/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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:16:25,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:16:25,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:16:25,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:16:25,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:16:25,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:16:25,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:16:25,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:16:25,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:16:25,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:16:25,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:16:25,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:16:25,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:16:25,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:16:25,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:16:25,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:16:25,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:16:25,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:16:25,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:16:25,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:16:25,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:16:25,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:16:25,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:16:25,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:16:25,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:16:25,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:16:25,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:16:25,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:16:25,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:16:25,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:16:25,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:16:25,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:16:25,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:16:25,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:16:25,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:16:25,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:16:25,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:16:25,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:16:25,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:16:25,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:16:25,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:16:25,314 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 12:16:25,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:16:25,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:16:25,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:16:25,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:16:25,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:16:25,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:16:25,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:16:25,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:16:25,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:16:25,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:16:25,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:16:25,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:16:25,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:16:25,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:16:25,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:16:25,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:16:25,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:16:25,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:16:25,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:16:25,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:16:25,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:16:25,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:16:25,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:16:25,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:16:25,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:16:25,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:16:25,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:16:25,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:16:25,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:16:25,347 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 12:16:25,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:16:25,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:16:25,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:16:25,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:16:25,653 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:16:25,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label56.c [2020-10-12 12:16:25,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56c2e82fa/ca1d63fcb3f74de1ab136f884eb5ecc3/FLAG49354b2b8 [2020-10-12 12:16:26,631 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:16:26,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label56.c [2020-10-12 12:16:26,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56c2e82fa/ca1d63fcb3f74de1ab136f884eb5ecc3/FLAG49354b2b8 [2020-10-12 12:16:27,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56c2e82fa/ca1d63fcb3f74de1ab136f884eb5ecc3 [2020-10-12 12:16:27,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:16:27,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:16:27,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:16:27,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:16:27,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:16:27,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:16:27" (1/1) ... [2020-10-12 12:16:27,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:27, skipping insertion in model container [2020-10-12 12:16:27,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:16:27" (1/1) ... [2020-10-12 12:16:27,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:16:27,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:16:29,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:16:29,783 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:16:30,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:16:30,964 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:16:30,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30 WrapperNode [2020-10-12 12:16:30,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:16:30,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:16:30,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:16:30,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:16:30,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:30,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:31,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:31,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:31,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:31,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:31,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (1/1) ... [2020-10-12 12:16:31,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:16:31,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:16:31,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:16:31,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:16:31,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (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 12:16:31,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:16:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:16:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:16:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:16:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:16:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:16:31,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:16:31,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:16:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:16:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:16:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:16:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:16:38,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:16:38,877 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:16:38,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:16:38 BoogieIcfgContainer [2020-10-12 12:16:38,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:16:38,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:16:38,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:16:38,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:16:38,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:16:27" (1/3) ... [2020-10-12 12:16:38,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:16:38, skipping insertion in model container [2020-10-12 12:16:38,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:16:30" (2/3) ... [2020-10-12 12:16:38,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:16:38, skipping insertion in model container [2020-10-12 12:16:38,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:16:38" (3/3) ... [2020-10-12 12:16:38,909 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label56.c [2020-10-12 12:16:38,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:16:38,927 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:16:38,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:16:38,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:16:38,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:16:38,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:16:38,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:16:38,973 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:16:38,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:16:38,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:16:38,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:16:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:16:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-12 12:16:39,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:16:39,066 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] [2020-10-12 12:16:39,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:16:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:16:39,074 INFO L82 PathProgramCache]: Analyzing trace with hash -121403057, now seen corresponding path program 1 times [2020-10-12 12:16:39,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:16:39,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401438966] [2020-10-12 12:16:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:16:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:45,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-12 12:16:45,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:16:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-12 12:16:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:16:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:16:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:16:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:16:49,419 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-12 12:16:49,685 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-12 12:16:49,945 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-12 12:16:50,240 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-12 12:16:50,570 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-12 12:16:50,845 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-12 12:16:51,075 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-12 12:16:51,355 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2020-10-12 12:16:51,592 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-10-12 12:16:51,772 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-12 12:16:51,949 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-12 12:16:52,639 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:16:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:16:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:52,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:52,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:16:52,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:16:52,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 12:16:52,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:16:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:16:52,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:16:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:04,795 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 12:17:04,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401438966] [2020-10-12 12:17:04,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:17:04,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:17:04,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620179478] [2020-10-12 12:17:04,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:17:04,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:17:04,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:17:04,828 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:17:05,260 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 12:17:06,051 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-12 12:17:06,818 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 169 [2020-10-12 12:17:07,642 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 179 [2020-10-12 12:17:11,859 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 178 [2020-10-12 12:17:15,114 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 176 [2020-10-12 12:17:17,713 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 161 [2020-10-12 12:17:18,462 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 171 [2020-10-12 12:17:19,484 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 168 [2020-10-12 12:17:29,329 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 163 [2020-10-12 12:17:30,052 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 169 [2020-10-12 12:17:33,385 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 167 [2020-10-12 12:17:41,383 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2020-10-12 12:17:42,107 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 164 [2020-10-12 12:17:44,629 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 163 [2020-10-12 12:17:58,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:58,123 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:17:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:17:58,126 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 966 [2020-10-12 12:17:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:58,167 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:17:58,167 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:17:58,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:17:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:17:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:17:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:17:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3052 transitions. [2020-10-12 12:17:58,369 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3052 transitions. Word has length 966 [2020-10-12 12:17:58,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:58,377 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3052 transitions. [2020-10-12 12:17:58,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:17:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3052 transitions. [2020-10-12 12:17:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-12 12:17:58,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:58,432 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] [2020-10-12 12:17:58,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:17:58,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1407124766, now seen corresponding path program 1 times [2020-10-12 12:17:58,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:58,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193730994] [2020-10-12 12:17:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-12 12:18:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:18:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-12 12:18:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:18:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:18:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 973 [2020-10-12 12:18:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:04,797 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:04,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:04,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:18:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:05,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:05,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:05,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 12:18:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:18:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:06,505 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 12:18:06,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193730994] [2020-10-12 12:18:06,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:06,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:18:06,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43876700] [2020-10-12 12:18:06,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:18:06,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:06,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:18:06,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:18:06,529 INFO L87 Difference]: Start difference. First operand 2019 states and 3052 transitions. Second operand 6 states. [2020-10-12 12:18:06,691 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:18:07,157 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:18:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:29,683 INFO L93 Difference]: Finished difference Result 5489 states and 9494 transitions. [2020-10-12 12:18:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:18:29,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1036 [2020-10-12 12:18:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:29,711 INFO L225 Difference]: With dead ends: 5489 [2020-10-12 12:18:29,711 INFO L226 Difference]: Without dead ends: 4230 [2020-10-12 12:18:29,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:18:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2020-10-12 12:18:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4148. [2020-10-12 12:18:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4148 states. [2020-10-12 12:18:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6501 transitions. [2020-10-12 12:18:29,839 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6501 transitions. Word has length 1036 [2020-10-12 12:18:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:29,841 INFO L479 AbstractCegarLoop]: Abstraction has 4148 states and 6501 transitions. [2020-10-12 12:18:29,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:18:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6501 transitions. [2020-10-12 12:18:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-12 12:18:29,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:29,869 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:18:29,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:18:29,869 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:29,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1507936133, now seen corresponding path program 1 times [2020-10-12 12:18:29,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:29,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67927122] [2020-10-12 12:18:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:35,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-12 12:18:35,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:18:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 12:18:35,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:18:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:18:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:35,422 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:18:35,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:35,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:35,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:35,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 12:18:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:18:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 12:18:35,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:18:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 12:18:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 81 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:18:36,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67927122] [2020-10-12 12:18:36,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:36,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:18:36,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113777162] [2020-10-12 12:18:36,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:18:36,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:18:36,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:18:36,541 INFO L87 Difference]: Start difference. First operand 4148 states and 6501 transitions. Second operand 7 states. [2020-10-12 12:18:36,720 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:18:37,938 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:18:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:58,462 INFO L93 Difference]: Finished difference Result 10879 states and 18066 transitions. [2020-10-12 12:18:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:18:58,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1053 [2020-10-12 12:18:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:58,499 INFO L225 Difference]: With dead ends: 10879 [2020-10-12 12:18:58,499 INFO L226 Difference]: Without dead ends: 7491 [2020-10-12 12:18:58,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:18:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7491 states. [2020-10-12 12:18:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7491 to 7380. [2020-10-12 12:18:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7380 states. [2020-10-12 12:18:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 10958 transitions. [2020-10-12 12:18:58,710 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 10958 transitions. Word has length 1053 [2020-10-12 12:18:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:58,711 INFO L479 AbstractCegarLoop]: Abstraction has 7380 states and 10958 transitions. [2020-10-12 12:18:58,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:18:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 10958 transitions. [2020-10-12 12:18:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2020-10-12 12:18:58,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:58,747 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:18:58,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:18:58,747 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1380519367, now seen corresponding path program 1 times [2020-10-12 12:18:58,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:58,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469282934] [2020-10-12 12:18:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:04,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:04,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1124 [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5294 [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 991 [2020-10-12 12:19:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:05,398 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:19:05,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:19:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:05,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:19:05,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:05,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:19:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:19:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:19:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:19:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:19:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:05,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:05,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:19:05,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:05,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 12:19:05,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:19:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:19:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 12:19:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:19:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:05,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:19:05,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:19:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 12:19:05,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:19:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:19:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:19:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 130 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:19:06,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469282934] [2020-10-12 12:19:06,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:19:06,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:19:06,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003978798] [2020-10-12 12:19:06,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:19:06,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:19:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:19:06,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:19:06,915 INFO L87 Difference]: Start difference. First operand 7380 states and 10958 transitions. Second operand 7 states. [2020-10-12 12:19:07,079 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:19:08,381 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:19:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:19:25,968 INFO L93 Difference]: Finished difference Result 20761 states and 32420 transitions. [2020-10-12 12:19:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:19:25,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1104 [2020-10-12 12:19:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:19:26,046 INFO L225 Difference]: With dead ends: 20761 [2020-10-12 12:19:26,047 INFO L226 Difference]: Without dead ends: 14141 [2020-10-12 12:19:26,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:19:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2020-10-12 12:19:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 13955. [2020-10-12 12:19:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13955 states. [2020-10-12 12:19:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13955 states to 13955 states and 20335 transitions. [2020-10-12 12:19:26,579 INFO L78 Accepts]: Start accepts. Automaton has 13955 states and 20335 transitions. Word has length 1104 [2020-10-12 12:19:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:19:26,579 INFO L479 AbstractCegarLoop]: Abstraction has 13955 states and 20335 transitions. [2020-10-12 12:19:26,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:19:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 13955 states and 20335 transitions. [2020-10-12 12:19:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1118 [2020-10-12 12:19:26,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:19:26,646 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:19:26,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:19:26,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:19:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:19:26,647 INFO L82 PathProgramCache]: Analyzing trace with hash 685304799, now seen corresponding path program 1 times [2020-10-12 12:19:26,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:19:26,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858658747] [2020-10-12 12:19:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:19:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:31,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:31,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-12 12:19:31,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:19:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 12:19:31,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:19:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:19:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 12:19:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:32,221 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:19:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:19:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:19:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:19:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:19:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:19:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:19:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:19:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:32,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:32,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:19:32,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:19:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-12 12:19:32,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:19:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:19:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:19:32,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:19:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:32,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:32,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 12:19:32,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:32,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 12:19:32,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:19:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:19:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 12:19:32,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-12 12:19:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:32,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:32,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 12:19:32,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:19:32,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:19:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 12:19:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:19:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 147 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:19:33,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858658747] [2020-10-12 12:19:33,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:19:33,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:19:33,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457783823] [2020-10-12 12:19:33,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:19:33,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:19:33,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:19:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:19:33,371 INFO L87 Difference]: Start difference. First operand 13955 states and 20335 transitions. Second operand 8 states. [2020-10-12 12:19:33,534 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:19:35,020 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:19:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:19:52,795 INFO L93 Difference]: Finished difference Result 41025 states and 63964 transitions. [2020-10-12 12:19:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:19:52,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1117 [2020-10-12 12:19:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:19:52,905 INFO L225 Difference]: With dead ends: 41025 [2020-10-12 12:19:52,905 INFO L226 Difference]: Without dead ends: 27830 [2020-10-12 12:19:52,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 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 12:19:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27830 states. [2020-10-12 12:19:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27830 to 27487. [2020-10-12 12:19:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27487 states. [2020-10-12 12:19:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27487 states to 27487 states and 39580 transitions. [2020-10-12 12:19:53,806 INFO L78 Accepts]: Start accepts. Automaton has 27487 states and 39580 transitions. Word has length 1117 [2020-10-12 12:19:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:19:53,806 INFO L479 AbstractCegarLoop]: Abstraction has 27487 states and 39580 transitions. [2020-10-12 12:19:53,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:19:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 27487 states and 39580 transitions. [2020-10-12 12:19:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2020-10-12 12:19:53,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:19:53,913 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:19:53,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:19:53,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:19:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:19:53,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1809487340, now seen corresponding path program 1 times [2020-10-12 12:19:53,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:19:53,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176912242] [2020-10-12 12:19:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:19:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:59,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:59,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1142 [2020-10-12 12:19:59,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:19:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-12 12:19:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 12:19:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:19:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 12:19:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:59,597 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:19:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:19:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:59,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:19:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:19:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:19:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:19:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:19:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:19:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 12:19:59,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:19:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:19:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:19:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:19:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:19:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:20:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:20:00,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:20:00,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:20:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:20:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 12:20:00,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:20:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:20:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:20:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:20:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:20:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 12:20:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:20:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:20:00,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:20:00,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:20:00,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:20:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 12:20:00,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:20:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:20:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:20:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:20:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:20:00,350 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-12 12:20:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 12:20:01,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176912242] [2020-10-12 12:20:01,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:20:01,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 12:20:01,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43235341] [2020-10-12 12:20:01,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 12:20:01,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:20:01,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 12:20:01,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 12:20:01,224 INFO L87 Difference]: Start difference. First operand 27487 states and 39580 transitions. Second operand 10 states. [2020-10-12 12:20:01,371 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-12 12:20:01,546 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:20:02,363 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-12 12:20:02,665 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 12:20:02,957 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-12 12:20:03,341 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-12 12:20:04,416 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-12 12:20:05,436 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 137