/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:39,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:39,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:39,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:39,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:39,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:39,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:39,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:39,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:39,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:39,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:39,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:39,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:39,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:39,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:39,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:39,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:39,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:39,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:39,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:39,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:39,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:39,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:39,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:39,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:39,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:39,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:39,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:39,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:39,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:39,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:39,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:39,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:39,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:39,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:39,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:39,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:39,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:39,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:39,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:39,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:39,137 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 [2020-09-24 21:45:39,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:39,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:39,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:39,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:39,190 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:39,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:39,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:39,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:39,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:39,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:39,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:39,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:39,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:39,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:39,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:39,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:39,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:39,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:39,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:39,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:39,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:39,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:39,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:39,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:39,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:39,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:39,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:39,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:39,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:39,197 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:39,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:39,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:39,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:39,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:39,678 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:39,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-24 21:45:39,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32f4a5b77/16a062d270ff4b04991356365bbc3d35/FLAG7f0028250 [2020-09-24 21:45:40,459 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:40,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-24 21:45:40,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32f4a5b77/16a062d270ff4b04991356365bbc3d35/FLAG7f0028250 [2020-09-24 21:45:40,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32f4a5b77/16a062d270ff4b04991356365bbc3d35 [2020-09-24 21:45:40,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:40,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:40,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:40,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:40,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:40,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:40" (1/1) ... [2020-09-24 21:45:40,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:40, skipping insertion in model container [2020-09-24 21:45:40,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:40" (1/1) ... [2020-09-24 21:45:40,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:40,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:41,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:41,405 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:41,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:41,562 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:41,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41 WrapperNode [2020-09-24 21:45:41,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:41,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:41,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:41,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:41,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:41,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:41,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:41,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:41,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (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 [2020-09-24 21:45:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:43,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:43,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:43,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:43 BoogieIcfgContainer [2020-09-24 21:45:43,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:43,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:43,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:43,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:43,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:40" (1/3) ... [2020-09-24 21:45:43,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:43, skipping insertion in model container [2020-09-24 21:45:43,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (2/3) ... [2020-09-24 21:45:43,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:43, skipping insertion in model container [2020-09-24 21:45:43,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:43" (3/3) ... [2020-09-24 21:45:43,268 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-24 21:45:43,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:43,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:43,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:43,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:43,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:43,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:43,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:43,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:43,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:43,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:43,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 21:45:43,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:43,421 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] [2020-09-24 21:45:43,421 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-24 21:45:43,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:43,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-24 21:45:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:45:44,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-24 21:45:44,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 21:45:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:45:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:44,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:45:44,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:44,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-24 21:45:44,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:44,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:45:44,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5783190] [2020-09-24 21:45:44,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:45:44,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:44,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:45:44,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:44,533 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:45:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:47,277 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-24 21:45:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:45:47,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-24 21:45:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:47,305 INFO L225 Difference]: With dead ends: 1226 [2020-09-24 21:45:47,305 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 21:45:47,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 21:45:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-24 21:45:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:45:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-24 21:45:47,444 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-24 21:45:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:47,445 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-24 21:45:47,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:45:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-24 21:45:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 21:45:47,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:47,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:47,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:47,457 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-24 21:45:47,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:47,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712731981] [2020-09-24 21:45:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 21:45:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:45:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:52,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:52,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:52,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:52,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:52,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 21:45:52,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:52,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712731981] [2020-09-24 21:45:52,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:52,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:52,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486338084] [2020-09-24 21:45:52,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:52,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:52,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:52,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:52,920 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-24 21:45:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:55,058 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-24 21:45:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:45:55,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-24 21:45:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:55,067 INFO L225 Difference]: With dead ends: 1574 [2020-09-24 21:45:55,067 INFO L226 Difference]: Without dead ends: 894 [2020-09-24 21:45:55,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-24 21:45:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-24 21:45:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-24 21:45:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-24 21:45:55,143 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 151 [2020-09-24 21:45:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:55,146 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-24 21:45:55,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-24 21:45:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 21:45:55,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:55,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:55,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:55,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:55,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-24 21:45:55,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:55,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243335847] [2020-09-24 21:45:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:59,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 21:45:59,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4408 [2020-09-24 21:45:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:59,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:59,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:45:59,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:00,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:00,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:00,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 21:46:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:00,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243335847] [2020-09-24 21:46:00,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:00,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:46:00,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008140193] [2020-09-24 21:46:00,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:46:00,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:46:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:00,285 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 12 states. [2020-09-24 21:46:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:04,451 INFO L93 Difference]: Finished difference Result 2688 states and 3933 transitions. [2020-09-24 21:46:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:46:04,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-09-24 21:46:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:04,469 INFO L225 Difference]: With dead ends: 2688 [2020-09-24 21:46:04,470 INFO L226 Difference]: Without dead ends: 1959 [2020-09-24 21:46:04,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:46:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-09-24 21:46:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1396. [2020-09-24 21:46:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2020-09-24 21:46:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1940 transitions. [2020-09-24 21:46:04,588 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1940 transitions. Word has length 157 [2020-09-24 21:46:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:04,589 INFO L479 AbstractCegarLoop]: Abstraction has 1396 states and 1940 transitions. [2020-09-24 21:46:04,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:46:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1940 transitions. [2020-09-24 21:46:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 21:46:04,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:04,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:04,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:04,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:04,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-24 21:46:04,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:04,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169394506] [2020-09-24 21:46:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:09,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 21:46:09,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:46:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:46:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 21:46:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:09,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:09,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:46:09,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:09,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 21:46:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 21:46:10,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:10,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:46:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:10,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169394506] [2020-09-24 21:46:10,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:10,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:10,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8213414] [2020-09-24 21:46:10,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:10,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:10,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:10,182 INFO L87 Difference]: Start difference. First operand 1396 states and 1940 transitions. Second operand 7 states. [2020-09-24 21:46:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:12,691 INFO L93 Difference]: Finished difference Result 3628 states and 5325 transitions. [2020-09-24 21:46:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:46:12,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-24 21:46:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:12,709 INFO L225 Difference]: With dead ends: 3628 [2020-09-24 21:46:12,709 INFO L226 Difference]: Without dead ends: 2247 [2020-09-24 21:46:12,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2020-09-24 21:46:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1875. [2020-09-24 21:46:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-09-24 21:46:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2498 transitions. [2020-09-24 21:46:12,796 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2498 transitions. Word has length 190 [2020-09-24 21:46:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:12,799 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2498 transitions. [2020-09-24 21:46:12,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2498 transitions. [2020-09-24 21:46:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 21:46:12,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:12,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:12,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:12,806 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1649911016, now seen corresponding path program 1 times [2020-09-24 21:46:12,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:12,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45885524] [2020-09-24 21:46:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-24 21:46:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:46:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 21:46:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:17,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:18,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:46:18,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:18,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 21:46:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:18,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 21:46:18,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:46:18,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45885524] [2020-09-24 21:46:18,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:18,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:18,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876919708] [2020-09-24 21:46:18,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:18,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:18,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:18,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:18,542 INFO L87 Difference]: Start difference. First operand 1875 states and 2498 transitions. Second operand 8 states. [2020-09-24 21:46:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:20,704 INFO L93 Difference]: Finished difference Result 4283 states and 6072 transitions. [2020-09-24 21:46:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:20,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-09-24 21:46:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:20,720 INFO L225 Difference]: With dead ends: 4283 [2020-09-24 21:46:20,720 INFO L226 Difference]: Without dead ends: 2573 [2020-09-24 21:46:20,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2020-09-24 21:46:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2207. [2020-09-24 21:46:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2020-09-24 21:46:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2873 transitions. [2020-09-24 21:46:20,814 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2873 transitions. Word has length 230 [2020-09-24 21:46:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:20,815 INFO L479 AbstractCegarLoop]: Abstraction has 2207 states and 2873 transitions. [2020-09-24 21:46:20,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2873 transitions. [2020-09-24 21:46:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 21:46:20,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:20,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:20,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:20,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash 706836333, now seen corresponding path program 1 times [2020-09-24 21:46:20,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:20,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288870161] [2020-09-24 21:46:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 21:46:25,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:46:25,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:46:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-24 21:46:25,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:26,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:26,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:46:26,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:26,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:26,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 21:46:26,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking...