/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:19:44,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:19:44,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:19:44,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:19:44,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:19:44,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:19:44,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:19:44,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:19:44,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:19:44,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:19:44,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:19:44,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:19:44,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:19:44,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:19:44,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:19:44,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:19:44,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:19:44,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:19:44,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:19:44,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:19:44,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:19:44,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:19:44,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:19:44,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:19:44,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:19:44,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:19:44,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:19:44,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:19:44,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:19:44,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:19:44,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:19:44,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:19:44,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:19:44,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:19:44,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:19:44,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:19:44,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:19:44,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:19:44,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:19:44,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:19:44,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:19:44,350 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 [2020-10-14 19:19:44,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:19:44,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:19:44,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:19:44,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:19:44,374 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:19:44,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:19:44,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:19:44,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:19:44,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:19:44,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:19:44,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:19:44,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:19:44,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:19:44,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:19:44,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:19:44,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:19:44,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:19:44,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:19:44,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:19:44,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:19:44,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:19:44,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:19:44,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:19:44,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:19:44,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:19:44,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:19:44,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:19:44,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:19:44,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:19:44,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:19:44,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:19:44,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:19:44,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:19:44,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:19:44,711 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:19:44,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06.c [2020-10-14 19:19:44,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcb9a51c8/82711445a4db4b25969eae87130bfb76/FLAG6ae96724c [2020-10-14 19:19:45,521 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:19:45,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label06.c [2020-10-14 19:19:45,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcb9a51c8/82711445a4db4b25969eae87130bfb76/FLAG6ae96724c [2020-10-14 19:19:45,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcb9a51c8/82711445a4db4b25969eae87130bfb76 [2020-10-14 19:19:45,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:19:45,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:19:45,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:19:45,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:19:45,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:19:45,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:45" (1/1) ... [2020-10-14 19:19:45,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d4e9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:45, skipping insertion in model container [2020-10-14 19:19:45,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:45" (1/1) ... [2020-10-14 19:19:45,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:19:45,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:19:47,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:19:47,216 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:19:47,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:19:47,949 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:19:47,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47 WrapperNode [2020-10-14 19:19:47,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:19:47,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:19:47,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:19:47,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:19:47,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:47,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:48,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:48,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:48,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:48,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:48,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (1/1) ... [2020-10-14 19:19:48,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:19:48,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:19:48,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:19:48,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:19:48,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (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 [2020-10-14 19:19:48,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:19:48,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:19:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:19:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:19:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:19:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:19:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:19:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:19:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:19:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:19:52,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:19:52,810 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:19:52,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:52 BoogieIcfgContainer [2020-10-14 19:19:52,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:19:52,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:19:52,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:19:52,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:19:52,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:19:45" (1/3) ... [2020-10-14 19:19:52,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff338a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:52, skipping insertion in model container [2020-10-14 19:19:52,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:47" (2/3) ... [2020-10-14 19:19:52,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff338a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:52, skipping insertion in model container [2020-10-14 19:19:52,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:52" (3/3) ... [2020-10-14 19:19:52,838 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label06.c [2020-10-14 19:19:52,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:19:52,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:19:52,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:19:52,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:19:52,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:19:52,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:19:52,918 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:19:52,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:19:52,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:19:52,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:19:52,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:19:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:19:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-14 19:19:53,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:53,016 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] [2020-10-14 19:19:53,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:53,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1600443790, now seen corresponding path program 1 times [2020-10-14 19:19:53,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:53,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802218343] [2020-10-14 19:19:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:58,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 787 [2020-10-14 19:19:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:19:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:58,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:19:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-14 19:19:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:19:59,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:59,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:59,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:19:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:59,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:00,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802218343] [2020-10-14 19:20:00,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:20:00,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:20:00,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344408016] [2020-10-14 19:20:00,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:20:00,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:20:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:20:00,768 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:20:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:08,809 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 19:20:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:08,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2020-10-14 19:20:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:08,873 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:20:08,873 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:20:08,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:20:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 19:20:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 19:20:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2729 transitions. [2020-10-14 19:20:09,089 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2729 transitions. Word has length 773 [2020-10-14 19:20:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:09,092 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2729 transitions. [2020-10-14 19:20:09,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:20:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2729 transitions. [2020-10-14 19:20:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-14 19:20:09,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:09,117 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:20:09,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:20:09,118 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash 784920963, now seen corresponding path program 1 times [2020-10-14 19:20:09,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:09,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538211130] [2020-10-14 19:20:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:09,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:14,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:14,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 797 [2020-10-14 19:20:14,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:20:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 19:20:14,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:14,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:20:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-14 19:20:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:15,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:15,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:15,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:20:15,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:15,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:15,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:20:15,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:20:15,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:15,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:20:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:15,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538211130] [2020-10-14 19:20:15,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:15,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:20:15,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410127732] [2020-10-14 19:20:15,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:20:15,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:20:15,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:15,830 INFO L87 Difference]: Start difference. First operand 1689 states and 2729 transitions. Second operand 5 states. [2020-10-14 19:20:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:24,841 INFO L93 Difference]: Finished difference Result 5075 states and 8257 transitions. [2020-10-14 19:20:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:24,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 781 [2020-10-14 19:20:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:24,867 INFO L225 Difference]: With dead ends: 5075 [2020-10-14 19:20:24,868 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 19:20:24,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 19:20:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3388. [2020-10-14 19:20:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2020-10-14 19:20:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4875 transitions. [2020-10-14 19:20:24,959 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4875 transitions. Word has length 781 [2020-10-14 19:20:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:24,961 INFO L479 AbstractCegarLoop]: Abstraction has 3388 states and 4875 transitions. [2020-10-14 19:20:24,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:20:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4875 transitions. [2020-10-14 19:20:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-14 19:20:24,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:24,986 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:20:24,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:20:24,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:24,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1346047879, now seen corresponding path program 1 times [2020-10-14 19:20:24,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:24,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279425295] [2020-10-14 19:20:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:30,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:30,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 804 [2020-10-14 19:20:30,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:20:30,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:30,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:20:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-14 19:20:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:30,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:30,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:20:30,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:30,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:30,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:20:30,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:20:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:30,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:20:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:31,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279425295] [2020-10-14 19:20:31,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:31,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:20:31,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018130241] [2020-10-14 19:20:31,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:20:31,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:20:31,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:31,042 INFO L87 Difference]: Start difference. First operand 3388 states and 4875 transitions. Second operand 5 states. [2020-10-14 19:20:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:39,807 INFO L93 Difference]: Finished difference Result 10154 states and 14775 transitions. [2020-10-14 19:20:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:39,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 788 [2020-10-14 19:20:39,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:39,848 INFO L225 Difference]: With dead ends: 10154 [2020-10-14 19:20:39,849 INFO L226 Difference]: Without dead ends: 6772 [2020-10-14 19:20:39,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2020-10-14 19:20:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6768. [2020-10-14 19:20:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6768 states. [2020-10-14 19:20:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 8915 transitions. [2020-10-14 19:20:40,072 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 8915 transitions. Word has length 788 [2020-10-14 19:20:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:40,077 INFO L479 AbstractCegarLoop]: Abstraction has 6768 states and 8915 transitions. [2020-10-14 19:20:40,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:20:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 8915 transitions. [2020-10-14 19:20:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-14 19:20:40,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:40,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:40,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:20:40,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:40,106 INFO L82 PathProgramCache]: Analyzing trace with hash 919668435, now seen corresponding path program 1 times [2020-10-14 19:20:40,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:40,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891085147] [2020-10-14 19:20:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:40,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:45,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:45,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-14 19:20:45,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:20:45,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 19:20:45,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:45,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:20:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:20:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 621 [2020-10-14 19:20:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:47,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:47,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:20:47,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:47,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:20:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:47,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:47,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:20:47,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:20:47,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:47,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 19:20:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:51,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891085147] [2020-10-14 19:20:51,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:51,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:20:51,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288051458] [2020-10-14 19:20:51,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:20:51,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:51,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:20:51,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:20:51,367 INFO L87 Difference]: Start difference. First operand 6768 states and 8915 transitions. Second operand 17 states. [2020-10-14 19:20:52,695 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 19:21:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:06,616 INFO L93 Difference]: Finished difference Result 14148 states and 19094 transitions. [2020-10-14 19:21:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:21:06,620 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 821 [2020-10-14 19:21:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:06,649 INFO L225 Difference]: With dead ends: 14148 [2020-10-14 19:21:06,650 INFO L226 Difference]: Without dead ends: 7386 [2020-10-14 19:21:06,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:21:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7386 states. [2020-10-14 19:21:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7386 to 7382. [2020-10-14 19:21:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7382 states. [2020-10-14 19:21:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 9540 transitions. [2020-10-14 19:21:06,840 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 9540 transitions. Word has length 821 [2020-10-14 19:21:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:06,843 INFO L479 AbstractCegarLoop]: Abstraction has 7382 states and 9540 transitions. [2020-10-14 19:21:06,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:21:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 9540 transitions. [2020-10-14 19:21:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2020-10-14 19:21:06,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:06,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:21:06,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:21:06,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash -287400984, now seen corresponding path program 1 times [2020-10-14 19:21:06,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:06,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573591259] [2020-10-14 19:21:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:12,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-14 19:21:12,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:21:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:21:12,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:12,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:21:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 19:21:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 555 [2020-10-14 19:21:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:13,519 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-14 19:21:13,631 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-14 19:21:13,752 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-14 19:21:13,866 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-14 19:21:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:14,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:14,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:14,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:14,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:14,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:14,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:21:14,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:14,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:21:14,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:14,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:14,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:21:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:14,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:21:14,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:21:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:14,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:21:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:21:19,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573591259] [2020-10-14 19:21:19,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:19,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:21:19,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978418158] [2020-10-14 19:21:19,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:21:19,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:19,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:21:19,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:21:19,558 INFO L87 Difference]: Start difference. First operand 7382 states and 9540 transitions. Second operand 17 states. [2020-10-14 19:21:20,796 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 19:21:20,973 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-14 19:21:22,419 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-10-14 19:21:23,466 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 114 [2020-10-14 19:21:28,725 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-14 19:21:29,062 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-14 19:21:32,269 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-14 19:21:36,619 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-14 19:21:36,888 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-14 19:21:38,304 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-14 19:21:39,386 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-14 19:21:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:44,543 INFO L93 Difference]: Finished difference Result 15310 states and 20213 transitions. [2020-10-14 19:21:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:21:44,545 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 831 [2020-10-14 19:21:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:44,589 INFO L225 Difference]: With dead ends: 15310 [2020-10-14 19:21:44,589 INFO L226 Difference]: Without dead ends: 7934 [2020-10-14 19:21:44,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2020-10-14 19:21:44,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2020-10-14 19:21:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7930. [2020-10-14 19:21:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7930 states. [2020-10-14 19:21:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 10099 transitions. [2020-10-14 19:21:44,782 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 10099 transitions. Word has length 831 [2020-10-14 19:21:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:44,784 INFO L479 AbstractCegarLoop]: Abstraction has 7930 states and 10099 transitions. [2020-10-14 19:21:44,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:21:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 10099 transitions. [2020-10-14 19:21:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-14 19:21:44,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:44,817 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:21:44,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:21:44,818 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash -844411628, now seen corresponding path program 1 times [2020-10-14 19:21:44,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:44,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293047831] [2020-10-14 19:21:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:44,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:50,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-14 19:21:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:21:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-14 19:21:50,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:50,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:21:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 19:21:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-14 19:21:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:51,724 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-14 19:21:51,907 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-14 19:21:52,104 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-14 19:21:52,389 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2020-10-14 19:21:52,545 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2020-10-14 19:21:52,826 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-10-14 19:21:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:52,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:21:52,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:21:52,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:21:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 19:21:52,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:52,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:21:52,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 19:21:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:21:57,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293047831] [2020-10-14 19:21:57,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:57,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:21:57,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350246322] [2020-10-14 19:21:57,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:21:57,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:21:57,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:21:57,800 INFO L87 Difference]: Start difference. First operand 7930 states and 10099 transitions. Second operand 17 states. [2020-10-14 19:21:58,555 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-14 19:21:59,502 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 19:22:03,431 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2020-10-14 19:22:04,018 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:22:04,401 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2020-10-14 19:22:07,281 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-14 19:22:07,936 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-14 19:22:09,864 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-14 19:22:10,013 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 19:22:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:14,263 INFO L93 Difference]: Finished difference Result 16429 states and 21373 transitions. [2020-10-14 19:22:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 19:22:14,265 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 834 [2020-10-14 19:22:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:14,291 INFO L225 Difference]: With dead ends: 16429 [2020-10-14 19:22:14,292 INFO L226 Difference]: Without dead ends: 8505 [2020-10-14 19:22:14,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:22:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2020-10-14 19:22:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 8499. [2020-10-14 19:22:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8499 states. [2020-10-14 19:22:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 10683 transitions. [2020-10-14 19:22:14,464 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 10683 transitions. Word has length 834 [2020-10-14 19:22:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:14,466 INFO L479 AbstractCegarLoop]: Abstraction has 8499 states and 10683 transitions. [2020-10-14 19:22:14,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:22:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 10683 transitions. [2020-10-14 19:22:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-10-14 19:22:14,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:14,495 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:14,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:22:14,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2038101000, now seen corresponding path program 1 times [2020-10-14 19:22:14,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:14,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020796042] [2020-10-14 19:22:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:19,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 857 [2020-10-14 19:22:19,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:22:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 19:22:19,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:19,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:19,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:22:19,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 19:22:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-14 19:22:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:20,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:20,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:22:20,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:22:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:20,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:22:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:22:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:20,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 19:22:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:22:20,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020796042] [2020-10-14 19:22:20,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:20,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:22:20,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409627743] [2020-10-14 19:22:20,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:22:20,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:20,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:22:20,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:22:20,642 INFO L87 Difference]: Start difference. First operand 8499 states and 10683 transitions. Second operand 5 states. [2020-10-14 19:22:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:30,027 INFO L93 Difference]: Finished difference Result 20377 states and 26455 transitions. [2020-10-14 19:22:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:22:30,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 839 [2020-10-14 19:22:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:30,065 INFO L225 Difference]: With dead ends: 20377 [2020-10-14 19:22:30,066 INFO L226 Difference]: Without dead ends: 11884 [2020-10-14 19:22:30,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:22:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11884 states. [2020-10-14 19:22:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11884 to 11876. [2020-10-14 19:22:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11876 states. [2020-10-14 19:22:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11876 states to 11876 states and 14774 transitions. [2020-10-14 19:22:30,339 INFO L78 Accepts]: Start accepts. Automaton has 11876 states and 14774 transitions. Word has length 839 [2020-10-14 19:22:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:30,340 INFO L479 AbstractCegarLoop]: Abstraction has 11876 states and 14774 transitions. [2020-10-14 19:22:30,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:22:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11876 states and 14774 transitions. [2020-10-14 19:22:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2020-10-14 19:22:30,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:30,377 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:30,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:22:30,378 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1013686260, now seen corresponding path program 1 times [2020-10-14 19:22:30,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:30,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133388814] [2020-10-14 19:22:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:30,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:35,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:35,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 867 [2020-10-14 19:22:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:22:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 19:22:35,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:35,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:22:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 19:22:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-14 19:22:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:35,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:35,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:35,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:35,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:35,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:22:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:35,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:35,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:22:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:36,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:36,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:22:36,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 19:22:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:36,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 19:22:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:22:36,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133388814] [2020-10-14 19:22:36,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:36,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:22:36,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695356630] [2020-10-14 19:22:36,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:22:36,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:36,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:22:36,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:22:36,985 INFO L87 Difference]: Start difference. First operand 11876 states and 14774 transitions. Second operand 5 states. [2020-10-14 19:22:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:47,403 INFO L93 Difference]: Finished difference Result 33861 states and 43148 transitions. [2020-10-14 19:22:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:22:47,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 849 [2020-10-14 19:22:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:47,494 INFO L225 Difference]: With dead ends: 33861 [2020-10-14 19:22:47,494 INFO L226 Difference]: Without dead ends: 21991 [2020-10-14 19:22:47,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:22:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21991 states. [2020-10-14 19:22:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21991 to 21983. [2020-10-14 19:22:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21983 states. [2020-10-14 19:22:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21983 states to 21983 states and 27480 transitions. [2020-10-14 19:22:47,956 INFO L78 Accepts]: Start accepts. Automaton has 21983 states and 27480 transitions. Word has length 849 [2020-10-14 19:22:47,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:47,957 INFO L479 AbstractCegarLoop]: Abstraction has 21983 states and 27480 transitions. [2020-10-14 19:22:47,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:22:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 21983 states and 27480 transitions. [2020-10-14 19:22:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-14 19:22:48,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:48,019 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:22:48,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:22:48,020 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2015254837, now seen corresponding path program 1 times [2020-10-14 19:22:48,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:48,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410485682] [2020-10-14 19:22:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:53,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:53,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 897 [2020-10-14 19:22:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:22:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 19:22:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:22:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 19:22:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-14 19:22:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:53,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:53,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 19:22:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:22:54,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410485682] [2020-10-14 19:22:54,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:54,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:22:54,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797936157] [2020-10-14 19:22:54,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:22:54,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:54,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:22:54,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:22:54,212 INFO L87 Difference]: Start difference. First operand 21983 states and 27480 transitions. Second operand 5 states. [2020-10-14 19:23:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:23:06,041 INFO L93 Difference]: Finished difference Result 53239 states and 68637 transitions. [2020-10-14 19:23:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:23:06,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 881 [2020-10-14 19:23:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:23:06,136 INFO L225 Difference]: With dead ends: 53239 [2020-10-14 19:23:06,136 INFO L226 Difference]: Without dead ends: 31262 [2020-10-14 19:23:06,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:23:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31262 states. [2020-10-14 19:23:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31262 to 31254. [2020-10-14 19:23:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31254 states. [2020-10-14 19:23:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31254 states to 31254 states and 38763 transitions. [2020-10-14 19:23:06,715 INFO L78 Accepts]: Start accepts. Automaton has 31254 states and 38763 transitions. Word has length 881 [2020-10-14 19:23:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:23:06,716 INFO L479 AbstractCegarLoop]: Abstraction has 31254 states and 38763 transitions. [2020-10-14 19:23:06,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:23:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 31254 states and 38763 transitions. [2020-10-14 19:23:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2020-10-14 19:23:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:23:06,827 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:23:06,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:23:06,827 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:23:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:23:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -455797524, now seen corresponding path program 1 times [2020-10-14 19:23:06,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:23:06,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269421151] [2020-10-14 19:23:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:23:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:11,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:11,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 960 [2020-10-14 19:23:11,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:23:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:23:11,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:11,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:23:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-14 19:23:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 503 [2020-10-14 19:23:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:13,210 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-14 19:23:13,366 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-14 19:23:13,491 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-14 19:23:13,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:23:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:23:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:23:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:23:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:13,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:23:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:23:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:23:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:23:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:23:14,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 19:23:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:23:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:23:18,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269421151] [2020-10-14 19:23:18,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:23:18,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:23:18,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111991933] [2020-10-14 19:23:18,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:23:18,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:23:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:23:18,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:23:18,214 INFO L87 Difference]: Start difference. First operand 31254 states and 38763 transitions. Second operand 17 states. [2020-10-14 19:23:21,431 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 19:23:21,598 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 19:23:23,491 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94