/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:41,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:41,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:41,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:41,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:41,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:41,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:41,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:41,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:41,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:41,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:41,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:41,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:41,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:41,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:41,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:41,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:41,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:41,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:41,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:41,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:41,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:41,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:41,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:41,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:41,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:41,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:41,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:41,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:41,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:41,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:41,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:41,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:41,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:41,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:41,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:41,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:41,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:41,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:41,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:41,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:41,342 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 [2020-09-25 11:19:41,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:41,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:41,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:41,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:41,392 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:41,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:41,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:41,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:41,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:41,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:41,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:41,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:41,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:41,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:41,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:41,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:41,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:41,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:41,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:41,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:41,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:41,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:41,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:41,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:41,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:41,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:41,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:41,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:41,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:41,398 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:41,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:41,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:41,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:41,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:41,892 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:41,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 11:19:41,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cb1bcf1f/aea4aaa42e59462fab0b089b9a6732cf/FLAG1cbc57196 [2020-09-25 11:19:42,665 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:42,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 11:19:42,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cb1bcf1f/aea4aaa42e59462fab0b089b9a6732cf/FLAG1cbc57196 [2020-09-25 11:19:42,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cb1bcf1f/aea4aaa42e59462fab0b089b9a6732cf [2020-09-25 11:19:42,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:42,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:42,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:42,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:42,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:42,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:42" (1/1) ... [2020-09-25 11:19:42,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601fc90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:42, skipping insertion in model container [2020-09-25 11:19:42,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:42" (1/1) ... [2020-09-25 11:19:42,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:42,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:43,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:43,473 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:43,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:43,759 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:43,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43 WrapperNode [2020-09-25 11:19:43,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:43,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:43,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:43,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:43,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (1/1) ... [2020-09-25 11:19:43,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:43,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:43,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:43,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:43,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (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 [2020-09-25 11:19:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:45,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:45,522 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:45,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:45 BoogieIcfgContainer [2020-09-25 11:19:45,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:45,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:45,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:45,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:45,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:42" (1/3) ... [2020-09-25 11:19:45,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9990a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:45, skipping insertion in model container [2020-09-25 11:19:45,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:43" (2/3) ... [2020-09-25 11:19:45,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9990a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:45, skipping insertion in model container [2020-09-25 11:19:45,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:45" (3/3) ... [2020-09-25 11:19:45,543 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 11:19:45,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:45,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:45,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:45,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:45,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:45,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:45,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:45,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:45,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:45,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:45,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 11:19:45,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:45,683 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] [2020-09-25 11:19:45,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:45,693 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 11:19:45,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:45,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276926026] [2020-09-25 11:19:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:46,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 11:19:46,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:46,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-09-25 11:19:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:46,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:19:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:46,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:46,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:46,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:46,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:46,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:46,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:46,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276926026] [2020-09-25 11:19:46,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:46,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358929922] [2020-09-25 11:19:46,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:46,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:46,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:46,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:46,894 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:48,977 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:19:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:48,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 11:19:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:49,004 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:19:49,005 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:19:49,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:19:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:19:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:19:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:19:49,116 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 54 [2020-09-25 11:19:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:49,117 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:19:49,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:19:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 11:19:49,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:49,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:49,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:49,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 11:19:49,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:49,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831641598] [2020-09-25 11:19:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:53,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 11:19:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4339 [2020-09-25 11:19:53,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:53,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:19:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:53,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:53,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:53,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:19:53,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:53,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 11:19:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:53,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:53,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831641598] [2020-09-25 11:19:53,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:53,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:19:53,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376931401] [2020-09-25 11:19:53,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:19:53,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:53,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:19:53,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:53,981 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 11:19:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:56,353 INFO L93 Difference]: Finished difference Result 1165 states and 1486 transitions. [2020-09-25 11:19:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:19:56,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 11:19:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:56,363 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 11:19:56,363 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 11:19:56,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 11:19:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 11:19:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 11:19:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1112 transitions. [2020-09-25 11:19:56,438 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1112 transitions. Word has length 133 [2020-09-25 11:19:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:56,439 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1112 transitions. [2020-09-25 11:19:56,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:19:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1112 transitions. [2020-09-25 11:19:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 11:19:56,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:56,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:56,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:56,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:56,447 INFO L82 PathProgramCache]: Analyzing trace with hash -412359152, now seen corresponding path program 1 times [2020-09-25 11:19:56,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:56,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097687021] [2020-09-25 11:19:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:57,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:01,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 11:20:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:20:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:01,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:20:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:01,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:20:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:01,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:02,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 11:20:02,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:02,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:20:02,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:02,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097687021] [2020-09-25 11:20:02,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:02,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:02,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505796190] [2020-09-25 11:20:02,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:02,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:02,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:02,162 INFO L87 Difference]: Start difference. First operand 851 states and 1112 transitions. Second operand 9 states. [2020-09-25 11:20:08,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:08,414 INFO L93 Difference]: Finished difference Result 2508 states and 3435 transitions. [2020-09-25 11:20:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:08,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-09-25 11:20:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:08,425 INFO L225 Difference]: With dead ends: 2508 [2020-09-25 11:20:08,426 INFO L226 Difference]: Without dead ends: 1653 [2020-09-25 11:20:08,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-09-25 11:20:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1310. [2020-09-25 11:20:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-09-25 11:20:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1646 transitions. [2020-09-25 11:20:08,485 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1646 transitions. Word has length 137 [2020-09-25 11:20:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:08,486 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1646 transitions. [2020-09-25 11:20:08,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1646 transitions. [2020-09-25 11:20:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 11:20:08,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:08,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:08,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:08,492 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash -109496539, now seen corresponding path program 1 times [2020-09-25 11:20:08,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:08,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133000428] [2020-09-25 11:20:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 11:20:11,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2677 [2020-09-25 11:20:11,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 11:20:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:20:11,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 11:20:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:11,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133000428] [2020-09-25 11:20:11,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:11,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:11,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748974484] [2020-09-25 11:20:11,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:11,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:11,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:11,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:11,611 INFO L87 Difference]: Start difference. First operand 1310 states and 1646 transitions. Second operand 8 states. [2020-09-25 11:20:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:15,660 INFO L93 Difference]: Finished difference Result 3840 states and 5140 transitions. [2020-09-25 11:20:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:15,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 11:20:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:15,677 INFO L225 Difference]: With dead ends: 3840 [2020-09-25 11:20:15,677 INFO L226 Difference]: Without dead ends: 2545 [2020-09-25 11:20:15,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2020-09-25 11:20:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2132. [2020-09-25 11:20:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2020-09-25 11:20:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2769 transitions. [2020-09-25 11:20:15,762 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2769 transitions. Word has length 143 [2020-09-25 11:20:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:15,762 INFO L479 AbstractCegarLoop]: Abstraction has 2132 states and 2769 transitions. [2020-09-25 11:20:15,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2769 transitions. [2020-09-25 11:20:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 11:20:15,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:15,769 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:15,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:15,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:15,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:15,770 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 11:20:15,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:15,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819036092] [2020-09-25 11:20:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 11:20:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:20:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:20,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:20:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-09-25 11:20:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:21,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:21,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:20:21,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:21,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:21,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:21,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:21,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 11:20:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:21,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:20:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:21,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:21,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:21,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 11:20:21,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:21,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:21,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:21,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:20:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 11:20:22,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819036092] [2020-09-25 11:20:22,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:22,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:22,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113522002] [2020-09-25 11:20:22,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:22,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:22,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:22,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:22,096 INFO L87 Difference]: Start difference. First operand 2132 states and 2769 transitions. Second operand 11 states. [2020-09-25 11:20:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:29,659 INFO L93 Difference]: Finished difference Result 7165 states and 9958 transitions. [2020-09-25 11:20:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 11:20:29,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2020-09-25 11:20:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:29,696 INFO L225 Difference]: With dead ends: 7165 [2020-09-25 11:20:29,697 INFO L226 Difference]: Without dead ends: 5048 [2020-09-25 11:20:29,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=540, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:20:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-09-25 11:20:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 3826. [2020-09-25 11:20:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3826 states. [2020-09-25 11:20:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 4973 transitions. [2020-09-25 11:20:29,857 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 4973 transitions. Word has length 222 [2020-09-25 11:20:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:29,858 INFO L479 AbstractCegarLoop]: Abstraction has 3826 states and 4973 transitions. [2020-09-25 11:20:29,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:20:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 4973 transitions. [2020-09-25 11:20:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 11:20:29,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:29,869 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:29,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:29,869 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:29,870 INFO L82 PathProgramCache]: Analyzing trace with hash 287430674, now seen corresponding path program 1 times [2020-09-25 11:20:29,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:29,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758057373] [2020-09-25 11:20:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking...