/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/Problem13_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:22:25,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:22:25,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:22:25,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:22:25,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:22:25,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:22:25,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:22:25,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:22:25,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:22:25,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:22:25,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:22:25,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:22:25,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:22:25,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:22:25,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:22:25,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:22:25,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:22:25,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:22:25,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:22:25,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:22:25,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:22:25,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:22:25,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:22:25,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:22:25,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:22:25,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:22:25,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:22:25,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:22:25,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:22:25,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:22:25,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:22:25,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:22:25,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:22:25,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:22:25,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:22:25,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:22:25,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:22:25,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:22:25,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:22:25,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:22:25,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:22:25,223 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 21:22:25,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:22:25,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:22:25,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:22:25,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:22:25,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:22:25,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:22:25,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:22:25,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:22:25,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:22:25,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:22:25,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:22:25,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:22:25,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:22:25,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:22:25,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:22:25,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:22:25,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:22:25,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:22:25,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:22:25,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:22:25,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:22:25,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:22:25,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:22:25,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:22:25,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:22:25,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:22:25,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:22:25,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:22:25,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:22:25,287 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 21:22:25,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:22:25,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:22:25,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:22:25,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:22:25,711 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:22:25,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2020-10-14 21:22:25,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e0c83d41/42ac5247170f410c9ba2783eb9713803/FLAG1a35933ee [2020-10-14 21:22:26,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:22:26,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2020-10-14 21:22:26,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e0c83d41/42ac5247170f410c9ba2783eb9713803/FLAG1a35933ee [2020-10-14 21:22:27,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e0c83d41/42ac5247170f410c9ba2783eb9713803 [2020-10-14 21:22:27,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:22:27,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:22:27,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:22:27,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:22:27,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:22:27,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:27" (1/1) ... [2020-10-14 21:22:27,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd452c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:27, skipping insertion in model container [2020-10-14 21:22:27,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:27" (1/1) ... [2020-10-14 21:22:27,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:22:27,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:22:29,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:22:29,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:22:30,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:22:30,081 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:22:30,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30 WrapperNode [2020-10-14 21:22:30,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:22:30,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:22:30,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:22:30,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:22:30,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... [2020-10-14 21:22:30,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:22:30,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:22:30,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:22:30,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:22:30,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:22:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:22:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:22:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:22:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:22:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:22:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:22:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:22:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:22:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:22:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:22:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:22:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:22:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:22:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:22:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:22:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:22:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:22:40,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:22:40,330 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:22:40,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:40 BoogieIcfgContainer [2020-10-14 21:22:40,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:22:40,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:22:40,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:22:40,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:22:40,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:22:27" (1/3) ... [2020-10-14 21:22:40,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c7534d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:40, skipping insertion in model container [2020-10-14 21:22:40,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:30" (2/3) ... [2020-10-14 21:22:40,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c7534d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:40, skipping insertion in model container [2020-10-14 21:22:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:40" (3/3) ... [2020-10-14 21:22:40,372 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2020-10-14 21:22:40,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:22:40,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:22:40,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:22:40,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:22:40,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:22:40,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:22:40,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:22:40,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:22:40,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:22:40,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:22:40,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:22:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:22:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 21:22:40,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:40,539 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] [2020-10-14 21:22:40,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:40,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1124378712, now seen corresponding path program 1 times [2020-10-14 21:22:40,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:40,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406837875] [2020-10-14 21:22:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:41,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:41,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 21:22:41,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 21:22:41,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:41,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 21:22:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:22:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:41,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:22:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:41,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:41,559 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 21:22:41,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406837875] [2020-10-14 21:22:41,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:41,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:22:41,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393801105] [2020-10-14 21:22:41,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:22:41,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:22:41,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:22:41,594 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:22:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:59,761 INFO L93 Difference]: Finished difference Result 3242 states and 5947 transitions. [2020-10-14 21:22:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:22:59,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 21:22:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:59,796 INFO L225 Difference]: With dead ends: 3242 [2020-10-14 21:22:59,796 INFO L226 Difference]: Without dead ends: 2044 [2020-10-14 21:22:59,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:22:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-10-14 21:22:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1987. [2020-10-14 21:22:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-14 21:22:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 3532 transitions. [2020-10-14 21:22:59,969 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 3532 transitions. Word has length 27 [2020-10-14 21:22:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:59,970 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 3532 transitions. [2020-10-14 21:22:59,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:22:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 3532 transitions. [2020-10-14 21:22:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 21:22:59,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:59,975 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:22:59,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:22:59,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:59,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2049609055, now seen corresponding path program 1 times [2020-10-14 21:22:59,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:59,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100271230] [2020-10-14 21:22:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:01,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:01,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:23:01,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:23:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-14 21:23:01,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:01,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:23:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:23:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:01,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:01,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:01,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:23:01,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:01,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:01,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:01,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:01,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:23:01,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 21:23:01,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:01,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:23:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:01,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100271230] [2020-10-14 21:23:01,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:01,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:01,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819008928] [2020-10-14 21:23:01,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:01,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:01,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:01,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:01,826 INFO L87 Difference]: Start difference. First operand 1987 states and 3532 transitions. Second operand 7 states. [2020-10-14 21:23:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:25,160 INFO L93 Difference]: Finished difference Result 5893 states and 10562 transitions. [2020-10-14 21:23:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:23:25,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-14 21:23:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:25,189 INFO L225 Difference]: With dead ends: 5893 [2020-10-14 21:23:25,189 INFO L226 Difference]: Without dead ends: 3912 [2020-10-14 21:23:25,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:23:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2020-10-14 21:23:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3821. [2020-10-14 21:23:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3821 states. [2020-10-14 21:23:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 6194 transitions. [2020-10-14 21:23:25,331 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 6194 transitions. Word has length 96 [2020-10-14 21:23:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:25,332 INFO L479 AbstractCegarLoop]: Abstraction has 3821 states and 6194 transitions. [2020-10-14 21:23:25,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 6194 transitions. [2020-10-14 21:23:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 21:23:25,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:25,343 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:23:25,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:23:25,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:25,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1897601325, now seen corresponding path program 1 times [2020-10-14 21:23:25,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:25,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152064306] [2020-10-14 21:23:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:23:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-14 21:23:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:26,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:23:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:26,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:26,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:23:26,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:26,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:26,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:26,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:23:26,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:23:26,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:26,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:23:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:26,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152064306] [2020-10-14 21:23:26,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:26,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:26,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294251617] [2020-10-14 21:23:26,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:26,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:26,709 INFO L87 Difference]: Start difference. First operand 3821 states and 6194 transitions. Second operand 7 states. [2020-10-14 21:23:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:46,667 INFO L93 Difference]: Finished difference Result 11221 states and 18457 transitions. [2020-10-14 21:23:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:23:46,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-14 21:23:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:46,712 INFO L225 Difference]: With dead ends: 11221 [2020-10-14 21:23:46,712 INFO L226 Difference]: Without dead ends: 7406 [2020-10-14 21:23:46,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:23:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7406 states. [2020-10-14 21:23:46,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7406 to 7218. [2020-10-14 21:23:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7218 states. [2020-10-14 21:23:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 10255 transitions. [2020-10-14 21:23:46,943 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 10255 transitions. Word has length 102 [2020-10-14 21:23:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:46,949 INFO L479 AbstractCegarLoop]: Abstraction has 7218 states and 10255 transitions. [2020-10-14 21:23:46,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 10255 transitions. [2020-10-14 21:23:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 21:23:46,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:46,952 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:23:46,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:23:46,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 480636393, now seen corresponding path program 1 times [2020-10-14 21:23:46,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:46,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793797300] [2020-10-14 21:23:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:47,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 21:23:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-14 21:23:47,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:47,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:23:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:47,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:47,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:23:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:47,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:48,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:23:48,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 21:23:48,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:48,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:23:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:48,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793797300] [2020-10-14 21:23:48,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:48,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042326762] [2020-10-14 21:23:48,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:48,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:48,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:48,330 INFO L87 Difference]: Start difference. First operand 7218 states and 10255 transitions. Second operand 7 states. [2020-10-14 21:24:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:13,554 INFO L93 Difference]: Finished difference Result 15627 states and 22119 transitions. [2020-10-14 21:24:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:24:13,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-14 21:24:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:13,600 INFO L225 Difference]: With dead ends: 15627 [2020-10-14 21:24:13,600 INFO L226 Difference]: Without dead ends: 8415 [2020-10-14 21:24:13,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:24:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8415 states. [2020-10-14 21:24:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8415 to 8147. [2020-10-14 21:24:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8147 states. [2020-10-14 21:24:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 11356 transitions. [2020-10-14 21:24:13,902 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 11356 transitions. Word has length 132 [2020-10-14 21:24:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:13,904 INFO L479 AbstractCegarLoop]: Abstraction has 8147 states and 11356 transitions. [2020-10-14 21:24:13,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 11356 transitions. [2020-10-14 21:24:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 21:24:13,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:13,908 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:24:13,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:24:13,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 908484605, now seen corresponding path program 1 times [2020-10-14 21:24:13,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:13,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123401415] [2020-10-14 21:24:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:15,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 21:24:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-14 21:24:15,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:15,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:24:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:24:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:15,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:15,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:15,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:15,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:15,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:24:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:15,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:15,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:15,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:24:15,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 21:24:15,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:15,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:24:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:24:15,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123401415] [2020-10-14 21:24:15,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:24:15,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:24:15,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556038888] [2020-10-14 21:24:15,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:15,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:15,996 INFO L87 Difference]: Start difference. First operand 8147 states and 11356 transitions. Second operand 7 states. [2020-10-14 21:24:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:40,114 INFO L93 Difference]: Finished difference Result 16658 states and 23258 transitions. [2020-10-14 21:24:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:24:40,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-14 21:24:40,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:40,176 INFO L225 Difference]: With dead ends: 16658 [2020-10-14 21:24:40,177 INFO L226 Difference]: Without dead ends: 8517 [2020-10-14 21:24:40,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:24:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2020-10-14 21:24:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8132. [2020-10-14 21:24:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8132 states. [2020-10-14 21:24:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 11263 transitions. [2020-10-14 21:24:40,445 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 11263 transitions. Word has length 142 [2020-10-14 21:24:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:40,446 INFO L479 AbstractCegarLoop]: Abstraction has 8132 states and 11263 transitions. [2020-10-14 21:24:40,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 11263 transitions. [2020-10-14 21:24:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 21:24:40,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:40,450 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:24:40,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:24:40,450 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:40,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:40,451 INFO L82 PathProgramCache]: Analyzing trace with hash -909650208, now seen corresponding path program 1 times [2020-10-14 21:24:40,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:40,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733038898] [2020-10-14 21:24:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:24:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-14 21:24:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:24:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:24:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:41,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:41,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:24:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:41,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:41,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:41,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:24:41,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 21:24:41,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:41,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:24:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:24:41,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733038898] [2020-10-14 21:24:41,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:41,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:24:41,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131334538] [2020-10-14 21:24:41,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:24:41,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:24:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:24:41,954 INFO L87 Difference]: Start difference. First operand 8132 states and 11263 transitions. Second operand 5 states. [2020-10-14 21:25:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:04,381 INFO L93 Difference]: Finished difference Result 20605 states and 30130 transitions. [2020-10-14 21:25:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:25:04,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 21:25:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:04,432 INFO L225 Difference]: With dead ends: 20605 [2020-10-14 21:25:04,433 INFO L226 Difference]: Without dead ends: 13282 [2020-10-14 21:25:04,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 21:25:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13282 states. [2020-10-14 21:25:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13282 to 13219. [2020-10-14 21:25:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13219 states. [2020-10-14 21:25:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 17399 transitions. [2020-10-14 21:25:04,765 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 17399 transitions. Word has length 156 [2020-10-14 21:25:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:04,766 INFO L479 AbstractCegarLoop]: Abstraction has 13219 states and 17399 transitions. [2020-10-14 21:25:04,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:25:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 17399 transitions. [2020-10-14 21:25:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 21:25:04,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:04,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:25:04,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:25:04,773 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:04,773 INFO L82 PathProgramCache]: Analyzing trace with hash 392058779, now seen corresponding path program 1 times [2020-10-14 21:25:04,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:04,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490398156] [2020-10-14 21:25:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:05,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:08,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:08,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 21:25:08,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:25:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3648 [2020-10-14 21:25:08,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:08,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:25:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:25:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 21:25:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:08,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:08,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:08,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:08,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:25:08,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:08,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:09,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:09,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:25:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 21:25:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:09,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:25:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:25:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:09,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:25:09,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 21:25:09,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:09,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:25:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:25:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:25:09,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490398156] [2020-10-14 21:25:09,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:09,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:25:09,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383239061] [2020-10-14 21:25:09,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:25:09,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:09,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:25:09,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:25:09,584 INFO L87 Difference]: Start difference. First operand 13219 states and 17399 transitions. Second operand 7 states. [2020-10-14 21:25:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:42,906 INFO L93 Difference]: Finished difference Result 35482 states and 50052 transitions. [2020-10-14 21:25:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:25:42,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 21:25:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:43,024 INFO L225 Difference]: With dead ends: 35482 [2020-10-14 21:25:43,025 INFO L226 Difference]: Without dead ends: 23072 [2020-10-14 21:25:43,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:25:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23072 states. [2020-10-14 21:25:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23072 to 22858. [2020-10-14 21:25:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22858 states. [2020-10-14 21:25:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22858 states to 22858 states and 29724 transitions. [2020-10-14 21:25:43,759 INFO L78 Accepts]: Start accepts. Automaton has 22858 states and 29724 transitions. Word has length 232 [2020-10-14 21:25:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:43,760 INFO L479 AbstractCegarLoop]: Abstraction has 22858 states and 29724 transitions. [2020-10-14 21:25:43,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:25:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 22858 states and 29724 transitions. [2020-10-14 21:25:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 21:25:43,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:43,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:25:43,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:25:43,767 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1872106204, now seen corresponding path program 1 times [2020-10-14 21:25:43,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:43,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740848248] [2020-10-14 21:25:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:46,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 21:25:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:25:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-10-14 21:25:46,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:46,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:46,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:25:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 21:25:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:25:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:46,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:46,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:25:46,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:46,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:46,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:46,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:46,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:25:46,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 21:25:46,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:46,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:25:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:25:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:47,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:47,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:25:47,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:25:47,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:47,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:25:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 21:25:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:25:47,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740848248] [2020-10-14 21:25:47,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:47,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:25:47,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561929576] [2020-10-14 21:25:47,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:25:47,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:47,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:25:47,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:25:47,283 INFO L87 Difference]: Start difference. First operand 22858 states and 29724 transitions. Second operand 6 states. [2020-10-14 21:26:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:15,792 INFO L93 Difference]: Finished difference Result 37529 states and 50032 transitions. [2020-10-14 21:26:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:26:15,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2020-10-14 21:26:15,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:15,870 INFO L225 Difference]: With dead ends: 37529 [2020-10-14 21:26:15,871 INFO L226 Difference]: Without dead ends: 22892 [2020-10-14 21:26:15,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22892 states. [2020-10-14 21:26:16,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22892 to 22841. [2020-10-14 21:26:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22841 states. [2020-10-14 21:26:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22841 states to 22841 states and 29691 transitions. [2020-10-14 21:26:16,405 INFO L78 Accepts]: Start accepts. Automaton has 22841 states and 29691 transitions. Word has length 246 [2020-10-14 21:26:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:16,406 INFO L479 AbstractCegarLoop]: Abstraction has 22841 states and 29691 transitions. [2020-10-14 21:26:16,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:26:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 22841 states and 29691 transitions. [2020-10-14 21:26:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 21:26:16,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:16,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:26:16,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:26:16,411 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1656798873, now seen corresponding path program 1 times [2020-10-14 21:26:16,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:16,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298789882] [2020-10-14 21:26:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:16,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:19,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:19,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 21:26:19,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:26:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2561 [2020-10-14 21:26:19,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:19,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:26:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 21:26:19,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:19,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:26:19,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:19,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:19,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:19,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:19,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:26:19,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 21:26:19,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:19,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:26:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:26:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:19,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:19,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:20,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:26:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 21:26:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:20,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:26:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:26:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 32 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:26:20,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298789882] [2020-10-14 21:26:20,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:26:20,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:26:20,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077838238] [2020-10-14 21:26:20,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:20,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:20,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:20,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:20,156 INFO L87 Difference]: Start difference. First operand 22841 states and 29691 transitions. Second operand 7 states.