/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/Problem04_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:41:41,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:41:41,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:41:41,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:41:41,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:41:41,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:41:41,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:41:41,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:41:41,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:41:41,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:41:41,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:41:41,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:41:41,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:41:41,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:41:41,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:41:41,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:41:41,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:41:41,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:41:41,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:41:41,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:41:41,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:41:41,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:41:41,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:41:41,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:41:41,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:41:41,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:41:41,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:41:41,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:41:41,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:41:41,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:41:41,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:41:41,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:41:41,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:41:41,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:41:41,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:41:41,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:41:41,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:41:41,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:41:41,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:41:41,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:41:41,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:41:41,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:41:41,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:41:41,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:41:41,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:41:41,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:41:41,583 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:41:41,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:41:41,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:41:41,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:41:41,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:41:41,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:41:41,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:41:41,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:41:41,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:41:41,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:41:41,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:41:41,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:41:41,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:41:41,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:41:41,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:41:41,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:41:41,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:41:41,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:41:41,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:41:41,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:41:41,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:41:41,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:41:41,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:41:41,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:41:41,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:41:41,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:41:41,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:41:41,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:41:41,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:41:41,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:41:41,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:41:41,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-12 11:41:41,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cc133a3f/882cc2fb2b264e2c8d224075c0e3cf3b/FLAG468e3f2e6 [2020-10-12 11:41:42,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:41:42,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-12 11:41:42,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cc133a3f/882cc2fb2b264e2c8d224075c0e3cf3b/FLAG468e3f2e6 [2020-10-12 11:41:42,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cc133a3f/882cc2fb2b264e2c8d224075c0e3cf3b [2020-10-12 11:41:42,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:41:42,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:41:42,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:41:42,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:41:42,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:41:42,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:42" (1/1) ... [2020-10-12 11:41:42,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490952e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:42, skipping insertion in model container [2020-10-12 11:41:42,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:42" (1/1) ... [2020-10-12 11:41:42,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:41:42,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:41:44,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:41:44,495 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:41:45,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:41:45,126 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:41:45,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45 WrapperNode [2020-10-12 11:41:45,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:41:45,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:41:45,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:41:45,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:41:45,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:41:45,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:41:45,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:41:45,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:41:45,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:41:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:41:45,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:41:45,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:41:45,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:41:45,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:41:45,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:41:45,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:41:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:41:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:41:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:41:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:41:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:41:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:41:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:41:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:41:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:41:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:41:49,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:41:49,433 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:41:49,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:49 BoogieIcfgContainer [2020-10-12 11:41:49,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:41:49,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:41:49,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:41:49,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:41:49,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:41:42" (1/3) ... [2020-10-12 11:41:49,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53beb35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:49, skipping insertion in model container [2020-10-12 11:41:49,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (2/3) ... [2020-10-12 11:41:49,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53beb35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:49, skipping insertion in model container [2020-10-12 11:41:49,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:49" (3/3) ... [2020-10-12 11:41:49,459 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label45.c [2020-10-12 11:41:49,469 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:41:49,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:41:49,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:41:49,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:41:49,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:41:49,519 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:41:49,519 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:41:49,519 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:41:49,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:41:49,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:41:49,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:41:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:41:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2020-10-12 11:41:49,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:49,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:49,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash -214861573, now seen corresponding path program 1 times [2020-10-12 11:41:49,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:49,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376801659] [2020-10-12 11:41:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:55,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 792 [2020-10-12 11:41:55,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-12 11:41:55,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:41:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:41:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:41:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:41:58,321 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-12 11:41:58,488 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-12 11:41:58,696 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-12 11:41:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:59,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:59,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:41:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:41:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:42:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:04,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376801659] [2020-10-12 11:42:04,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:42:04,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:42:04,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891513130] [2020-10-12 11:42:04,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:42:04,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:04,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:42:04,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:42:04,261 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:42:05,157 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-12 11:42:05,467 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2020-10-12 11:42:07,508 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-12 11:42:07,815 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-10-12 11:42:10,658 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-10-12 11:42:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:19,524 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:42:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:42:19,529 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 778 [2020-10-12 11:42:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:19,608 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:42:19,609 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:42:19,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:42:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:42:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:42:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:42:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:42:19,801 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 778 [2020-10-12 11:42:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:19,804 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:42:19,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:42:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:42:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-12 11:42:19,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:19,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:19,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:42:19,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1682771916, now seen corresponding path program 1 times [2020-10-12 11:42:19,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:19,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133601710] [2020-10-12 11:42:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:25,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:25,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 813 [2020-10-12 11:42:25,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:42:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 11:42:25,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:42:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:42:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:42:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:27,215 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-12 11:42:27,440 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 [2020-10-12 11:42:27,578 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-10-12 11:42:27,755 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-10-12 11:42:27,897 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-10-12 11:42:28,052 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-10-12 11:42:28,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:28,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:42:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:28,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:42:28,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:42:28,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:42:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:31,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133601710] [2020-10-12 11:42:31,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:31,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:42:31,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826107589] [2020-10-12 11:42:31,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:42:31,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:42:31,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:42:31,992 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:42:32,623 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:42:36,834 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:42:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:45,583 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:42:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:42:45,586 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 797 [2020-10-12 11:42:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:45,597 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:42:45,598 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:42:45,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:42:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:42:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:42:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:42:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:42:45,659 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 797 [2020-10-12 11:42:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:45,661 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:42:45,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:42:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:42:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-12 11:42:45,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:45,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:45,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:42:45,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:45,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1419404122, now seen corresponding path program 1 times [2020-10-12 11:42:45,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:45,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784693787] [2020-10-12 11:42:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:50,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:50,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-12 11:42:50,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:42:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 11:42:50,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:42:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:42:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:42:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:52,821 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-12 11:42:52,987 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-12 11:42:53,178 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-10-12 11:42:53,358 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-10-12 11:42:53,568 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-12 11:42:53,765 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-12 11:42:53,993 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-10-12 11:42:54,223 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-10-12 11:42:54,472 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 45 [2020-10-12 11:42:54,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:42:54,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:42:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:42:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:42:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:58,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784693787] [2020-10-12 11:42:58,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:58,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:42:58,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342948517] [2020-10-12 11:42:58,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:42:58,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:58,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:42:58,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:42:58,757 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:42:59,259 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:43:03,659 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:43:04,491 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-12 11:43:04,692 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-12 11:43:05,081 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2020-10-12 11:43:05,599 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 110 [2020-10-12 11:43:06,880 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 107 [2020-10-12 11:43:10,511 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2020-10-12 11:43:10,931 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-12 11:43:11,160 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-12 11:43:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:15,800 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:43:15,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:43:15,807 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 804 [2020-10-12 11:43:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:15,827 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:43:15,828 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:43:15,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:43:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:43:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:43:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:43:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:43:15,893 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 804 [2020-10-12 11:43:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:15,894 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:43:15,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:43:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:43:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-12 11:43:15,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:15,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:15,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:43:15,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1436672801, now seen corresponding path program 1 times [2020-10-12 11:43:15,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:15,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802242441] [2020-10-12 11:43:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:21,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:21,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-12 11:43:21,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:43:21,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 11:43:21,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:43:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:43:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 826 [2020-10-12 11:43:21,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:21,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:21,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:43:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:43:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:43:21,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:21,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 11:43:21,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:43:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:43:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:22,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:22,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:22,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 11:43:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:43:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:43:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:43:23,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802242441] [2020-10-12 11:43:23,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:23,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:43:23,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340310496] [2020-10-12 11:43:23,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:43:23,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:43:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:43:23,031 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 8 states. [2020-10-12 11:43:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:35,592 INFO L93 Difference]: Finished difference Result 6574 states and 9697 transitions. [2020-10-12 11:43:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:43:35,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 814 [2020-10-12 11:43:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:35,616 INFO L225 Difference]: With dead ends: 6574 [2020-10-12 11:43:35,617 INFO L226 Difference]: Without dead ends: 4521 [2020-10-12 11:43:35,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:43:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-10-12 11:43:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4489. [2020-10-12 11:43:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4489 states. [2020-10-12 11:43:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6140 transitions. [2020-10-12 11:43:35,725 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6140 transitions. Word has length 814 [2020-10-12 11:43:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:35,727 INFO L479 AbstractCegarLoop]: Abstraction has 4489 states and 6140 transitions. [2020-10-12 11:43:35,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:43:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6140 transitions. [2020-10-12 11:43:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-12 11:43:35,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:35,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:35,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:43:35,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash 849868528, now seen corresponding path program 1 times [2020-10-12 11:43:35,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:35,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762355216] [2020-10-12 11:43:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:36,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:40,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:40,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-12 11:43:40,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:43:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 11:43:40,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:43:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 11:43:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-12 11:43:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:42,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:42,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:42,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:43:42,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:42,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:42,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:42,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:42,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:42,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:43:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:42,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:43:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 11:43:46,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762355216] [2020-10-12 11:43:46,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:46,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:43:46,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124748783] [2020-10-12 11:43:46,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:43:46,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:46,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:43:46,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:43:46,757 INFO L87 Difference]: Start difference. First operand 4489 states and 6140 transitions. Second operand 19 states. [2020-10-12 11:43:47,630 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:43:49,550 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:43:51,810 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:44:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:44:11,363 INFO L93 Difference]: Finished difference Result 9029 states and 13099 transitions. [2020-10-12 11:44:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:44:11,364 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 829 [2020-10-12 11:44:11,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:44:11,387 INFO L225 Difference]: With dead ends: 9029 [2020-10-12 11:44:11,387 INFO L226 Difference]: Without dead ends: 5273 [2020-10-12 11:44:11,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:44:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2020-10-12 11:44:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 5247. [2020-10-12 11:44:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5247 states. [2020-10-12 11:44:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 6914 transitions. [2020-10-12 11:44:11,497 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 6914 transitions. Word has length 829 [2020-10-12 11:44:11,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:44:11,498 INFO L479 AbstractCegarLoop]: Abstraction has 5247 states and 6914 transitions. [2020-10-12 11:44:11,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:44:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 6914 transitions. [2020-10-12 11:44:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-12 11:44:11,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:44:11,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:44:11,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:44:11,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:44:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:44:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash -380380734, now seen corresponding path program 1 times [2020-10-12 11:44:11,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:44:11,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112110989] [2020-10-12 11:44:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:44:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:16,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 896 [2020-10-12 11:44:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:44:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-12 11:44:16,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:44:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 11:44:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 847 [2020-10-12 11:44:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:16,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:44:16,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:17,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:17,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:44:17,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:17,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:17,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:44:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:44:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:17,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:44:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 62 proven. 60 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-12 11:44:17,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112110989] [2020-10-12 11:44:17,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:17,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:44:17,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085259214] [2020-10-12 11:44:17,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:44:17,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:17,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:44:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:44:17,635 INFO L87 Difference]: Start difference. First operand 5247 states and 6914 transitions. Second operand 6 states. [2020-10-12 11:44:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:44:27,175 INFO L93 Difference]: Finished difference Result 12483 states and 17750 transitions. [2020-10-12 11:44:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:44:27,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 876 [2020-10-12 11:44:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:44:27,224 INFO L225 Difference]: With dead ends: 12483 [2020-10-12 11:44:27,225 INFO L226 Difference]: Without dead ends: 7969 [2020-10-12 11:44:27,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 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 11:44:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7969 states. [2020-10-12 11:44:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7969 to 7926. [2020-10-12 11:44:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7926 states. [2020-10-12 11:44:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7926 states to 7926 states and 10904 transitions. [2020-10-12 11:44:27,405 INFO L78 Accepts]: Start accepts. Automaton has 7926 states and 10904 transitions. Word has length 876 [2020-10-12 11:44:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:44:27,406 INFO L479 AbstractCegarLoop]: Abstraction has 7926 states and 10904 transitions. [2020-10-12 11:44:27,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:44:27,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7926 states and 10904 transitions. [2020-10-12 11:44:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2020-10-12 11:44:27,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:44:27,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:44:27,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:44:27,436 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:44:27,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:44:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1272959198, now seen corresponding path program 1 times [2020-10-12 11:44:27,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:44:27,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829150860] [2020-10-12 11:44:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:44:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:32,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:32,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 914 [2020-10-12 11:44:32,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:44:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:44:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:44:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-12 11:44:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-12 11:44:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:34,402 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-12 11:44:34,542 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-12 11:44:34,697 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 40 [2020-10-12 11:44:34,980 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-12 11:44:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:35,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:35,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:44:35,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:35,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:35,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:35,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:35,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:44:35,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:35,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:44:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:35,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 11:44:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 110 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:44:40,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829150860] [2020-10-12 11:44:40,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:40,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:44:40,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30756514] [2020-10-12 11:44:40,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:44:40,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:40,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:44:40,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:44:40,774 INFO L87 Difference]: Start difference. First operand 7926 states and 10904 transitions. Second operand 17 states. [2020-10-12 11:44:42,305 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:44:42,516 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 11:44:49,502 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:44:49,693 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 11:44:54,107 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-10-12 11:44:55,318 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2020-10-12 11:44:57,268 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-10-12 11:44:57,620 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2020-10-12 11:44:58,158 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2020-10-12 11:45:02,996 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2020-10-12 11:45:03,598 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2020-10-12 11:45:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:45:06,864 INFO L93 Difference]: Finished difference Result 15805 states and 22509 transitions. [2020-10-12 11:45:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:45:06,865 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 894 [2020-10-12 11:45:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:45:06,887 INFO L225 Difference]: With dead ends: 15805 [2020-10-12 11:45:06,888 INFO L226 Difference]: Without dead ends: 8612 [2020-10-12 11:45:06,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:45:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8612 states. [2020-10-12 11:45:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8612 to 8589. [2020-10-12 11:45:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8589 states. [2020-10-12 11:45:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8589 states to 8589 states and 11583 transitions. [2020-10-12 11:45:07,049 INFO L78 Accepts]: Start accepts. Automaton has 8589 states and 11583 transitions. Word has length 894 [2020-10-12 11:45:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:45:07,050 INFO L479 AbstractCegarLoop]: Abstraction has 8589 states and 11583 transitions. [2020-10-12 11:45:07,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:45:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 8589 states and 11583 transitions. [2020-10-12 11:45:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-12 11:45:07,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:07,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:45:07,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:45:07,075 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:07,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1838663389, now seen corresponding path program 1 times [2020-10-12 11:45:07,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:07,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250783825] [2020-10-12 11:45:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 937 [2020-10-12 11:45:12,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:45:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-12 11:45:12,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:45:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:45:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 11:45:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:45:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:45:12,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:45:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:45:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:45:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:45:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:45:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:45:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:45:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:45:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:45:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:45:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:45:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:45:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:12,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:45:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:45:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:45:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:45:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:45:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:45:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:45:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:12,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:45:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:45:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 11:45:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:45:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:45:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:45:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 11:45:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 11:45:12,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:45:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:45:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:45:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 11:45:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 154 proven. 49 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 11:45:13,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250783825] [2020-10-12 11:45:13,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:45:13,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:45:13,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051407187] [2020-10-12 11:45:13,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:45:13,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:45:13,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:45:13,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:45:13,288 INFO L87 Difference]: Start difference. First operand 8589 states and 11583 transitions. Second operand 9 states. [2020-10-12 11:45:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:45:24,178 INFO L93 Difference]: Finished difference Result 21906 states and 31740 transitions. [2020-10-12 11:45:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:45:24,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 915 [2020-10-12 11:45:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:45:24,221 INFO L225 Difference]: With dead ends: 21906 [2020-10-12 11:45:24,221 INFO L226 Difference]: Without dead ends: 14050 [2020-10-12 11:45:24,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:45:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14050 states. [2020-10-12 11:45:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14050 to 14007. [2020-10-12 11:45:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14007 states. [2020-10-12 11:45:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 18703 transitions. [2020-10-12 11:45:24,530 INFO L78 Accepts]: Start accepts. Automaton has 14007 states and 18703 transitions. Word has length 915 [2020-10-12 11:45:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:45:24,531 INFO L479 AbstractCegarLoop]: Abstraction has 14007 states and 18703 transitions. [2020-10-12 11:45:24,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:45:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 14007 states and 18703 transitions. [2020-10-12 11:45:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-12 11:45:24,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:24,574 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:45:24,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:45:24,575 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:24,576 INFO L82 PathProgramCache]: Analyzing trace with hash -866746030, now seen corresponding path program 1 times [2020-10-12 11:45:24,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:24,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397638506] [2020-10-12 11:45:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking...