/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=0.4 --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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:45,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:45,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:45,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:45,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:45,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:45,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:45,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:45,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:45,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:45,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:45,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:45,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:45,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:45,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:45,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:45,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:45,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:45,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:45,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:45,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:45,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:45,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:45,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:45,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:45,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:45,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:45,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:45,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:45,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:45,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:45,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:45,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:45,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:45,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:45,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:45,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:45,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:45,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:45,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:45,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:45,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:34:45,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:45,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:45,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:45,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:45,289 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:45,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:45,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:45,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:45,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:45,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:45,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:45,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:45,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:45,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:45,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:45,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:45,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:45,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:45,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:45,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:45,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:45,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:45,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:45,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:45,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:45,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:45,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:45,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:45,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:45,294 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:34:45,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:45,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:45,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:45,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:45,789 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:45,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 13:34:45,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/909a94782/0789915b09dd4e51b82a9fec9b751d6d/FLAG9285f39de [2020-09-25 13:34:46,546 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:46,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 13:34:46,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/909a94782/0789915b09dd4e51b82a9fec9b751d6d/FLAG9285f39de [2020-09-25 13:34:46,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/909a94782/0789915b09dd4e51b82a9fec9b751d6d [2020-09-25 13:34:46,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:46,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:46,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:46,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:46,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:46,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:46" (1/1) ... [2020-09-25 13:34:46,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb7b15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:46, skipping insertion in model container [2020-09-25 13:34:46,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:46" (1/1) ... [2020-09-25 13:34:46,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:46,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:47,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:47,467 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:47,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:47,638 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:47,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47 WrapperNode [2020-09-25 13:34:47,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:47,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:47,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:47,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:47,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (1/1) ... [2020-09-25 13:34:47,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:47,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:47,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:47,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:47,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (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 13:34:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:49,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:49,361 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:49,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:49 BoogieIcfgContainer [2020-09-25 13:34:49,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:49,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:49,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:49,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:49,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:46" (1/3) ... [2020-09-25 13:34:49,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6560cede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:49, skipping insertion in model container [2020-09-25 13:34:49,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:47" (2/3) ... [2020-09-25 13:34:49,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6560cede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:49, skipping insertion in model container [2020-09-25 13:34:49,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:49" (3/3) ... [2020-09-25 13:34:49,381 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 13:34:49,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:49,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:49,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:49,464 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:49,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:49,465 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:49,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:49,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:49,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:49,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:49,466 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 13:34:49,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:49,513 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] [2020-09-25 13:34:49,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 13:34:49,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:49,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748077294] [2020-09-25 13:34:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:50,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:34:50,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1255 [2020-09-25 13:34:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:50,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:34:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:34:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:51,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:51,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:34:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:51,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:51,264 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 13:34:51,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748077294] [2020-09-25 13:34:51,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:51,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:34:51,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48502327] [2020-09-25 13:34:51,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:51,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:51,298 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 13:34:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:54,161 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 13:34:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:34:54,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 13:34:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:54,190 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 13:34:54,190 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 13:34:54,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 13:34:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 13:34:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:34:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 13:34:54,316 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 73 [2020-09-25 13:34:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:54,317 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 13:34:54,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 13:34:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 13:34:54,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:54,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:54,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:54,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:54,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 13:34:54,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:54,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197001127] [2020-09-25 13:34:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:59,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 13:34:59,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:34:59,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:59,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:34:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:59,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:59,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:34:59,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:59,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:59,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:59,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 13:34:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:59,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:59,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197001127] [2020-09-25 13:34:59,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:59,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:59,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105586688] [2020-09-25 13:34:59,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:59,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:59,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:59,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:59,901 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 13:35:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:03,181 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 13:35:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:03,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 13:35:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:03,198 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 13:35:03,199 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 13:35:03,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 13:35:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1517. [2020-09-25 13:35:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-09-25 13:35:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2050 transitions. [2020-09-25 13:35:03,285 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2050 transitions. Word has length 162 [2020-09-25 13:35:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:03,286 INFO L479 AbstractCegarLoop]: Abstraction has 1517 states and 2050 transitions. [2020-09-25 13:35:03,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2050 transitions. [2020-09-25 13:35:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:35:03,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:03,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:03,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:03,298 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash -594506206, now seen corresponding path program 1 times [2020-09-25 13:35:03,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:03,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328126809] [2020-09-25 13:35:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:35:08,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:35:08,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:35:08,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:08,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:08,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:35:08,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 13:35:08,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:35:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:08,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328126809] [2020-09-25 13:35:08,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:08,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:08,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754718293] [2020-09-25 13:35:08,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:08,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:08,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:08,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:08,787 INFO L87 Difference]: Start difference. First operand 1517 states and 2050 transitions. Second operand 7 states. [2020-09-25 13:35:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:11,157 INFO L93 Difference]: Finished difference Result 3729 states and 5158 transitions. [2020-09-25 13:35:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:35:11,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 13:35:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:11,177 INFO L225 Difference]: With dead ends: 3729 [2020-09-25 13:35:11,177 INFO L226 Difference]: Without dead ends: 2227 [2020-09-25 13:35:11,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-25 13:35:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2018. [2020-09-25 13:35:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2018 states. [2020-09-25 13:35:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2751 transitions. [2020-09-25 13:35:11,291 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2751 transitions. Word has length 165 [2020-09-25 13:35:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:11,292 INFO L479 AbstractCegarLoop]: Abstraction has 2018 states and 2751 transitions. [2020-09-25 13:35:11,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2751 transitions. [2020-09-25 13:35:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 13:35:11,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:11,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:35:11,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:11,298 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:11,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1651977394, now seen corresponding path program 1 times [2020-09-25 13:35:11,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:11,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416254951] [2020-09-25 13:35:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:16,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:16,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 13:35:16,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:35:16,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:16,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:35:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:16,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:16,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:16,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:35:16,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:16,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:16,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:16,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:35:16,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 13:35:16,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:16,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:35:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:16,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416254951] [2020-09-25 13:35:16,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:16,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:35:16,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182551033] [2020-09-25 13:35:16,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:16,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:16,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:16,789 INFO L87 Difference]: Start difference. First operand 2018 states and 2751 transitions. Second operand 8 states. [2020-09-25 13:35:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:19,710 INFO L93 Difference]: Finished difference Result 5641 states and 8126 transitions. [2020-09-25 13:35:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:35:19,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 13:35:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:19,735 INFO L225 Difference]: With dead ends: 5641 [2020-09-25 13:35:19,736 INFO L226 Difference]: Without dead ends: 3788 [2020-09-25 13:35:19,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:35:19,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-09-25 13:35:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3576. [2020-09-25 13:35:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3576 states. [2020-09-25 13:35:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 4805 transitions. [2020-09-25 13:35:19,888 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 4805 transitions. Word has length 181 [2020-09-25 13:35:19,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:19,889 INFO L479 AbstractCegarLoop]: Abstraction has 3576 states and 4805 transitions. [2020-09-25 13:35:19,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 4805 transitions. [2020-09-25 13:35:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 13:35:19,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:19,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:35:19,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:19,898 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:19,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1477622191, now seen corresponding path program 1 times [2020-09-25 13:35:19,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:19,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33744061] [2020-09-25 13:35:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 13:35:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:35:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:24,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:25,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 13:35:25,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:25,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:25,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 13:35:25,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:25,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33744061] [2020-09-25 13:35:25,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:25,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:25,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603948790] [2020-09-25 13:35:25,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:25,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:25,714 INFO L87 Difference]: Start difference. First operand 3576 states and 4805 transitions. Second operand 10 states. [2020-09-25 13:35:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:30,032 INFO L93 Difference]: Finished difference Result 9155 states and 13613 transitions. [2020-09-25 13:35:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:35:30,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 241 [2020-09-25 13:35:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:30,081 INFO L225 Difference]: With dead ends: 9155 [2020-09-25 13:35:30,081 INFO L226 Difference]: Without dead ends: 5744 [2020-09-25 13:35:30,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:35:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2020-09-25 13:35:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4726. [2020-09-25 13:35:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4726 states. [2020-09-25 13:35:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 6344 transitions. [2020-09-25 13:35:30,354 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 6344 transitions. Word has length 241 [2020-09-25 13:35:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:30,355 INFO L479 AbstractCegarLoop]: Abstraction has 4726 states and 6344 transitions. [2020-09-25 13:35:30,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:35:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 6344 transitions. [2020-09-25 13:35:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 13:35:30,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:30,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:35:30,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:30,364 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 13:35:30,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:30,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982028795] [2020-09-25 13:35:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking...