/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=0.1 --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/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:32,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:32,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:32,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:32,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:32,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:33,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:33,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:33,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:33,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:33,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:33,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:33,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:33,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:33,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:33,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:33,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:33,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:33,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:33,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:33,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:33,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:33,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:33,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:33,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:33,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:33,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:33,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:33,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:33,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:33,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:33,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:33,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:33,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:33,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:33,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:33,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:33,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:33,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:33,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:33,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:33,059 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 10:10:33,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:33,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:33,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:33,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:33,110 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:33,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:33,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:33,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:33,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:33,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:33,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:33,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:33,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:33,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:33,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:33,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:33,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:33,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:33,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:33,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:33,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:33,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:33,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:33,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:33,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:33,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:33,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:33,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:33,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:33,117 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:10:33,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:33,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:33,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:33,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:33,566 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:33,567 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 10:10:33,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c35bfa6/a638b029dde94c019755bc571accb063/FLAGd2d599a95 [2020-09-25 10:10:34,335 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:34,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 10:10:34,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c35bfa6/a638b029dde94c019755bc571accb063/FLAGd2d599a95 [2020-09-25 10:10:34,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c35bfa6/a638b029dde94c019755bc571accb063 [2020-09-25 10:10:34,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:34,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:34,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:34,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:34,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:34,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:34" (1/1) ... [2020-09-25 10:10:34,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58419e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:34, skipping insertion in model container [2020-09-25 10:10:34,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:34" (1/1) ... [2020-09-25 10:10:34,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:34,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:35,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:35,273 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:35,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:35,471 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:35,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35 WrapperNode [2020-09-25 10:10:35,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:35,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:35,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:35,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:35,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (1/1) ... [2020-09-25 10:10:35,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:35,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:35,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:35,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:35,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (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 10:10:35,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:37,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:37,155 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:37,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:37 BoogieIcfgContainer [2020-09-25 10:10:37,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:37,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:37,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:37,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:37,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:34" (1/3) ... [2020-09-25 10:10:37,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0714c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:37, skipping insertion in model container [2020-09-25 10:10:37,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:35" (2/3) ... [2020-09-25 10:10:37,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0714c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:37, skipping insertion in model container [2020-09-25 10:10:37,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:37" (3/3) ... [2020-09-25 10:10:37,177 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 10:10:37,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:37,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:37,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:37,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:37,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:37,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:37,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:37,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:37,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:37,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:37,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 10:10:37,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:37,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:37,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:37,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 10:10:37,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:37,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685998623] [2020-09-25 10:10:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:42,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:10:42,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 10:10:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:42,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:10:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:42,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:10:42,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:42,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:42,995 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 10:10:42,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685998623] [2020-09-25 10:10:42,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:42,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:42,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26975784] [2020-09-25 10:10:43,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:43,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:43,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:43,028 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:45,421 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:10:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:45,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 10:10:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:45,450 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:10:45,450 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:10:45,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:10:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:10:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:10:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:10:45,599 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 10:10:45,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:45,600 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:10:45,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:10:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 10:10:45,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:45,619 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:45,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:45,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:45,621 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 10:10:45,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:45,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147835597] [2020-09-25 10:10:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:50,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 10:10:50,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:10:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:10:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:50,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 10:10:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:50,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:50,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:10:50,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:50,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:10:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 10:10:51,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:51,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147835597] [2020-09-25 10:10:51,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:51,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:51,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454477284] [2020-09-25 10:10:51,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:51,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:51,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:51,141 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 10:10:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:53,353 INFO L93 Difference]: Finished difference Result 1785 states and 2268 transitions. [2020-09-25 10:10:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:53,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-09-25 10:10:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:53,365 INFO L225 Difference]: With dead ends: 1785 [2020-09-25 10:10:53,365 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 10:10:53,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 10:10:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1042. [2020-09-25 10:10:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 10:10:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1291 transitions. [2020-09-25 10:10:53,432 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1291 transitions. Word has length 182 [2020-09-25 10:10:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:53,433 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1291 transitions. [2020-09-25 10:10:53,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1291 transitions. [2020-09-25 10:10:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 10:10:53,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:53,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:53,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:53,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:53,441 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 10:10:53,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:53,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176442617] [2020-09-25 10:10:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 10:10:58,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:10:58,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 10:10:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 10:10:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:58,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:10:58,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:10:58,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:10:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:58,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176442617] [2020-09-25 10:10:58,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:58,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:58,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318637702] [2020-09-25 10:10:58,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:58,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:58,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:58,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:58,801 INFO L87 Difference]: Start difference. First operand 1042 states and 1291 transitions. Second operand 5 states. [2020-09-25 10:11:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:00,883 INFO L93 Difference]: Finished difference Result 2696 states and 3513 transitions. [2020-09-25 10:11:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:11:00,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 10:11:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:00,908 INFO L225 Difference]: With dead ends: 2696 [2020-09-25 10:11:00,908 INFO L226 Difference]: Without dead ends: 1676 [2020-09-25 10:11:00,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:00,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2020-09-25 10:11:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1656. [2020-09-25 10:11:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-09-25 10:11:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2034 transitions. [2020-09-25 10:11:00,988 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2034 transitions. Word has length 198 [2020-09-25 10:11:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:00,989 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 2034 transitions. [2020-09-25 10:11:00,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:11:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2034 transitions. [2020-09-25 10:11:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 10:11:01,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:01,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:01,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:01,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-25 10:11:01,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:01,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992225312] [2020-09-25 10:11:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:06,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 10:11:06,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:06,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:06,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 10:11:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:11:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:06,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:06,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:06,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:11:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:06,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 10:11:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:06,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992225312] [2020-09-25 10:11:06,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:06,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:11:06,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708093883] [2020-09-25 10:11:06,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:11:06,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:06,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:11:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:11:06,566 INFO L87 Difference]: Start difference. First operand 1656 states and 2034 transitions. Second operand 9 states. [2020-09-25 10:11:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:10,897 INFO L93 Difference]: Finished difference Result 4753 states and 6230 transitions. [2020-09-25 10:11:10,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:10,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2020-09-25 10:11:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:10,918 INFO L225 Difference]: With dead ends: 4753 [2020-09-25 10:11:10,918 INFO L226 Difference]: Without dead ends: 3026 [2020-09-25 10:11:10,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2020-09-25 10:11:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2942. [2020-09-25 10:11:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2942 states. [2020-09-25 10:11:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 3578 transitions. [2020-09-25 10:11:11,027 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 3578 transitions. Word has length 202 [2020-09-25 10:11:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:11,028 INFO L479 AbstractCegarLoop]: Abstraction has 2942 states and 3578 transitions. [2020-09-25 10:11:11,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:11:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 3578 transitions. [2020-09-25 10:11:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 10:11:11,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:11,040 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:11,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:11,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 10:11:11,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:11,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885863406] [2020-09-25 10:11:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4353 [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:11:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 10:11:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:15,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:15,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:11:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:15,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:15,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:11:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:11:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:11:15,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:11:15,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885863406] [2020-09-25 10:11:15,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:15,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:11:15,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092871263] [2020-09-25 10:11:15,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:15,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:15,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:15,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:15,725 INFO L87 Difference]: Start difference. First operand 2942 states and 3578 transitions. Second operand 7 states. [2020-09-25 10:11:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:17,117 INFO L93 Difference]: Finished difference Result 5909 states and 7372 transitions. [2020-09-25 10:11:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:11:17,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 10:11:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:17,135 INFO L225 Difference]: With dead ends: 5909 [2020-09-25 10:11:17,135 INFO L226 Difference]: Without dead ends: 2989 [2020-09-25 10:11:17,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:11:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-09-25 10:11:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2869. [2020-09-25 10:11:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2020-09-25 10:11:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3491 transitions. [2020-09-25 10:11:17,230 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3491 transitions. Word has length 226 [2020-09-25 10:11:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:17,230 INFO L479 AbstractCegarLoop]: Abstraction has 2869 states and 3491 transitions. [2020-09-25 10:11:17,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3491 transitions. [2020-09-25 10:11:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 10:11:17,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:17,242 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:17,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:17,243 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:17,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1087080743, now seen corresponding path program 1 times [2020-09-25 10:11:17,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:17,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86863802] [2020-09-25 10:11:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 10:11:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:11:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:11:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-25 10:11:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:11:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:23,081 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-09-25 10:11:23,380 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 50 [2020-09-25 10:11:23,625 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-09-25 10:11:23,924 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2020-09-25 10:11:24,222 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49