/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:24,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:24,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:24,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:24,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:24,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:24,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:24,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:24,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:24,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:24,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:24,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:24,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:24,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:24,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:24,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:24,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:24,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:24,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:24,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:24,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:24,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:24,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:24,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:24,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:24,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:24,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:24,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:24,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:24,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:24,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:24,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:24,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:24,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:24,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:24,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:24,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:24,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:24,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:24,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:24,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:24,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:44:24,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:24,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:24,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:24,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:24,304 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:24,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:24,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:24,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:24,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:24,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:24,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:24,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:24,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:24,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:24,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:24,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:24,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:24,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:24,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:24,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:24,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:24,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:24,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:24,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:24,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:24,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:24,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:24,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:24,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:24,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:24,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:24,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:24,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:24,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:24,818 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:24,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-24 21:44:24,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a266626/f2954ce6090a44f98e89ed32204b80e5/FLAG68621db96 [2020-09-24 21:44:25,555 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:25,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-24 21:44:25,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a266626/f2954ce6090a44f98e89ed32204b80e5/FLAG68621db96 [2020-09-24 21:44:25,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a266626/f2954ce6090a44f98e89ed32204b80e5 [2020-09-24 21:44:25,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:25,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:25,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:25,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:25,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:25,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:25" (1/1) ... [2020-09-24 21:44:25,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:25, skipping insertion in model container [2020-09-24 21:44:25,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:25" (1/1) ... [2020-09-24 21:44:25,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:25,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:26,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:26,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:26,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:26,599 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:26,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26 WrapperNode [2020-09-24 21:44:26,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:26,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:26,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:26,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:26,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:26,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:26,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:26,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:26,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:28,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:28,358 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:28,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:28 BoogieIcfgContainer [2020-09-24 21:44:28,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:28,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:28,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:28,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:28,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:25" (1/3) ... [2020-09-24 21:44:28,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:28, skipping insertion in model container [2020-09-24 21:44:28,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26" (2/3) ... [2020-09-24 21:44:28,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:28, skipping insertion in model container [2020-09-24 21:44:28,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:28" (3/3) ... [2020-09-24 21:44:28,380 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-24 21:44:28,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:28,409 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:28,436 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:28,476 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:28,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:28,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:28,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:28,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:28,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:28,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:28,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 21:44:28,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:28,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:28,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:28,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-24 21:44:28,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:28,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-24 21:44:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 21:44:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-24 21:44:29,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 21:44:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:29,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:29,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:29,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:44:29,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:29,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-24 21:44:29,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:29,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:44:29,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715056591] [2020-09-24 21:44:29,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:44:29,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:44:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:29,752 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:44:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:32,737 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-24 21:44:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:44:32,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-24 21:44:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:32,784 INFO L225 Difference]: With dead ends: 1352 [2020-09-24 21:44:32,785 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 21:44:32,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 21:44:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-24 21:44:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-24 21:44:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-24 21:44:32,922 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-24 21:44:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:32,923 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-24 21:44:32,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:44:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-24 21:44:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 21:44:32,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:32,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:32,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:32,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:32,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-24 21:44:32,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:32,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889157606] [2020-09-24 21:44:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:38,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 21:44:38,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:44:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 21:44:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-24 21:44:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:38,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:38,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:38,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:44:38,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:38,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:44:38,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-24 21:44:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:44:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:38,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889157606] [2020-09-24 21:44:38,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:38,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:38,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651106515] [2020-09-24 21:44:38,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:38,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:38,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:38,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:38,950 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 9 states. [2020-09-24 21:44:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:42,052 INFO L93 Difference]: Finished difference Result 1804 states and 2293 transitions. [2020-09-24 21:44:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:42,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-09-24 21:44:42,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:42,061 INFO L225 Difference]: With dead ends: 1804 [2020-09-24 21:44:42,061 INFO L226 Difference]: Without dead ends: 1092 [2020-09-24 21:44:42,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:44:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2020-09-24 21:44:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 878. [2020-09-24 21:44:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-24 21:44:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1102 transitions. [2020-09-24 21:44:42,110 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1102 transitions. Word has length 154 [2020-09-24 21:44:42,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:42,111 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1102 transitions. [2020-09-24 21:44:42,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1102 transitions. [2020-09-24 21:44:42,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-24 21:44:42,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:42,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:44:42,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:42,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1172462050, now seen corresponding path program 1 times [2020-09-24 21:44:42,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:42,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306593132] [2020-09-24 21:44:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-24 21:44:47,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:44:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:44:47,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:44:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:44:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:44:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:47,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:44:47,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:47,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 21:44:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:44:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:47,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:48,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:44:48,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-09-24 21:44:48,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:44:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:44:48,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306593132] [2020-09-24 21:44:48,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:48,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:48,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642319627] [2020-09-24 21:44:48,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:48,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:48,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:48,394 INFO L87 Difference]: Start difference. First operand 878 states and 1102 transitions. Second operand 9 states. [2020-09-24 21:44:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:51,218 INFO L93 Difference]: Finished difference Result 2115 states and 2771 transitions. [2020-09-24 21:44:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:44:51,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 279 [2020-09-24 21:44:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:51,228 INFO L225 Difference]: With dead ends: 2115 [2020-09-24 21:44:51,229 INFO L226 Difference]: Without dead ends: 1378 [2020-09-24 21:44:51,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-09-24 21:44:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1334. [2020-09-24 21:44:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-09-24 21:44:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1646 transitions. [2020-09-24 21:44:51,276 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1646 transitions. Word has length 279 [2020-09-24 21:44:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:51,276 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1646 transitions. [2020-09-24 21:44:51,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1646 transitions. [2020-09-24 21:44:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-24 21:44:51,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:51,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:51,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:51,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:51,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1855443398, now seen corresponding path program 1 times [2020-09-24 21:44:51,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:51,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846588821] [2020-09-24 21:44:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-09-24 21:44:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:44:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 21:44:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:44:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:44:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:56,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:56,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:44:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:56,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:56,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:44:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-24 21:44:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:44:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:44:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:44:57,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 21:44:57,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:44:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 129 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:44:57,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846588821] [2020-09-24 21:44:57,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:57,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:44:57,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933279255] [2020-09-24 21:44:57,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:44:57,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:57,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:44:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:57,740 INFO L87 Difference]: Start difference. First operand 1334 states and 1646 transitions. Second operand 13 states. [2020-09-24 21:45:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:01,131 INFO L93 Difference]: Finished difference Result 2631 states and 3339 transitions. [2020-09-24 21:45:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:45:01,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 295 [2020-09-24 21:45:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:01,142 INFO L225 Difference]: With dead ends: 2631 [2020-09-24 21:45:01,143 INFO L226 Difference]: Without dead ends: 1429 [2020-09-24 21:45:01,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:45:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-09-24 21:45:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1358. [2020-09-24 21:45:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-09-24 21:45:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1677 transitions. [2020-09-24 21:45:01,207 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1677 transitions. Word has length 295 [2020-09-24 21:45:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:01,208 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 1677 transitions. [2020-09-24 21:45:01,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1677 transitions. [2020-09-24 21:45:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-09-24 21:45:01,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:01,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:01,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:01,216 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash -581688192, now seen corresponding path program 1 times [2020-09-24 21:45:01,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:01,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98868908] [2020-09-24 21:45:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-09-24 21:45:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:45:06,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 21:45:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:06,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:06,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:06,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:45:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 21:45:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 21:45:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 21:45:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:06,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 21:45:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:45:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 21:45:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:45:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:45:06,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98868908] [2020-09-24 21:45:06,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:06,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:45:06,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864948950] [2020-09-24 21:45:06,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:06,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:06,854 INFO L87 Difference]: Start difference. First operand 1358 states and 1677 transitions. Second operand 7 states. [2020-09-24 21:45:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:08,985 INFO L93 Difference]: Finished difference Result 3072 states and 4041 transitions. [2020-09-24 21:45:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:08,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-09-24 21:45:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:09,000 INFO L225 Difference]: With dead ends: 3072 [2020-09-24 21:45:09,000 INFO L226 Difference]: Without dead ends: 1889 [2020-09-24 21:45:09,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-24 21:45:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1823. [2020-09-24 21:45:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-24 21:45:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2258 transitions. [2020-09-24 21:45:09,070 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2258 transitions. Word has length 311 [2020-09-24 21:45:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:09,071 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2258 transitions. [2020-09-24 21:45:09,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2258 transitions. [2020-09-24 21:45:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-09-24 21:45:09,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:09,082 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:09,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:09,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1350116225, now seen corresponding path program 1 times [2020-09-24 21:45:09,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:09,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969629650] [2020-09-24 21:45:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking...