/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/Problem06_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:11:09,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:11:09,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:11:09,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:11:09,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:11:09,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:11:09,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:11:09,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:11:09,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:11:09,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:11:09,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:11:09,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:11:09,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:11:09,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:11:09,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:11:09,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:11:09,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:11:09,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:11:09,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:11:09,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:11:09,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:11:09,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:11:09,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:11:09,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:11:09,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:11:09,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:11:09,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:11:09,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:11:09,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:11:09,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:11:09,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:11:09,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:11:09,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:11:09,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:11:09,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:11:09,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:11:09,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:11:09,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:11:09,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:11:09,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:11:09,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:11:09,335 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 12:11:09,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:11:09,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:11:09,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:11:09,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:11:09,373 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:11:09,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:11:09,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:11:09,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:11:09,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:11:09,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:11:09,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:11:09,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:11:09,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:11:09,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:11:09,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:11:09,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:11:09,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:11:09,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:11:09,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:11:09,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:11:09,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:11:09,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:09,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:11:09,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:11:09,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:11:09,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:11:09,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:11:09,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:11:09,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:11:09,379 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 12:11:09,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:11:09,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:11:09,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:11:09,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:11:09,676 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:11:09,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-12 12:11:09,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ae82c58a/b01da663472e4967a4a63a5f62ba2ecf/FLAGb45f62289 [2020-10-12 12:11:10,595 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:11:10,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-12 12:11:10,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ae82c58a/b01da663472e4967a4a63a5f62ba2ecf/FLAGb45f62289 [2020-10-12 12:11:11,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ae82c58a/b01da663472e4967a4a63a5f62ba2ecf [2020-10-12 12:11:11,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:11:11,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:11:11,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:11,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:11:11,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:11:11,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:11" (1/1) ... [2020-10-12 12:11:11,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:11, skipping insertion in model container [2020-10-12 12:11:11,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:11" (1/1) ... [2020-10-12 12:11:11,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:11:11,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:11:13,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:13,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:11:14,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:15,031 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:11:15,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15 WrapperNode [2020-10-12 12:11:15,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:15,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:11:15,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:11:15,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:11:15,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (1/1) ... [2020-10-12 12:11:15,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:11:15,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:11:15,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:11:15,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:11:15,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (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 12:11:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:11:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:11:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:11:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:11:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:11:15,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:11:15,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:11:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:11:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:11:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:11:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:11:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:11:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:11:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:11:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:11:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:11:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:11:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:11:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:11:22,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:11:22,511 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:11:22,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:22 BoogieIcfgContainer [2020-10-12 12:11:22,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:11:22,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:11:22,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:11:22,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:11:22,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:11:11" (1/3) ... [2020-10-12 12:11:22,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:22, skipping insertion in model container [2020-10-12 12:11:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:15" (2/3) ... [2020-10-12 12:11:22,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:22, skipping insertion in model container [2020-10-12 12:11:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:22" (3/3) ... [2020-10-12 12:11:22,537 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label31.c [2020-10-12 12:11:22,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:11:22,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:11:22,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:11:22,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:11:22,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:11:22,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:11:22,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:11:22,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:11:22,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:11:22,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:11:22,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:11:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:11:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-12 12:11:22,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:11:22,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:22,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:11:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:11:22,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1364173768, now seen corresponding path program 1 times [2020-10-12 12:11:22,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:11:22,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405291266] [2020-10-12 12:11:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:11:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:28,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:28,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-12 12:11:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:11:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5239 [2020-10-12 12:11:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:11:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:11:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:11:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:11:32,716 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:11:32,910 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:11:33,097 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:11:33,308 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-12 12:11:33,479 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-12 12:11:33,672 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-12 12:11:33,913 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-12 12:11:34,109 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-12 12:11:34,305 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-12 12:11:34,516 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-12 12:11:34,671 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 12:11:35,170 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:11:35,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:11:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:35,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:35,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:11:35,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 12:11:35,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:11:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:11:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:11:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:11:46,718 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 12:11:46,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405291266] [2020-10-12 12:11:46,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:11:46,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:11:46,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725432375] [2020-10-12 12:11:46,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:11:46,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:11:46,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:11:46,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:11:46,740 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:11:47,107 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:11:47,695 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 12:11:48,287 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 12:11:48,898 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-12 12:11:52,544 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 173 [2020-10-12 12:11:55,364 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-12 12:11:57,703 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 163 [2020-10-12 12:11:58,335 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 177 [2020-10-12 12:11:59,745 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 198 DAG size of output: 166 [2020-10-12 12:12:08,518 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2020-10-12 12:12:09,157 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 178 [2020-10-12 12:12:11,953 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 175 [2020-10-12 12:12:18,962 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 163 [2020-10-12 12:12:19,635 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-10-12 12:12:22,017 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2020-10-12 12:12:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:12:33,929 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:12:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:12:33,932 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1003 [2020-10-12 12:12:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:12:33,975 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:12:33,975 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:12:33,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:12:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:12:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:12:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:12:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:12:34,163 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 1003 [2020-10-12 12:12:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:12:34,166 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:12:34,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:12:34,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:12:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-12 12:12:34,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:12:34,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:34,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:12:34,206 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:12:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:12:34,207 INFO L82 PathProgramCache]: Analyzing trace with hash 453343877, now seen corresponding path program 1 times [2020-10-12 12:12:34,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:12:34,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252078055] [2020-10-12 12:12:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:12:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:39,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:39,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-12 12:12:39,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:12:39,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-12 12:12:39,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:12:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:12:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-12 12:12:39,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:12:40,697 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:12:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:12:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:40,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:40,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:12:40,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:12:40,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:12:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:12:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:12:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:12:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:40,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:12:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 12:12:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:12:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:12:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:12:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:12:42,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252078055] [2020-10-12 12:12:42,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:12:42,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:12:42,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304352655] [2020-10-12 12:12:42,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:12:42,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:12:42,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:12:42,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:12:42,263 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:12:42,674 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:12:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:12:57,109 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:12:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:12:57,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1073 [2020-10-12 12:12:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:12:57,129 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:12:57,129 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:12:57,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:12:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:12:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:12:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:12:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:12:57,217 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1073 [2020-10-12 12:12:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:12:57,219 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:12:57,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:12:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:12:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-12 12:12:57,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:12:57,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:57,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:12:57,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:12:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:12:57,245 INFO L82 PathProgramCache]: Analyzing trace with hash -373995534, now seen corresponding path program 1 times [2020-10-12 12:12:57,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:12:57,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363146359] [2020-10-12 12:12:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:12:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:02,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:02,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1102 [2020-10-12 12:13:02,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:13:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-12 12:13:02,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:13:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 12:13:02,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:03,029 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:03,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:03,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:03,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 12:13:03,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:03,177 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:13:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:03,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:03,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 12:13:03,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:13:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:03,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:13:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 12:13:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:13:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:13:04,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363146359] [2020-10-12 12:13:04,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:04,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:13:04,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503294108] [2020-10-12 12:13:04,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:13:04,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:13:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:13:04,080 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 8 states. [2020-10-12 12:13:04,216 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:05,256 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:13:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:21,265 INFO L93 Difference]: Finished difference Result 7679 states and 12113 transitions. [2020-10-12 12:13:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:13:21,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1082 [2020-10-12 12:13:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:21,293 INFO L225 Difference]: With dead ends: 7679 [2020-10-12 12:13:21,293 INFO L226 Difference]: Without dead ends: 5352 [2020-10-12 12:13:21,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 12:13:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2020-10-12 12:13:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5289. [2020-10-12 12:13:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-10-12 12:13:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 7682 transitions. [2020-10-12 12:13:21,467 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 7682 transitions. Word has length 1082 [2020-10-12 12:13:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:21,467 INFO L479 AbstractCegarLoop]: Abstraction has 5289 states and 7682 transitions. [2020-10-12 12:13:21,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:13:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 7682 transitions. [2020-10-12 12:13:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2020-10-12 12:13:21,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:21,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:21,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:13:21,501 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1293378442, now seen corresponding path program 1 times [2020-10-12 12:13:21,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:21,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760876312] [2020-10-12 12:13:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:23,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1109 [2020-10-12 12:13:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:13:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 12:13:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:13:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 12:13:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1011 [2020-10-12 12:13:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:27,654 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:27,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:27,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:27,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:27,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:27,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 12:13:27,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:27,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:13:27,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 12:13:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:13:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:13:29,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760876312] [2020-10-12 12:13:29,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:29,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:13:29,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753903507] [2020-10-12 12:13:29,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:13:29,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:29,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:13:29,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:29,442 INFO L87 Difference]: Start difference. First operand 5289 states and 7682 transitions. Second operand 6 states. [2020-10-12 12:13:30,014 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:47,444 INFO L93 Difference]: Finished difference Result 11969 states and 18442 transitions. [2020-10-12 12:13:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:13:47,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1089 [2020-10-12 12:13:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:47,477 INFO L225 Difference]: With dead ends: 11969 [2020-10-12 12:13:47,477 INFO L226 Difference]: Without dead ends: 7440 [2020-10-12 12:13:47,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:13:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2020-10-12 12:13:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 7389. [2020-10-12 12:13:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7389 states. [2020-10-12 12:13:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7389 states to 7389 states and 10561 transitions. [2020-10-12 12:13:47,658 INFO L78 Accepts]: Start accepts. Automaton has 7389 states and 10561 transitions. Word has length 1089 [2020-10-12 12:13:47,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:47,660 INFO L479 AbstractCegarLoop]: Abstraction has 7389 states and 10561 transitions. [2020-10-12 12:13:47,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:13:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7389 states and 10561 transitions. [2020-10-12 12:13:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2020-10-12 12:13:47,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:47,692 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:47,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:13:47,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:47,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:47,693 INFO L82 PathProgramCache]: Analyzing trace with hash -975994807, now seen corresponding path program 1 times [2020-10-12 12:13:47,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:47,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67923296] [2020-10-12 12:13:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:52,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1123 [2020-10-12 12:13:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:13:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 12:13:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:13:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 12:13:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:53,197 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:53,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:53,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:53,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:53,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:53,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:13:53,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:13:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:53,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:53,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:53,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:13:53,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 12:13:53,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 12:13:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 12:13:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:53,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:53,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 12:13:53,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 12:13:53,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 12:13:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 94 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:13:54,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67923296] [2020-10-12 12:13:54,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:54,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 12:13:54,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450261445] [2020-10-12 12:13:54,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 12:13:54,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:54,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 12:13:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 12:13:54,490 INFO L87 Difference]: Start difference. First operand 7389 states and 10561 transitions. Second operand 9 states. [2020-10-12 12:13:54,655 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:13:55,942 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:13:57,131 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:14:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:19,595 INFO L93 Difference]: Finished difference Result 20921 states and 30326 transitions. [2020-10-12 12:14:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 12:14:19,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1101 [2020-10-12 12:14:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:19,667 INFO L225 Difference]: With dead ends: 20921 [2020-10-12 12:14:19,667 INFO L226 Difference]: Without dead ends: 14292 [2020-10-12 12:14:19,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:14:19,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14292 states. [2020-10-12 12:14:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14292 to 13980. [2020-10-12 12:14:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13980 states. [2020-10-12 12:14:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13980 states to 13980 states and 19808 transitions. [2020-10-12 12:14:20,127 INFO L78 Accepts]: Start accepts. Automaton has 13980 states and 19808 transitions. Word has length 1101 [2020-10-12 12:14:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:20,127 INFO L479 AbstractCegarLoop]: Abstraction has 13980 states and 19808 transitions. [2020-10-12 12:14:20,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 12:14:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 13980 states and 19808 transitions. [2020-10-12 12:14:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-12 12:14:20,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:20,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:20,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:14:20,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1697383835, now seen corresponding path program 1 times [2020-10-12 12:14:20,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:20,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789828423] [2020-10-12 12:14:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1124 [2020-10-12 12:14:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:14:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5231 [2020-10-12 12:14:25,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:14:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 12:14:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:25,841 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:25,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:25,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 12:14:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:26,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:14:26,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-12 12:14:26,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:26,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:26,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:14:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:14:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:26,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 12:14:26,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:26,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 12:14:26,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 12:14:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:26,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 12:14:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 12:14:26,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:14:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 12:14:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:14:27,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789828423] [2020-10-12 12:14:27,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:27,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:14:27,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426524933] [2020-10-12 12:14:27,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:14:27,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:14:27,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:14:27,013 INFO L87 Difference]: Start difference. First operand 13980 states and 19808 transitions. Second operand 8 states. [2020-10-12 12:14:27,222 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:14:28,541 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:14:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:45,852 INFO L93 Difference]: Finished difference Result 40754 states and 61013 transitions. [2020-10-12 12:14:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:14:45,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1102 [2020-10-12 12:14:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:45,953 INFO L225 Difference]: With dead ends: 40754 [2020-10-12 12:14:45,953 INFO L226 Difference]: Without dead ends: 27534 [2020-10-12 12:14:45,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 12:14:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27534 states. [2020-10-12 12:14:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27534 to 27264. [2020-10-12 12:14:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27264 states. [2020-10-12 12:14:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27264 states to 27264 states and 37950 transitions. [2020-10-12 12:14:46,669 INFO L78 Accepts]: Start accepts. Automaton has 27264 states and 37950 transitions. Word has length 1102 [2020-10-12 12:14:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:46,670 INFO L479 AbstractCegarLoop]: Abstraction has 27264 states and 37950 transitions. [2020-10-12 12:14:46,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:14:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 27264 states and 37950 transitions. [2020-10-12 12:14:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2020-10-12 12:14:46,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:46,765 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:46,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 12:14:46,765 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash 483231414, now seen corresponding path program 1 times [2020-10-12 12:14:46,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:46,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009494117] [2020-10-12 12:14:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-12 12:14:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:14:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 12:14:52,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 12:14:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 12:14:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:52,628 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:52,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:52,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:52,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:52,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:14:52,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:52,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:52,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:52,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:14:52,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 12:14:52,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:14:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:52,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:14:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:14:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:14:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 12:14:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:53,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:53,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:14:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0