/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:16,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:16,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:16,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:16,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:16,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:16,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:16,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:16,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:16,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:16,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:16,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:16,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:16,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:16,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:16,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:16,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:16,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:16,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:16,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:16,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:16,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:16,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:16,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:16,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:16,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:16,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:16,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:16,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:16,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:16,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:16,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:16,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:16,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:16,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:16,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:16,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:16,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:16,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:16,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:16,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:16,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:20:16,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:16,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:16,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:16,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:16,384 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:16,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:16,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:16,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:16,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:16,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:16,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:16,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:16,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:16,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:16,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:16,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:16,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:16,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:16,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:16,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:16,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:16,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:16,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:16,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:16,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:16,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:16,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:16,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:16,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:16,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:20:16,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:16,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:16,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:16,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:16,877 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:16,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 11:20:16,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50865f883/4f4e7e90ef774bbf8584223105cf71ca/FLAG3fe856266 [2020-09-25 11:20:17,709 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:17,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 11:20:17,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50865f883/4f4e7e90ef774bbf8584223105cf71ca/FLAG3fe856266 [2020-09-25 11:20:17,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50865f883/4f4e7e90ef774bbf8584223105cf71ca [2020-09-25 11:20:17,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:17,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:17,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:17,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:17,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:17,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:17" (1/1) ... [2020-09-25 11:20:17,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:17, skipping insertion in model container [2020-09-25 11:20:17,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:17" (1/1) ... [2020-09-25 11:20:17,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:18,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:18,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:18,725 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:18,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:18,990 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:18,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18 WrapperNode [2020-09-25 11:20:18,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:18,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:18,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:18,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:19,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... [2020-09-25 11:20:19,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:19,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:19,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:19,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:19,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:21,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:21,626 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:21,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:21 BoogieIcfgContainer [2020-09-25 11:20:21,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:21,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:21,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:21,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:21,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:17" (1/3) ... [2020-09-25 11:20:21,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472ab7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:21, skipping insertion in model container [2020-09-25 11:20:21,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:18" (2/3) ... [2020-09-25 11:20:21,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472ab7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:21, skipping insertion in model container [2020-09-25 11:20:21,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:21" (3/3) ... [2020-09-25 11:20:21,656 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 11:20:21,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:21,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:21,709 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:21,747 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:21,748 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:21,748 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:21,748 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:21,748 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:21,748 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:21,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:21,749 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 11:20:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 11:20:21,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:21,796 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] [2020-09-25 11:20:21,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 11:20:21,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:21,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302910441] [2020-09-25 11:20:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:22,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:20:22,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-25 11:20:22,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:22,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:20:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:20:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:23,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:23,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:23,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:23,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:20:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:23,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302910441] [2020-09-25 11:20:23,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:23,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:20:23,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878082277] [2020-09-25 11:20:23,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:23,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:23,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:23,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:23,086 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 11:20:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:28,448 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-25 11:20:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:20:28,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 11:20:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:28,483 INFO L225 Difference]: With dead ends: 2361 [2020-09-25 11:20:28,483 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 11:20:28,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 11:20:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-25 11:20:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-25 11:20:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-25 11:20:28,648 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 39 [2020-09-25 11:20:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:28,649 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-25 11:20:28,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-25 11:20:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 11:20:28,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:28,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:28,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:28,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:28,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1767258319, now seen corresponding path program 1 times [2020-09-25 11:20:28,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:28,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823259950] [2020-09-25 11:20:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:32,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:20:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3487 [2020-09-25 11:20:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:32,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 11:20:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:32,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:32,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:20:32,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:32,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:20:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:32,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:20:32,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 11:20:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:32,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:20:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:32,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823259950] [2020-09-25 11:20:32,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:32,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:32,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563626483] [2020-09-25 11:20:32,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:32,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:32,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:32,809 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 7 states. [2020-09-25 11:20:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:37,669 INFO L93 Difference]: Finished difference Result 3121 states and 4257 transitions. [2020-09-25 11:20:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:20:37,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 11:20:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:37,693 INFO L225 Difference]: With dead ends: 3121 [2020-09-25 11:20:37,694 INFO L226 Difference]: Without dead ends: 1983 [2020-09-25 11:20:37,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-09-25 11:20:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1823. [2020-09-25 11:20:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-25 11:20:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2294 transitions. [2020-09-25 11:20:37,794 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2294 transitions. Word has length 120 [2020-09-25 11:20:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:37,796 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2294 transitions. [2020-09-25 11:20:37,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2294 transitions. [2020-09-25 11:20:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 11:20:37,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:37,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:37,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:37,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:37,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722232, now seen corresponding path program 1 times [2020-09-25 11:20:37,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:37,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511415266] [2020-09-25 11:20:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 11:20:41,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:41,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-09-25 11:20:41,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 11:20:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:41,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:20:41,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:41,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 11:20:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:20:41,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511415266] [2020-09-25 11:20:41,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:41,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:20:41,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466759557] [2020-09-25 11:20:41,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:41,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:41,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:41,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:41,554 INFO L87 Difference]: Start difference. First operand 1823 states and 2294 transitions. Second operand 7 states. [2020-09-25 11:20:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:44,908 INFO L93 Difference]: Finished difference Result 4085 states and 5182 transitions. [2020-09-25 11:20:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:20:44,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 11:20:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:44,926 INFO L225 Difference]: With dead ends: 4085 [2020-09-25 11:20:44,926 INFO L226 Difference]: Without dead ends: 2279 [2020-09-25 11:20:44,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-09-25 11:20:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2236. [2020-09-25 11:20:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-09-25 11:20:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2774 transitions. [2020-09-25 11:20:45,001 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2774 transitions. Word has length 128 [2020-09-25 11:20:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:45,002 INFO L479 AbstractCegarLoop]: Abstraction has 2236 states and 2774 transitions. [2020-09-25 11:20:45,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2774 transitions. [2020-09-25 11:20:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 11:20:45,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:45,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:45,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:45,006 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:45,007 INFO L82 PathProgramCache]: Analyzing trace with hash 868228625, now seen corresponding path program 1 times [2020-09-25 11:20:45,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:45,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316843622] [2020-09-25 11:20:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 11:20:50,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:50,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:20:50,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 11:20:50,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:20:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 11:20:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 11:20:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 11:20:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:50,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316843622] [2020-09-25 11:20:50,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:50,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:50,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981484233] [2020-09-25 11:20:50,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:50,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:50,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:50,551 INFO L87 Difference]: Start difference. First operand 2236 states and 2774 transitions. Second operand 8 states. [2020-09-25 11:20:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:57,905 INFO L93 Difference]: Finished difference Result 4215 states and 5559 transitions. [2020-09-25 11:20:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:57,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-25 11:20:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:57,928 INFO L225 Difference]: With dead ends: 4215 [2020-09-25 11:20:57,928 INFO L226 Difference]: Without dead ends: 3061 [2020-09-25 11:20:57,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2020-09-25 11:20:58,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 2913. [2020-09-25 11:20:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2913 states. [2020-09-25 11:20:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3598 transitions. [2020-09-25 11:20:58,036 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3598 transitions. Word has length 160 [2020-09-25 11:20:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:58,038 INFO L479 AbstractCegarLoop]: Abstraction has 2913 states and 3598 transitions. [2020-09-25 11:20:58,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3598 transitions. [2020-09-25 11:20:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 11:20:58,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:58,043 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:58,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:58,043 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash 753028932, now seen corresponding path program 1 times [2020-09-25 11:20:58,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:58,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086760946] [2020-09-25 11:20:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:03,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 11:21:03,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:21:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:21:03,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:03,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:03,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:21:03,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:21:03,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 11:21:03,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:21:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:03,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:03,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:21:03,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:21:03,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:03,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:21:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:21:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:21:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:03,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:21:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:21:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 11:21:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:03,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:21:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:21:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:21:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 11:21:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:04,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:04,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:21:04,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:21:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-09-25 11:21:04,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:04,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:21:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:21:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:21:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:21:04,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086760946] [2020-09-25 11:21:04,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:21:04,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:21:04,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5184320] [2020-09-25 11:21:04,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:21:04,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:21:04,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:21:04,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:21:04,831 INFO L87 Difference]: Start difference. First operand 2913 states and 3598 transitions. Second operand 11 states.