/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:26:01,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:26:01,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:26:01,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:26:01,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:26:01,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:26:01,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:26:01,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:26:01,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:26:01,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:26:01,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:26:01,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:26:01,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:26:01,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:26:01,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:26:01,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:26:01,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:26:01,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:26:01,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:26:01,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:26:01,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:26:01,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:26:01,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:26:01,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:26:01,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:26:01,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:26:01,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:26:01,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:26:01,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:26:01,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:26:01,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:26:01,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:26:01,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:26:01,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:26:01,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:26:01,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:26:01,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:26:01,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:26:01,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:26:01,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:26:01,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:26:01,265 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 21:26:01,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:26:01,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:26:01,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:26:01,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:26:01,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:26:01,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:26:01,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:26:01,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:26:01,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:26:01,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:26:01,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:26:01,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:26:01,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:26:01,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:26:01,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:26:01,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:26:01,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:26:01,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:26:01,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:26:01,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:26:01,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:26:01,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:26:01,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:26:01,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:26:01,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:26:01,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:26:01,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:26:01,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:26:01,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:26:01,293 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 21:26:01,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:26:01,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:26:01,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:26:01,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:26:01,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:26:01,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17.c [2020-10-14 21:26:01,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c40dcd5/b19a743fad93431fa03af3a1a4aa1554/FLAGd146223e0 [2020-10-14 21:26:02,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:26:02,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label17.c [2020-10-14 21:26:02,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c40dcd5/b19a743fad93431fa03af3a1a4aa1554/FLAGd146223e0 [2020-10-14 21:26:02,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c40dcd5/b19a743fad93431fa03af3a1a4aa1554 [2020-10-14 21:26:02,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:26:02,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:26:02,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:02,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:26:02,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:26:02,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef001ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02, skipping insertion in model container [2020-10-14 21:26:02,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:26:02,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:26:04,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:04,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:26:05,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:05,236 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:26:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05 WrapperNode [2020-10-14 21:26:05,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:05,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:26:05,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:26:05,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:26:05,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (1/1) ... [2020-10-14 21:26:05,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:26:05,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:26:05,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:26:05,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:26:05,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (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 21:26:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:26:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:26:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:26:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:26:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:26:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:26:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:26:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:26:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:26:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:26:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:26:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:26:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:26:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:26:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:26:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:26:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:26:16,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:26:16,521 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:26:16,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:16 BoogieIcfgContainer [2020-10-14 21:26:16,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:26:16,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:26:16,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:26:16,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:26:16,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:26:02" (1/3) ... [2020-10-14 21:26:16,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643c99dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:16, skipping insertion in model container [2020-10-14 21:26:16,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:05" (2/3) ... [2020-10-14 21:26:16,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643c99dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:16, skipping insertion in model container [2020-10-14 21:26:16,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:16" (3/3) ... [2020-10-14 21:26:16,557 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label17.c [2020-10-14 21:26:16,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:26:16,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:26:16,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:26:16,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:26:16,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:26:16,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:26:16,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:26:16,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:26:16,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:26:16,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:26:16,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:26:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:26:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 21:26:16,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:16,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:26:16,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:16,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1992287976, now seen corresponding path program 1 times [2020-10-14 21:26:16,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:16,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025669298] [2020-10-14 21:26:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:17,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:17,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 21:26:17,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:17,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-14 21:26:17,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:17,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 21:26:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:26:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:17,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 21:26:17,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:17,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:17,601 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 21:26:17,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025669298] [2020-10-14 21:26:17,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:17,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:26:17,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660848910] [2020-10-14 21:26:17,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:26:17,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:17,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:26:17,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:26:17,628 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:26:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:31,586 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 21:26:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:26:31,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 21:26:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:31,623 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 21:26:31,623 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 21:26:31,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:26:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 21:26:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 21:26:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 21:26:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 21:26:31,803 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 39 [2020-10-14 21:26:31,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:31,804 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 21:26:31,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:26:31,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 21:26:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 21:26:31,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:31,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:31,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:26:31,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:31,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:31,816 INFO L82 PathProgramCache]: Analyzing trace with hash 77433821, now seen corresponding path program 1 times [2020-10-14 21:26:31,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:31,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892842100] [2020-10-14 21:26:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:26:33,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:26:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-14 21:26:33,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:33,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:26:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:26:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:33,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:33,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:33,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:33,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:26:33,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:33,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:33,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:26:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 21:26:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:34,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:26:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:34,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892842100] [2020-10-14 21:26:34,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:34,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:34,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855050889] [2020-10-14 21:26:34,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:34,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:34,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:34,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:34,153 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 7 states. [2020-10-14 21:26:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:58,810 INFO L93 Difference]: Finished difference Result 5852 states and 9670 transitions. [2020-10-14 21:26:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:26:58,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-14 21:26:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:58,839 INFO L225 Difference]: With dead ends: 5852 [2020-10-14 21:26:58,839 INFO L226 Difference]: Without dead ends: 3849 [2020-10-14 21:26:58,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:26:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-10-14 21:26:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3761. [2020-10-14 21:26:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3761 states. [2020-10-14 21:26:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 5629 transitions. [2020-10-14 21:26:58,974 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 5629 transitions. Word has length 114 [2020-10-14 21:26:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:58,977 INFO L479 AbstractCegarLoop]: Abstraction has 3761 states and 5629 transitions. [2020-10-14 21:26:58,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 5629 transitions. [2020-10-14 21:26:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 21:26:58,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:58,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:58,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:26:58,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:58,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1395679865, now seen corresponding path program 1 times [2020-10-14 21:26:58,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:58,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457177251] [2020-10-14 21:26:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:00,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:00,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:27:00,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-14 21:27:00,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:00,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:00,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:27:00,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:27:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:00,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:00,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:00,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:00,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:27:00,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:00,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:00,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:00,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:27:00,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 21:27:00,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:00,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:27:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:27:00,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457177251] [2020-10-14 21:27:00,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:27:00,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:27:00,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336924843] [2020-10-14 21:27:00,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:00,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:00,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:00,410 INFO L87 Difference]: Start difference. First operand 3761 states and 5629 transitions. Second operand 7 states. [2020-10-14 21:27:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:25,112 INFO L93 Difference]: Finished difference Result 11315 states and 17463 transitions. [2020-10-14 21:27:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:27:25,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-14 21:27:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:25,152 INFO L225 Difference]: With dead ends: 11315 [2020-10-14 21:27:25,153 INFO L226 Difference]: Without dead ends: 7560 [2020-10-14 21:27:25,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2020-10-14 21:27:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 7337. [2020-10-14 21:27:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7337 states. [2020-10-14 21:27:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7337 states to 7337 states and 10762 transitions. [2020-10-14 21:27:25,370 INFO L78 Accepts]: Start accepts. Automaton has 7337 states and 10762 transitions. Word has length 128 [2020-10-14 21:27:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:25,377 INFO L479 AbstractCegarLoop]: Abstraction has 7337 states and 10762 transitions. [2020-10-14 21:27:25,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 7337 states and 10762 transitions. [2020-10-14 21:27:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 21:27:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:25,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:27:25,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:27:25,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:25,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:25,381 INFO L82 PathProgramCache]: Analyzing trace with hash 421047581, now seen corresponding path program 1 times [2020-10-14 21:27:25,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:25,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250343186] [2020-10-14 21:27:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:27:26,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-14 21:27:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:27:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:27:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:26,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:26,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:27:26,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:27:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 21:27:26,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:27:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:27:26,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250343186] [2020-10-14 21:27:26,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:27:26,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:27:26,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585812620] [2020-10-14 21:27:26,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:26,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:26,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:26,785 INFO L87 Difference]: Start difference. First operand 7337 states and 10762 transitions. Second operand 7 states. [2020-10-14 21:27:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:48,471 INFO L93 Difference]: Finished difference Result 22013 states and 33706 transitions. [2020-10-14 21:27:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:27:48,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-14 21:27:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:48,557 INFO L225 Difference]: With dead ends: 22013 [2020-10-14 21:27:48,558 INFO L226 Difference]: Without dead ends: 14682 [2020-10-14 21:27:48,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:27:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14682 states. [2020-10-14 21:27:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14682 to 14461. [2020-10-14 21:27:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14461 states. [2020-10-14 21:27:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14461 states to 14461 states and 19807 transitions. [2020-10-14 21:27:48,970 INFO L78 Accepts]: Start accepts. Automaton has 14461 states and 19807 transitions. Word has length 146 [2020-10-14 21:27:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:48,971 INFO L479 AbstractCegarLoop]: Abstraction has 14461 states and 19807 transitions. [2020-10-14 21:27:48,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14461 states and 19807 transitions. [2020-10-14 21:27:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 21:27:48,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:48,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:27:48,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:27:48,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1341616038, now seen corresponding path program 1 times [2020-10-14 21:27:48,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:48,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374931900] [2020-10-14 21:27:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:50,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 21:27:50,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:27:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-14 21:27:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:50,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:27:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 21:27:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:50,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:50,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:27:50,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:50,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:50,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:50,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:50,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:50,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 21:27:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 21:27:51,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:51,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:27:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:27:51,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374931900] [2020-10-14 21:27:51,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:51,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:27:51,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728983648] [2020-10-14 21:27:51,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:27:51,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:51,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:27:51,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:27:51,104 INFO L87 Difference]: Start difference. First operand 14461 states and 19807 transitions. Second operand 6 states. [2020-10-14 21:28:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:11,896 INFO L93 Difference]: Finished difference Result 41871 states and 59672 transitions. [2020-10-14 21:28:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:28:11,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-14 21:28:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:12,018 INFO L225 Difference]: With dead ends: 41871 [2020-10-14 21:28:12,018 INFO L226 Difference]: Without dead ends: 27416 [2020-10-14 21:28:12,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:28:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27416 states. [2020-10-14 21:28:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27416 to 27262. [2020-10-14 21:28:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27262 states. [2020-10-14 21:28:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27262 states to 27262 states and 37453 transitions. [2020-10-14 21:28:12,846 INFO L78 Accepts]: Start accepts. Automaton has 27262 states and 37453 transitions. Word has length 157 [2020-10-14 21:28:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:12,847 INFO L479 AbstractCegarLoop]: Abstraction has 27262 states and 37453 transitions. [2020-10-14 21:28:12,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:28:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 27262 states and 37453 transitions. [2020-10-14 21:28:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 21:28:12,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:12,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:28:12,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:28:12,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash 84717100, now seen corresponding path program 1 times [2020-10-14 21:28:12,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:12,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817078204] [2020-10-14 21:28:12,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:17,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:17,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 21:28:17,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:28:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 21:28:17,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:17,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:28:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:28:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:18,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:18,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:28:18,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:18,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:18,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:28:18,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 21:28:18,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:18,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:28:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:18,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 21:28:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:18,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:18,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:28:18,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 21:28:18,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:18,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:18,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:28:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 21:28:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:28:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 64 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:28:18,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817078204] [2020-10-14 21:28:18,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:18,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:28:18,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365239690] [2020-10-14 21:28:18,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:28:18,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:28:18,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:28:18,795 INFO L87 Difference]: Start difference. First operand 27262 states and 37453 transitions. Second operand 7 states. [2020-10-14 21:28:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:48,963 INFO L93 Difference]: Finished difference Result 49179 states and 69041 transitions. [2020-10-14 21:28:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:28:48,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 21:28:48,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:49,213 INFO L225 Difference]: With dead ends: 49179 [2020-10-14 21:28:49,215 INFO L226 Difference]: Without dead ends: 27673 [2020-10-14 21:28:49,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:28:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27673 states. [2020-10-14 21:28:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27673 to 27488. [2020-10-14 21:28:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27488 states. [2020-10-14 21:28:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27488 states to 27488 states and 37893 transitions. [2020-10-14 21:28:49,861 INFO L78 Accepts]: Start accepts. Automaton has 27488 states and 37893 transitions. Word has length 248 [2020-10-14 21:28:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:49,861 INFO L479 AbstractCegarLoop]: Abstraction has 27488 states and 37893 transitions. [2020-10-14 21:28:49,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:28:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27488 states and 37893 transitions. [2020-10-14 21:28:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 21:28:49,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:49,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:28:49,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:28:49,868 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1917969891, now seen corresponding path program 1 times [2020-10-14 21:28:49,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:49,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372914686] [2020-10-14 21:28:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 21:28:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:28:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 21:28:54,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:54,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:28:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 21:28:54,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:28:55,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:55,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:55,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:55,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:28:55,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 21:28:55,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:55,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:28:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:28:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:28:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 21:28:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:55,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:55,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:28:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:28:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:28:56,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372914686] [2020-10-14 21:28:56,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:56,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:28:56,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224011440] [2020-10-14 21:28:56,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:28:56,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:56,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:28:56,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:28:56,158 INFO L87 Difference]: Start difference. First operand 27488 states and 37893 transitions. Second operand 8 states. [2020-10-14 21:29:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:29,674 INFO L93 Difference]: Finished difference Result 86375 states and 131529 transitions. [2020-10-14 21:29:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:29:29,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-10-14 21:29:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:29,896 INFO L225 Difference]: With dead ends: 86375 [2020-10-14 21:29:29,896 INFO L226 Difference]: Without dead ends: 59696 [2020-10-14 21:29:29,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:29:30,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59696 states. [2020-10-14 21:29:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59696 to 57834. [2020-10-14 21:29:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57834 states. [2020-10-14 21:29:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57834 states to 57834 states and 78479 transitions. [2020-10-14 21:29:31,222 INFO L78 Accepts]: Start accepts. Automaton has 57834 states and 78479 transitions. Word has length 258 [2020-10-14 21:29:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:31,223 INFO L479 AbstractCegarLoop]: Abstraction has 57834 states and 78479 transitions. [2020-10-14 21:29:31,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:29:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 57834 states and 78479 transitions. [2020-10-14 21:29:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 21:29:31,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:31,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:29:31,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:29:31,229 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:31,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1174779529, now seen corresponding path program 1 times [2020-10-14 21:29:31,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:31,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953967297] [2020-10-14 21:29:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:31,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 21:29:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:29:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-14 21:29:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:33,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:29:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 21:29:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:33,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:33,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:33,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:33,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:29:33,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:33,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:33,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:29:33,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:29:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 21:29:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:34,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:29:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:29:34,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:29:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:29:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 21:29:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:34,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:29:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:29:34,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953967297] [2020-10-14 21:29:34,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:34,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:29:34,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973310880] [2020-10-14 21:29:34,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:34,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:34,605 INFO L87 Difference]: Start difference. First operand 57834 states and 78479 transitions. Second operand 7 states.