/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:07:59,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:07:59,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:07:59,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:07:59,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:07:59,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:07:59,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:07:59,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:07:59,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:07:59,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:07:59,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:07:59,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:07:59,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:07:59,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:07:59,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:07:59,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:07:59,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:07:59,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:07:59,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:07:59,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:07:59,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:07:59,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:07:59,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:07:59,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:07:59,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:07:59,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:07:59,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:07:59,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:07:59,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:07:59,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:07:59,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:07:59,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:07:59,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:07:59,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:07:59,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:07:59,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:07:59,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:07:59,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:07:59,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:07:59,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:07:59,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:07:59,308 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 03:07:59,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:07:59,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:07:59,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:07:59,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:07:59,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:07:59,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:07:59,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:07:59,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:07:59,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:07:59,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:07:59,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:07:59,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:07:59,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:07:59,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:07:59,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:07:59,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:07:59,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:07:59,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:07:59,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:07:59,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:07:59,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:07:59,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:07:59,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:07:59,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:07:59,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:07:59,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:07:59,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:07:59,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:07:59,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:07:59,386 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:07:59,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:07:59,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:07:59,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:07:59,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:07:59,765 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:07:59,766 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40.c [2020-10-14 03:07:59,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75265339d/0fd5425bf4dc4ed2a24014e105fdc08a/FLAGfa39c3111 [2020-10-14 03:08:00,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:08:00,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label40.c [2020-10-14 03:08:00,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75265339d/0fd5425bf4dc4ed2a24014e105fdc08a/FLAGfa39c3111 [2020-10-14 03:08:01,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75265339d/0fd5425bf4dc4ed2a24014e105fdc08a [2020-10-14 03:08:01,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:08:01,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:08:01,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:08:01,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:08:01,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:08:01,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:08:01" (1/1) ... [2020-10-14 03:08:01,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:01, skipping insertion in model container [2020-10-14 03:08:01,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:08:01" (1/1) ... [2020-10-14 03:08:01,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:08:01,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:08:03,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:08:03,647 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:08:04,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:08:04,684 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:08:04,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04 WrapperNode [2020-10-14 03:08:04,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:08:04,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:08:04,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:08:04,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:08:04,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:04,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:04,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:04,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:04,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:05,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:05,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (1/1) ... [2020-10-14 03:08:05,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:08:05,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:08:05,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:08:05,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:08:05,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (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 03:08:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:08:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:08:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:08:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:08:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:08:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:08:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:08:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:08:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:08:05,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:08:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:08:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:08:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:08:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:08:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:08:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:08:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:08:18,486 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:08:18,487 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:08:18,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:08:18 BoogieIcfgContainer [2020-10-14 03:08:18,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:08:18,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:08:18,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:08:18,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:08:18,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:08:01" (1/3) ... [2020-10-14 03:08:18,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229adc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:08:18, skipping insertion in model container [2020-10-14 03:08:18,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:04" (2/3) ... [2020-10-14 03:08:18,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229adc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:08:18, skipping insertion in model container [2020-10-14 03:08:18,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:08:18" (3/3) ... [2020-10-14 03:08:18,516 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label40.c [2020-10-14 03:08:18,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:08:18,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:08:18,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:08:18,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:08:18,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:08:18,597 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:08:18,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:08:18,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:08:18,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:08:18,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:08:18,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:08:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:08:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 03:08:18,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:08:18,655 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] [2020-10-14 03:08:18,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:08:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:08:18,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1856929193, now seen corresponding path program 1 times [2020-10-14 03:08:18,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:08:18,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692932975] [2020-10-14 03:08:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:08:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:19,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 03:08:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-14 03:08:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:19,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:08:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:08:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 03:08:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:08:19,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:19,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:08:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:19,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:08:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:19,408 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 03:08:19,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692932975] [2020-10-14 03:08:19,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:08:19,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:08:19,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710261755] [2020-10-14 03:08:19,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:08:19,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:08:19,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:08:19,444 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:08:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:08:36,286 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 03:08:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:08:36,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-14 03:08:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:08:36,327 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 03:08:36,327 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 03:08:36,341 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 03:08:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 03:08:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 03:08:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 03:08:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 03:08:36,527 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 34 [2020-10-14 03:08:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:08:36,527 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 03:08:36,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:08:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 03:08:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 03:08:36,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:08:36,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:36,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:08:36,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:08:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:08:36,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1973461197, now seen corresponding path program 1 times [2020-10-14 03:08:36,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:08:36,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971219484] [2020-10-14 03:08:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:08:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:37,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 03:08:37,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:08:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-14 03:08:37,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:37,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:08:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 03:08:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:08:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:08:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:08:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:08:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:08:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:38,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:38,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:08:38,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:08:38,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:38,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:08:38,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:08:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:08:38,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971219484] [2020-10-14 03:08:38,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:08:38,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:08:38,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466692190] [2020-10-14 03:08:38,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:08:38,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:38,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:08:38,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:08:38,211 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 5 states. [2020-10-14 03:08:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:08:57,070 INFO L93 Difference]: Finished difference Result 5710 states and 9480 transitions. [2020-10-14 03:08:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:08:57,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 03:08:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:08:57,095 INFO L225 Difference]: With dead ends: 5710 [2020-10-14 03:08:57,096 INFO L226 Difference]: Without dead ends: 3707 [2020-10-14 03:08:57,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:08:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2020-10-14 03:08:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3673. [2020-10-14 03:08:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3673 states. [2020-10-14 03:08:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5313 transitions. [2020-10-14 03:08:57,213 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5313 transitions. Word has length 109 [2020-10-14 03:08:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:08:57,214 INFO L479 AbstractCegarLoop]: Abstraction has 3673 states and 5313 transitions. [2020-10-14 03:08:57,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:08:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5313 transitions. [2020-10-14 03:08:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 03:08:57,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:08:57,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:57,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:08:57,220 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:08:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:08:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash 881383759, now seen corresponding path program 1 times [2020-10-14 03:08:57,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:08:57,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223594981] [2020-10-14 03:08:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:08:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 03:08:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:08:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-14 03:08:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:58,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:08:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:08:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:58,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:08:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:08:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:08:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:08:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:08:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:08:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:08:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:08:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:08:58,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223594981] [2020-10-14 03:08:58,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:08:58,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:08:58,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742500382] [2020-10-14 03:08:58,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:08:58,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:58,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:08:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:08:58,872 INFO L87 Difference]: Start difference. First operand 3673 states and 5313 transitions. Second operand 5 states. [2020-10-14 03:09:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:17,543 INFO L93 Difference]: Finished difference Result 10742 states and 15800 transitions. [2020-10-14 03:09:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:17,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-14 03:09:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:17,581 INFO L225 Difference]: With dead ends: 10742 [2020-10-14 03:09:17,582 INFO L226 Difference]: Without dead ends: 7075 [2020-10-14 03:09:17,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 03:09:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7075 states. [2020-10-14 03:09:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7075 to 7000. [2020-10-14 03:09:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7000 states. [2020-10-14 03:09:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 9886 transitions. [2020-10-14 03:09:17,801 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 9886 transitions. Word has length 116 [2020-10-14 03:09:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:17,806 INFO L479 AbstractCegarLoop]: Abstraction has 7000 states and 9886 transitions. [2020-10-14 03:09:17,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:09:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 9886 transitions. [2020-10-14 03:09:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 03:09:17,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:17,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:17,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:09:17,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1787047489, now seen corresponding path program 1 times [2020-10-14 03:09:17,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:17,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444021989] [2020-10-14 03:09:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:18,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:18,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 03:09:18,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:09:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-14 03:09:18,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:18,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 03:09:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 03:09:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:18,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:18,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:18,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:18,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:09:18,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:18,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:18,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:18,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:18,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:09:18,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:09:18,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:18,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:09:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:18,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444021989] [2020-10-14 03:09:18,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:18,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:18,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485108069] [2020-10-14 03:09:18,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:18,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:18,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:18,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:18,770 INFO L87 Difference]: Start difference. First operand 7000 states and 9886 transitions. Second operand 5 states. [2020-10-14 03:09:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:46,566 INFO L93 Difference]: Finished difference Result 17354 states and 25046 transitions. [2020-10-14 03:09:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:46,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-14 03:09:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:46,622 INFO L225 Difference]: With dead ends: 17354 [2020-10-14 03:09:46,622 INFO L226 Difference]: Without dead ends: 10360 [2020-10-14 03:09:46,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:09:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10360 states. [2020-10-14 03:09:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10360 to 10286. [2020-10-14 03:09:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10286 states. [2020-10-14 03:09:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10286 states to 10286 states and 14203 transitions. [2020-10-14 03:09:46,917 INFO L78 Accepts]: Start accepts. Automaton has 10286 states and 14203 transitions. Word has length 135 [2020-10-14 03:09:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:46,919 INFO L479 AbstractCegarLoop]: Abstraction has 10286 states and 14203 transitions. [2020-10-14 03:09:46,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:09:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 10286 states and 14203 transitions. [2020-10-14 03:09:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 03:09:46,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:46,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:46,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:09:46,926 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:46,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1768094604, now seen corresponding path program 1 times [2020-10-14 03:09:46,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:46,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879747004] [2020-10-14 03:09:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:09:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:09:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-14 03:09:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:48,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:09:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 03:09:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:48,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:48,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:48,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:09:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:48,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:48,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:48,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 03:09:48,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:48,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 03:09:48,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:48,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:09:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 03:09:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:48,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879747004] [2020-10-14 03:09:48,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:48,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:48,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870278599] [2020-10-14 03:09:48,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:48,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:48,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:48,412 INFO L87 Difference]: Start difference. First operand 10286 states and 14203 transitions. Second operand 5 states. [2020-10-14 03:10:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:14,029 INFO L93 Difference]: Finished difference Result 30328 states and 43035 transitions. [2020-10-14 03:10:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:14,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 03:10:14,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:14,099 INFO L225 Difference]: With dead ends: 30328 [2020-10-14 03:10:14,100 INFO L226 Difference]: Without dead ends: 20048 [2020-10-14 03:10:14,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 03:10:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20048 states. [2020-10-14 03:10:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20048 to 20040. [2020-10-14 03:10:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20040 states. [2020-10-14 03:10:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20040 states to 20040 states and 25727 transitions. [2020-10-14 03:10:14,614 INFO L78 Accepts]: Start accepts. Automaton has 20040 states and 25727 transitions. Word has length 152 [2020-10-14 03:10:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:14,614 INFO L479 AbstractCegarLoop]: Abstraction has 20040 states and 25727 transitions. [2020-10-14 03:10:14,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 20040 states and 25727 transitions. [2020-10-14 03:10:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 03:10:14,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:14,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:14,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:10:14,624 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:14,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1242743712, now seen corresponding path program 1 times [2020-10-14 03:10:14,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:14,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465962787] [2020-10-14 03:10:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:16,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 03:10:16,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:10:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-10-14 03:10:16,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:16,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-14 03:10:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 03:10:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:16,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:10:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:16,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:16,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:16,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:10:16,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 03:10:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:16,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:10:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:16,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465962787] [2020-10-14 03:10:16,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:16,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:10:16,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554151370] [2020-10-14 03:10:16,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:16,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:16,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:16,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:16,833 INFO L87 Difference]: Start difference. First operand 20040 states and 25727 transitions. Second operand 5 states. [2020-10-14 03:10:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:44,275 INFO L93 Difference]: Finished difference Result 48195 states and 64311 transitions. [2020-10-14 03:10:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:44,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 03:10:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:44,430 INFO L225 Difference]: With dead ends: 48195 [2020-10-14 03:10:44,430 INFO L226 Difference]: Without dead ends: 28161 [2020-10-14 03:10:44,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:10:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28161 states. [2020-10-14 03:10:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28161 to 28154. [2020-10-14 03:10:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28154 states. [2020-10-14 03:10:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28154 states to 28154 states and 35520 transitions. [2020-10-14 03:10:45,338 INFO L78 Accepts]: Start accepts. Automaton has 28154 states and 35520 transitions. Word has length 170 [2020-10-14 03:10:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:45,339 INFO L479 AbstractCegarLoop]: Abstraction has 28154 states and 35520 transitions. [2020-10-14 03:10:45,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 28154 states and 35520 transitions. [2020-10-14 03:10:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 03:10:45,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:45,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:45,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:10:45,349 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:45,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1170357154, now seen corresponding path program 1 times [2020-10-14 03:10:45,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:45,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729257769] [2020-10-14 03:10:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:45,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:47,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 03:10:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:10:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1986 [2020-10-14 03:10:47,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:47,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:10:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 03:10:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:10:47,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:47,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:10:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:47,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:47,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:10:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:10:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 03:10:47,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:47,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 03:10:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:10:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:47,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729257769] [2020-10-14 03:10:47,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:10:47,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:10:47,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5827220] [2020-10-14 03:10:47,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:10:47,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:10:47,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:10:47,917 INFO L87 Difference]: Start difference. First operand 28154 states and 35520 transitions. Second operand 6 states. [2020-10-14 03:11:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:10,824 INFO L93 Difference]: Finished difference Result 56291 states and 71211 transitions. [2020-10-14 03:11:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:10,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-14 03:11:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:10,930 INFO L225 Difference]: With dead ends: 56291 [2020-10-14 03:11:10,931 INFO L226 Difference]: Without dead ends: 28143 [2020-10-14 03:11:10,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 03:11:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28143 states. [2020-10-14 03:11:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28143 to 28137. [2020-10-14 03:11:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28137 states. [2020-10-14 03:11:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28137 states to 28137 states and 35471 transitions. [2020-10-14 03:11:11,536 INFO L78 Accepts]: Start accepts. Automaton has 28137 states and 35471 transitions. Word has length 170 [2020-10-14 03:11:11,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:11,537 INFO L479 AbstractCegarLoop]: Abstraction has 28137 states and 35471 transitions. [2020-10-14 03:11:11,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:11:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 28137 states and 35471 transitions. [2020-10-14 03:11:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 03:11:11,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:11,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:11,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:11:11,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:11,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2023738878, now seen corresponding path program 1 times [2020-10-14 03:11:11,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:11,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441711288] [2020-10-14 03:11:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:12,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 03:11:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:11:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-14 03:11:12,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:12,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 03:11:12,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 03:11:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:13,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:13,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:13,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:11:13,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:13,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 03:11:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:11:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:13,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 03:11:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:13,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441711288] [2020-10-14 03:11:13,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:13,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:13,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210031767] [2020-10-14 03:11:13,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:13,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:13,500 INFO L87 Difference]: Start difference. First operand 28137 states and 35471 transitions. Second operand 5 states. [2020-10-14 03:11:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:52,905 INFO L93 Difference]: Finished difference Result 82226 states and 106814 transitions. [2020-10-14 03:11:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:52,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 03:11:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:53,113 INFO L225 Difference]: With dead ends: 82226 [2020-10-14 03:11:53,113 INFO L226 Difference]: Without dead ends: 54095 [2020-10-14 03:11:53,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:11:53,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54095 states. [2020-10-14 03:11:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54095 to 54087. [2020-10-14 03:11:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54087 states. [2020-10-14 03:11:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54087 states to 54087 states and 67154 transitions. [2020-10-14 03:11:54,415 INFO L78 Accepts]: Start accepts. Automaton has 54087 states and 67154 transitions. Word has length 173 [2020-10-14 03:11:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:54,415 INFO L479 AbstractCegarLoop]: Abstraction has 54087 states and 67154 transitions. [2020-10-14 03:11:54,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 54087 states and 67154 transitions. [2020-10-14 03:11:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 03:11:54,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:54,426 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:11:54,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:11:54,426 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1731493340, now seen corresponding path program 1 times [2020-10-14 03:11:54,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:54,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077554146] [2020-10-14 03:11:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking...