020-10-13 08:34:22,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:34:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27004 states. [2020-10-13 08:34:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27004 to 26970. [2020-10-13 08:34:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26970 states. [2020-10-13 08:34:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26970 states to 26970 states and 37840 transitions. [2020-10-13 08:34:23,310 INFO L78 Accepts]: Start accepts. Automaton has 26970 states and 37840 transitions. Word has length 257 [2020-10-13 08:34:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:23,311 INFO L479 AbstractCegarLoop]: Abstraction has 26970 states and 37840 transitions. [2020-10-13 08:34:23,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:34:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 26970 states and 37840 transitions. [2020-10-13 08:34:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-13 08:34:23,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:23,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:34:23,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:34:23,323 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash 881631195, now seen corresponding path program 1 times [2020-10-13 08:34:23,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:23,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199626421] [2020-10-13 08:34:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-13 08:34:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:34:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4594 [2020-10-13 08:34:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 267 [2020-10-13 08:34:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:34:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:28,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:34:28,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:28,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:28,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:34:28,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:34:28,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:34:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 08:34:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 08:34:28,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:34:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:34:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:34:28,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199626421] [2020-10-13 08:34:28,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:34:28,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:34:28,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238027254] [2020-10-13 08:34:28,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:28,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:28,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:28,716 INFO L87 Difference]: Start difference. First operand 26970 states and 37840 transitions. Second operand 5 states. [2020-10-13 08:34:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:46,290 INFO L93 Difference]: Finished difference Result 53925 states and 75884 transitions. [2020-10-13 08:34:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:46,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-13 08:34:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:46,406 INFO L225 Difference]: With dead ends: 53925 [2020-10-13 08:34:46,406 INFO L226 Difference]: Without dead ends: 26961 [2020-10-13 08:34:46,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26961 states. [2020-10-13 08:34:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26961 to 26956. [2020-10-13 08:34:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26956 states. [2020-10-13 08:34:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26956 states to 26956 states and 37816 transitions. [2020-10-13 08:34:47,312 INFO L78 Accepts]: Start accepts. Automaton has 26956 states and 37816 transitions. Word has length 272 [2020-10-13 08:34:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:47,314 INFO L479 AbstractCegarLoop]: Abstraction has 26956 states and 37816 transitions. [2020-10-13 08:34:47,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 26956 states and 37816 transitions. [2020-10-13 08:34:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-13 08:34:47,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:47,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:34:47,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:34:47,335 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:47,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1210031800, now seen corresponding path program 1 times [2020-10-13 08:34:47,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:47,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957336212] [2020-10-13 08:34:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:52,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:52,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-13 08:34:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:34:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 08:34:52,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:34:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 08:34:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:34:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:34:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:34:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:34:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:34:52,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:34:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:52,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:34:52,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:34:52,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:34:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 08:34:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:53,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:53,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:34:53,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:34:53,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-13 08:34:53,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:34:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 08:34:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 08:34:54,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957336212] [2020-10-13 08:34:54,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:54,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:34:54,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838690231] [2020-10-13 08:34:54,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:34:54,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:54,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:34:54,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:34:54,116 INFO L87 Difference]: Start difference. First operand 26956 states and 37816 transitions. Second operand 7 states.