/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/Problem12_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:32:30,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:32:30,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:32:30,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:32:30,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:32:30,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:32:30,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:32:30,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:32:30,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:32:30,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:32:30,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:32:30,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:32:30,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:32:30,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:32:30,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:32:30,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:32:30,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:32:30,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:32:30,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:32:30,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:32:30,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:32:30,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:32:30,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:32:30,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:32:30,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:32:30,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:32:30,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:32:30,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:32:30,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:32:30,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:32:30,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:32:30,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:32:30,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:32:30,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:32:30,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:32:30,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:32:30,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:32:30,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:32:30,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:32:30,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:32:30,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:32:30,542 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 13:32:30,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:32:30,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:32:30,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:32:30,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:32:30,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:32:30,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:32:30,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:32:30,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:32:30,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:32:30,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:32:30,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:32:30,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:32:30,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:32:30,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:32:30,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:32:30,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:32:30,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:32:30,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:32:30,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:32:30,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:32:30,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:32:30,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:32:30,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:32:30,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:32:30,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:32:30,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:32:30,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:32:30,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:32:30,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:32:30,578 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 13:32:30,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:32:30,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:32:30,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:32:30,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:32:30,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:32:30,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-12 13:32:31,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1aa397ad/7662d8dbf0e449feb75636637165545b/FLAG8a299e294 [2020-10-12 13:32:31,976 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:32:31,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-12 13:32:32,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1aa397ad/7662d8dbf0e449feb75636637165545b/FLAG8a299e294 [2020-10-12 13:32:32,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1aa397ad/7662d8dbf0e449feb75636637165545b [2020-10-12 13:32:32,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:32:32,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:32:32,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:32:32,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:32:32,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:32:32,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:32:32" (1/1) ... [2020-10-12 13:32:32,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:32, skipping insertion in model container [2020-10-12 13:32:32,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:32:32" (1/1) ... [2020-10-12 13:32:32,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:32:32,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:32:34,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:32:34,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:32:35,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:32:35,130 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:32:35,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35 WrapperNode [2020-10-12 13:32:35,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:32:35,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:32:35,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:32:35,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:32:35,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (1/1) ... [2020-10-12 13:32:35,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:32:35,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:32:35,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:32:35,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:32:35,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (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 13:32:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:32:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:32:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:32:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:32:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:32:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:32:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:32:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:32:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:32:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:32:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:32:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:32:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:32:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:32:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:32:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:32:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:32:41,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:32:41,033 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:32:41,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:32:41 BoogieIcfgContainer [2020-10-12 13:32:41,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:32:41,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:32:41,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:32:41,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:32:41,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:32:32" (1/3) ... [2020-10-12 13:32:41,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7639983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:32:41, skipping insertion in model container [2020-10-12 13:32:41,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:32:35" (2/3) ... [2020-10-12 13:32:41,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7639983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:32:41, skipping insertion in model container [2020-10-12 13:32:41,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:32:41" (3/3) ... [2020-10-12 13:32:41,071 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label57.c [2020-10-12 13:32:41,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:32:41,097 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:32:41,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:32:41,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:32:41,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:32:41,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:32:41,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:32:41,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:32:41,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:32:41,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:32:41,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:32:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:32:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 13:32:41,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:32:41,203 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] [2020-10-12 13:32:41,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:32:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:32:41,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1218214590, now seen corresponding path program 1 times [2020-10-12 13:32:41,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:32:41,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781239459] [2020-10-12 13:32:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:32:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:41,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:41,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 13:32:41,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-12 13:32:41,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:32:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:32:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 13:32:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:32:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:32:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:42,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:42,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:42,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:32:42,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:42,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:32:42,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:32:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:42,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:32:42,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:32:42,197 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 13:32:42,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781239459] [2020-10-12 13:32:42,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:32:42,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:32:42,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446363302] [2020-10-12 13:32:42,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:32:42,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:32:42,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:32:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:32:42,232 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-12 13:32:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:56,739 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-12 13:32:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:32:56,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-12 13:32:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:56,777 INFO L225 Difference]: With dead ends: 3253 [2020-10-12 13:32:56,778 INFO L226 Difference]: Without dead ends: 2346 [2020-10-12 13:32:56,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:32:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-12 13:32:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-12 13:32:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-12 13:32:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-12 13:32:56,994 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 43 [2020-10-12 13:32:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:32:56,995 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-12 13:32:56,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:32:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-12 13:32:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 13:32:57,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:32:57,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:57,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:32:57,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:32:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:32:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1867365818, now seen corresponding path program 1 times [2020-10-12 13:32:57,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:32:57,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864744733] [2020-10-12 13:32:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:32:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:58,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:58,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 13:32:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:32:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-12 13:32:58,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:32:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:32:58,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:32:58,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:32:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:32:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:58,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:32:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:32:58,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:32:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:32:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:32:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:32:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:58,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:58,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:32:58,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:32:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-12 13:32:58,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:32:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:32:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:32:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:32:58,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864744733] [2020-10-12 13:32:58,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:32:58,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:32:58,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251257949] [2020-10-12 13:32:58,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:32:58,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:32:58,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:32:58,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:32:58,921 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 6 states. [2020-10-12 13:33:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:33:09,801 INFO L93 Difference]: Finished difference Result 7074 states and 11797 transitions. [2020-10-12 13:33:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:33:09,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-12 13:33:09,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:33:09,834 INFO L225 Difference]: With dead ends: 7074 [2020-10-12 13:33:09,835 INFO L226 Difference]: Without dead ends: 4749 [2020-10-12 13:33:09,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:33:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2020-10-12 13:33:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 4719. [2020-10-12 13:33:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4719 states. [2020-10-12 13:33:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 6846 transitions. [2020-10-12 13:33:10,009 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 6846 transitions. Word has length 121 [2020-10-12 13:33:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:33:10,010 INFO L479 AbstractCegarLoop]: Abstraction has 4719 states and 6846 transitions. [2020-10-12 13:33:10,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:33:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 6846 transitions. [2020-10-12 13:33:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-12 13:33:10,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:33:10,017 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:33:10,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:33:10,018 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:33:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:33:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash 608178230, now seen corresponding path program 1 times [2020-10-12 13:33:10,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:33:10,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899771232] [2020-10-12 13:33:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:33:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:14,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:14,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-12 13:33:14,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:33:14,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4769 [2020-10-12 13:33:14,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:33:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:33:14,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:33:14,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:33:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:14,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:14,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:33:14,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:33:14,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:33:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:33:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:33:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:33:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:15,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:15,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:33:15,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:33:15,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 13:33:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:33:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:33:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 13:33:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:15,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:15,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:33:15,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 13:33:15,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:33:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:33:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:33:15,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899771232] [2020-10-12 13:33:15,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:33:15,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:33:15,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765808038] [2020-10-12 13:33:15,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:33:15,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:33:15,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:33:15,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:33:15,566 INFO L87 Difference]: Start difference. First operand 4719 states and 6846 transitions. Second operand 9 states. [2020-10-12 13:33:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:33:32,097 INFO L93 Difference]: Finished difference Result 14904 states and 24116 transitions. [2020-10-12 13:33:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 13:33:32,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-12 13:33:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:33:32,207 INFO L225 Difference]: With dead ends: 14904 [2020-10-12 13:33:32,207 INFO L226 Difference]: Without dead ends: 10191 [2020-10-12 13:33:32,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-12 13:33:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10191 states. [2020-10-12 13:33:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 9756. [2020-10-12 13:33:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9756 states. [2020-10-12 13:33:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9756 states to 9756 states and 13019 transitions. [2020-10-12 13:33:32,730 INFO L78 Accepts]: Start accepts. Automaton has 9756 states and 13019 transitions. Word has length 195 [2020-10-12 13:33:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:33:32,737 INFO L479 AbstractCegarLoop]: Abstraction has 9756 states and 13019 transitions. [2020-10-12 13:33:32,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:33:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9756 states and 13019 transitions. [2020-10-12 13:33:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 13:33:32,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:33:32,746 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:33:32,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:33:32,746 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:33:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:33:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1375118935, now seen corresponding path program 1 times [2020-10-12 13:33:32,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:33:32,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199292691] [2020-10-12 13:33:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:33:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:32,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:35,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:35,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 13:33:35,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:33:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2635 [2020-10-12 13:33:35,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:33:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:33:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 13:33:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:33:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:35,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:35,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:33:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:33:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:33:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:33:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:33:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:33:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:33:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:35,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:35,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:33:35,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:35,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:33:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:33:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:33:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:35,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:33:35,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:33:35,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:33:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 13:33:35,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199292691] [2020-10-12 13:33:35,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:33:35,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:33:35,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850136278] [2020-10-12 13:33:35,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:33:35,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:33:35,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:33:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:33:35,945 INFO L87 Difference]: Start difference. First operand 9756 states and 13019 transitions. Second operand 7 states. [2020-10-12 13:33:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:33:49,771 INFO L93 Difference]: Finished difference Result 28767 states and 39584 transitions. [2020-10-12 13:33:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:33:49,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-12 13:33:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:33:49,860 INFO L225 Difference]: With dead ends: 28767 [2020-10-12 13:33:49,860 INFO L226 Difference]: Without dead ends: 19017 [2020-10-12 13:33:49,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:33:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19017 states. [2020-10-12 13:33:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19017 to 17197. [2020-10-12 13:33:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17197 states. [2020-10-12 13:33:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17197 states to 17197 states and 22393 transitions. [2020-10-12 13:33:50,409 INFO L78 Accepts]: Start accepts. Automaton has 17197 states and 22393 transitions. Word has length 198 [2020-10-12 13:33:50,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:33:50,411 INFO L479 AbstractCegarLoop]: Abstraction has 17197 states and 22393 transitions. [2020-10-12 13:33:50,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:33:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 17197 states and 22393 transitions. [2020-10-12 13:33:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 13:33:50,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:33:50,417 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:33:50,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:33:50,418 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:33:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:33:50,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1261408785, now seen corresponding path program 1 times [2020-10-12 13:33:50,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:33:50,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202764904] [2020-10-12 13:33:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:33:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:51,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 13:33:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:33:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-12 13:33:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-12 13:33:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 13:33:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:33:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:51,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:51,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:33:51,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:33:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:33:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:33:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:33:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:33:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:33:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:51,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:51,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:33:51,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:33:51,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:33:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:33:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:33:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:33:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:52,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:52,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:33:52,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:52,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:33:52,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:33:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:33:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:33:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 13:33:52,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202764904] [2020-10-12 13:33:52,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:33:52,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:33:52,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673591415] [2020-10-12 13:33:52,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:33:52,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:33:52,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:33:52,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:33:52,160 INFO L87 Difference]: Start difference. First operand 17197 states and 22393 transitions. Second operand 5 states. [2020-10-12 13:34:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:34:05,896 INFO L93 Difference]: Finished difference Result 49449 states and 66973 transitions. [2020-10-12 13:34:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:34:05,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-12 13:34:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:34:06,043 INFO L225 Difference]: With dead ends: 49449 [2020-10-12 13:34:06,044 INFO L226 Difference]: Without dead ends: 32258 [2020-10-12 13:34:06,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:34:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32258 states. [2020-10-12 13:34:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32258 to 31448. [2020-10-12 13:34:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31448 states. [2020-10-12 13:34:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31448 states to 31448 states and 41622 transitions. [2020-10-12 13:34:08,559 INFO L78 Accepts]: Start accepts. Automaton has 31448 states and 41622 transitions. Word has length 242 [2020-10-12 13:34:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:34:08,560 INFO L479 AbstractCegarLoop]: Abstraction has 31448 states and 41622 transitions. [2020-10-12 13:34:08,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:34:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 31448 states and 41622 transitions. [2020-10-12 13:34:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 13:34:08,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:34:08,567 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:34:08,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:34:08,568 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:34:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:34:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash -930865293, now seen corresponding path program 1 times [2020-10-12 13:34:08,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:34:08,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701527261] [2020-10-12 13:34:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:34:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:08,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:11,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:11,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 13:34:11,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:34:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2471 [2020-10-12 13:34:11,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:34:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:34:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:34:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:34:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:11,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:34:11,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:34:11,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:34:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:34:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:34:11,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:34:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:34:11,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-12 13:34:11,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:34:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:34:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:34:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:34:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:34:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:34:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:34:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:34:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:34:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 72 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:34:12,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701527261] [2020-10-12 13:34:12,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:34:12,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:34:12,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160358408] [2020-10-12 13:34:12,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:34:12,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:34:12,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:34:12,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:34:12,257 INFO L87 Difference]: Start difference. First operand 31448 states and 41622 transitions. Second operand 7 states. [2020-10-12 13:34:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:34:27,551 INFO L93 Difference]: Finished difference Result 71105 states and 94366 transitions. [2020-10-12 13:34:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:34:27,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-12 13:34:27,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:34:27,714 INFO L225 Difference]: With dead ends: 71105 [2020-10-12 13:34:27,714 INFO L226 Difference]: Without dead ends: 39663 [2020-10-12 13:34:27,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:34:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39663 states. [2020-10-12 13:34:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39663 to 38665. [2020-10-12 13:34:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38665 states. [2020-10-12 13:34:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38665 states to 38665 states and 49816 transitions. [2020-10-12 13:34:30,134 INFO L78 Accepts]: Start accepts. Automaton has 38665 states and 49816 transitions. Word has length 264 [2020-10-12 13:34:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:34:30,134 INFO L479 AbstractCegarLoop]: Abstraction has 38665 states and 49816 transitions. [2020-10-12 13:34:30,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:34:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 38665 states and 49816 transitions. [2020-10-12 13:34:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-12 13:34:30,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:34:30,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:30,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:34:30,143 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:34:30,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:34:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1033849251, now seen corresponding path program 1 times [2020-10-12 13:34:30,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:34:30,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439377247] [2020-10-12 13:34:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:34:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:30,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:34,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:34,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-12 13:34:34,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:34:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4605 [2020-10-12 13:34:34,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:34:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:34:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:34:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:34,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:34:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:34,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:34:34,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:34:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:34:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:34:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:34:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:34:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:34:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:34:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:34:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:34:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:34:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:34:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:34:35,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:34:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 13:34:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:34:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:34:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:34:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-12 13:34:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:35,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:34:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 13:34:35,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:34:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:34:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:34:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 250 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:34:35,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439377247] [2020-10-12 13:34:35,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:34:35,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:34:35,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68159527] [2020-10-12 13:34:35,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:34:35,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:34:35,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:34:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:34:35,811 INFO L87 Difference]: Start difference. First operand 38665 states and 49816 transitions. Second operand 7 states. [2020-10-12 13:34:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:34:55,168 INFO L93 Difference]: Finished difference Result 93821 states and 127511 transitions. [2020-10-12 13:34:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:34:55,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-12 13:34:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:34:55,342 INFO L225 Difference]: With dead ends: 93821 [2020-10-12 13:34:55,342 INFO L226 Difference]: Without dead ends: 55162 [2020-10-12 13:34:55,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:34:55,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55162 states. [2020-10-12 13:34:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55162 to 54126. [2020-10-12 13:34:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54126 states. [2020-10-12 13:34:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54126 states to 54126 states and 72617 transitions. [2020-10-12 13:34:56,641 INFO L78 Accepts]: Start accepts. Automaton has 54126 states and 72617 transitions. Word has length 336 [2020-10-12 13:34:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:34:56,642 INFO L479 AbstractCegarLoop]: Abstraction has 54126 states and 72617 transitions. [2020-10-12 13:34:56,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:34:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 54126 states and 72617 transitions. [2020-10-12 13:34:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-12 13:34:56,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:34:56,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:56,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:34:56,655 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:34:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:34:56,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1031967087, now seen corresponding path program 1 times [2020-10-12 13:34:56,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:34:56,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019987810] [2020-10-12 13:34:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:34:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:00,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:00,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-12 13:35:00,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:35:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3898 [2020-10-12 13:35:00,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-12 13:35:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 13:35:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:00,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:00,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:00,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:00,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:35:00,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:00,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:35:00,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:35:00,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:35:00,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:35:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:00,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:00,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:35:00,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:35:00,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:35:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:01,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:35:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:35:01,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:35:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:35:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-12 13:35:01,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019987810] [2020-10-12 13:35:01,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:35:01,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:35:01,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654126570] [2020-10-12 13:35:01,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:35:01,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:01,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:35:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:35:01,129 INFO L87 Difference]: Start difference. First operand 54126 states and 72617 transitions. Second operand 5 states. [2020-10-12 13:35:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:16,876 INFO L93 Difference]: Finished difference Result 121219 states and 166679 transitions. [2020-10-12 13:35:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:35:16,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2020-10-12 13:35:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:17,154 INFO L225 Difference]: With dead ends: 121219 [2020-10-12 13:35:17,155 INFO L226 Difference]: Without dead ends: 85423 [2020-10-12 13:35:17,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:35:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85423 states. [2020-10-12 13:35:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85423 to 85397. [2020-10-12 13:35:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85397 states. [2020-10-12 13:35:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85397 states to 85397 states and 111316 transitions. [2020-10-12 13:35:19,167 INFO L78 Accepts]: Start accepts. Automaton has 85397 states and 111316 transitions. Word has length 354 [2020-10-12 13:35:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:19,168 INFO L479 AbstractCegarLoop]: Abstraction has 85397 states and 111316 transitions. [2020-10-12 13:35:19,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:35:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 85397 states and 111316 transitions. [2020-10-12 13:35:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-12 13:35:19,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:19,184 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:35:19,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:35:19,185 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:19,185 INFO L82 PathProgramCache]: Analyzing trace with hash 506059266, now seen corresponding path program 1 times [2020-10-12 13:35:19,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:19,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023967333] [2020-10-12 13:35:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:24,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:24,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-12 13:35:24,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:35:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4937 [2020-10-12 13:35:24,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:35:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-12 13:35:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 13:35:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:24,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:24,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:35:24,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:24,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:24,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:35:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:35:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 13:35:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:35:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:35:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:24,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:24,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:35:24,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:35:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 13:35:24,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:35:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 283 proven. 37 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-12 13:35:25,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023967333] [2020-10-12 13:35:25,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:35:25,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:35:25,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8605075] [2020-10-12 13:35:25,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:35:25,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:25,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:35:25,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:35:25,138 INFO L87 Difference]: Start difference. First operand 85397 states and 111316 transitions. Second operand 6 states. [2020-10-12 13:35:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:46,796 INFO L93 Difference]: Finished difference Result 189461 states and 253615 transitions. [2020-10-12 13:35:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:35:46,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 407 [2020-10-12 13:35:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:47,174 INFO L225 Difference]: With dead ends: 189461 [2020-10-12 13:35:47,174 INFO L226 Difference]: Without dead ends: 104070 [2020-10-12 13:35:47,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:35:47,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104070 states. [2020-10-12 13:35:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104070 to 102446. [2020-10-12 13:35:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102446 states. [2020-10-12 13:35:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102446 states to 102446 states and 135901 transitions. [2020-10-12 13:35:52,689 INFO L78 Accepts]: Start accepts. Automaton has 102446 states and 135901 transitions. Word has length 407 [2020-10-12 13:35:52,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:52,690 INFO L479 AbstractCegarLoop]: Abstraction has 102446 states and 135901 transitions. [2020-10-12 13:35:52,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:35:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 102446 states and 135901 transitions. [2020-10-12 13:35:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-12 13:35:52,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:52,716 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:52,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:35:52,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash 998794598, now seen corresponding path program 1 times [2020-10-12 13:35:52,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:52,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135074657] [2020-10-12 13:35:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:57,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:57,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-12 13:35:57,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:35:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 13:35:57,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:35:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:35:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 13:35:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:58,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:58,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:35:58,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:58,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:58,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:35:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 13:35:58,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:35:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:35:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:35:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:35:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:35:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 13:35:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:58,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-12 13:35:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:58,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:58,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:35:58,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:58,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 13:35:58,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:35:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-12 13:35:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:58,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:35:58,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:58,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:35:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:35:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 13:35:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:35:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 410 proven. 140 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-12 13:35:59,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135074657] [2020-10-12 13:35:59,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:35:59,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:35:59,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731018086] [2020-10-12 13:35:59,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:35:59,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:59,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:35:59,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:35:59,051 INFO L87 Difference]: Start difference. First operand 102446 states and 135901 transitions. Second operand 10 states.